VERTICAL INTEGRATION From raw materials to your shelf - Maska s standards are applied throughout the entire process.

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2 FOUNDRY VERTICAL INTEGRATION From raw materials to your shelf Maska s standards are applied throughout the entire process. Maskaowned Laforo foundry located in our backyard. Rigourous control of ductile & cast iron molecular structure. HEAD OFFICE Manufacturing Facilities: Stateoftheart technology at work complete with uniquelydesigned robotic cells, and the latest in equipment for calibrating, machining & balancing our various products. D.C. CURRENTLY UNDER EPANSION 3% larger in Spring DISTRIBUTION CENTER Distribution Center where Maska products are packaged for shipment to more than countries around the world.

3 NEW PRODUCTS EPANDING OUR PRODUCT LINE JAWTYPE COUPLINGS Most economical & commonly used coupling for a wide variety of applications and INSERT ELEMENTS in NBR (rubber) Urethane Hytrel Bronze pages 5659 VP SERIES in the Adjustable Pitch product family pages 5 QD WELDON HUBS for applications that require secure mounting to the shaft page 9 L PITCH TIMING PULLEYS & BELTS as complements to our L & H Pitch Series page 7 T HUBS & BUSHINGS for Conveyor Pulleys pages BE SURE TO SPECIFY 3

4 Visit our Transactional Web Site ECommerce Electronic Catalog Drive Selection Program. ECOMMERCE Stock Availability Order Status Place Orders Account Services Placing orders online is as easy as strolling through our central warehouse with a shopping cart... and if you are also using our Drive Selection Program, with one of our engineers to guide you. ORDERING ONLINE ARE YOU UNSURE HOW TO PROCEED? SEEMS TOO COMPLICATED? For detailed StepbyStep instructions, ask for a copy of our Instruction Booklet or download a copy from our homepage. Our mascot EZPro will guide you through the steps!. Electronic Catalog You can access: our Complete Product line Cross References to other manufacturer s part numbers Technical Specifications Forms Search by keywords, Maska product number or cross references Drive Selection Program Build your own Drive Selection directly on our BB site. OEM: Welcome to a world where complicated formulas and engineering tables are a thing of the past when it comes to selecting the right sheaves and belts for your specific applications! DISTRIBUTORS: It isn t always easy helping customers determine their requirements for PT components. Now selecting the right parts has never been easier! New Features: Direct access to Maska catalog (.pdf format) Improved accuracy, quicker, easier & cross references Print it, fax it, or the results with just one CLICK FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

5 Cert. 76./ Alphabetical Index Page BALANCING STANDARDS... 3 BELTS Belt Tensioning Instructions BUSHINGS QD Bushings Mounting & Proper Wrench Torque... 8 TaperLock Bushings... 3 Vecobloc SCL Keyless Bushings... 5 QD Weldon Hubs... 9 T Hubs & Bushings... COMPLEMENTARY PRODUCTS & INFORMATION COMPUTER SOLUTIONS... COUPLINGS Elastomerictype Jawtype CROSS REFERENCE LISTING DISPLAY... 5 SALES TERMS AND CONDITIONS SHEAVES Nomenclature Chart... 3 A/B Combination Section Adjustable Light Duty (H.V.A.C.) MVL... Adjustable Pitch, 8 Series, VP Series, MVS C Section D Section Fractional Fixed Bore (F.H.P.) MFAL... Light Duty Bush Type MAL & MBL... Light Duty Fixed Bore MA & MB V Section... 5V Section V Section... 5 Step Pulleys MAS... 7 SYNCHRONOUS DRIVES Nomenclature Chart... 6 HTD Sprockets Timing Pulleys WARNING When using ARAMID FIBER REINFORCED BELTS be sure NOT to tension at higher force than recommended for standard conventional construction belts. Higher tension may result in body injury and premature failure of bearings and other drive components. Specially designed sheaves may be required to match drive specification when using this type of belts. NOTE: All dimensions are subject to change without prior notice BE SURE TO SPECIFY 5

6 SPECIAL QUOTE Photocopy and fax this page to: Part #. Quantity 3. Target Price $ If the item is NOT a standard product, please fill out the rest of this form.. O.D. (Outside Diameter) 5. Number of Grooves 6. What type of Vbelt /3 3/8 5/8 / (Please circle) A/L B/5L 3V 5V C 8V D E 7. Shaft Diameter Bored to Size Bushed 8. Driver H.P. Electric Combustion 9. Driver R.P.M.. Application / Load Type Uniform Light Shock Medium Heavy. Service Type Intermittent (36 hours daily) Normal (8 hours daily) Heavy (6 hours daily). Balancing required Yes No If yes: Single Plane or Two Plane or Both 6 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

7 DISPLAY UNIT FLOOR MODEL # LIGHT DUTY SHEAVES & BUSHINGS TOP 7 7 SIDE : Fixed bore sheaves A Belt Size/Qty List Price Extension 5/8 MA = $9.9 MA 5 = MA 3 = MA 35 = MA = MA 5 = MA 5 = TOTAL UNIT TOTAL: $68.56 HEIGHT 8 BOTTOM NET PRICING Display stand only: $5. Display stand (bought with the assortment): $75. SIDE : Fixed bore sheaves B Belt Size/Qty List Price Extension 5/8 MB (3/)= 6.5 $67.5 MB 5 = MB 3 = MB 35 = MB = MB 5 = MB TOTAL UNIT TOTAL: $75.58 SIDE 3: Bush Type Sheaves AB Belts Qty List Price Extension MBL 3.68 $3.36 MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL MBL TOTAL: $9.36 SIDE : Bushings Qty List Price Extension L 9. $8. L 5/ L 3/ L L L / L / L 3/ L 3/ TOTAL: $6. TOTAL RETAIL PRICE OF MODEL #: $,7.5 BE SURE TO SPECIFY 7

8 QD INTERCHANGEABLE BUSHING Check these high quality features... TAPERED, PRECISION FIT. Precision machining of the tapered bore in the hub of the QD rim and the tapered mating surface of the bushing insures a snug, precision fit between rim and bushing. Tightening the cap screws draws the sheave up tight on the bushing Maska QD Bushings and Sheaves are true running. FULL NOT PARTIAL SPLIT. This feature, together with the tapered, precision fit of rim and bushing, enables the QD Bushing to compress evenly around the entire circumference of the shaft, gripping it with tremendous pressure, the equivalent of a press fit on the shaft. And the full split makes it just as easy to install QD Sheaves on all standard size shafts as it is to install them on shafts which may be slightly oversized or slightly undersized. Ductileor Gray EASY TO INSTALL, EASY TO REMOVE. To install Maska QD Sheaves, the cap screws are used as pullwrench only no additional leverage is necessary. To remove QD Sheaves, the cap screws are taken out and used as jack screws. A few quick turns on each screw, and the tight grip of the bushing on the shaft is easily broken. SET SCREW OVER THE KEY. Once the correct position of the QD Sheave on the shaft is determined, tightening the set screw in the bushing head down on the key will hold the bushing in this position while the pullup bolts are tightened. This set screw holds the key in place on the shaft during drive operation an especially desirable feature on drives that have vertical shafts. Available on all QD bushings except W AND S. FULLY INTERCHANGEABLE WITH OTHER QD BUSHINGS. As in the case of Maska QD Sheaves, the QD Bushings also conform to standardized QD dimensions and sheave types. Because of this feature, any QD Stock Bushing may be interchanged with the same size bushing that other QD manufacturers produce. QD BUSHING DIMENSIONS Bushing Bushings Bushing Bushing L JA to J M to W S Inclusive Inclusive TAPER 3/ PER FT ON DIAMETER B Dimensions, Inches Hex Bolt Bore Range Bush List Bolt Cap Screws Set ing Price Circle Required ScrewWeight A B D E F G H L M NC Grade 5 Dimensions MIN MA Pounds L(*) 9. /3 5/8 9/3 3/6 3/3 /3 =/ UNC x / 3/8.7 JA(*).9 5/6 3/8 /6 5/8 3/6 9/6 /3 3= UNC x / /. SH(*).9 3/8 /6 3/ / /8 / / 3=/ 3/8 / UNC x / /6.9 SDS(*) 7.3 7/6 3/6 3 3/6 3/ / /8 5/6 /6 3=/ 3/8 / UNC x /.3 SD(*).8 7/6 3/6 3 3/6 3/8 / / /8 3/6 /6 3=/ / UNC x /.6 SK(*) 6.8 3/6 3 3/8 / 5/6 3/6 3 5/6 3=5/6 / UNC x / 5/8.7 SF(*) /8 5/8 / 5/6 /6 3 3=3/8 5/68 UNC x 3/8 5/6 3.9 E(*) 69. 3/ 3 7/3 6 5/8 5/6 /6 5/8 5 3= 3/ 3/86 UNC x 3/ F(*) 8. 3/6 7/6 6 5/8 3/6 3/3 3/3 3 5/8 5 5/8 3=9/63 5/8 3/86 UNC x 3/8 3.3 J(*) /3 7 / 3 3 3/6 3/3 3/3 6 / 3=5/8 3/86 UNC x 3/8 7/6.8 M(*) 3. / /6 3/3 3/3 6 3/ 7 =3/7 3/86 UNC x N(*) /8 6 / 9/6 3/6 8 /8 8 =8 3 UNC x 5/8 3/ 6 6. P(*) 8. 3/ 8 / 3/ 7 5/8 7 / 5/8 / 9 3/8 =9 5/8 UNC x / 5/ W 8. 7/ /8 9 5/8 / 3/8 3/ = /8 None / S / /8 7 3/ 3/6 /8 5 3/ 5 5= /5 None Refer to page 8 for cap screw torque ratings. * Standard with set screw over keyway. Note: weight in lbs. for an average size bore. QD bushings is a registred trademark and manufactured by Maska under license. 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

9 QD BUSHINGS BORE AND KEYSEAT DIMENSIONS Tapered Bushings are available from stock in all bores and keyseats listed below. In some cases, as the bore increases in diameter, a shallow keyseat is provided due to insufficient metal thickness. When this happens, Maska furnishes the correct rectangular key (inches only) at no charge. This does not affect the bushing s ability to transmit the load. The rectangular key, or flat key as some call it, fits into the standard keyway in the shaft. STANDARD STOCK BORES (INCHES) Bushing Stock Bore Keyseat Bushing Stock Bore Keyseat Bushing Stock Bore Keyseat 3/87/6 No K.S. 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 L 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x /6** 7/6 3/8 x /6** 3/8 x 3/6** 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 JA 5/6 / x /8 /6 /8 3/6 / x /6** / / x /3** 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 SH 5/6 3/8 5/6 x 5/3 7/6 3/8 x /8** 9/6 5/8 3/8 x /6** /6 No K.S. 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 SDS 7/6 9/6 5/8 3/8 x 3/6 /6 3/ 3/8 x /8** 3/6 x /8** 5/6 x /6** No K.S. 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 SD 7/6 9/6 5/8 3/8 x 3/6 /6 3/ 3/8 x /8** 3/6 x /8** 5/6 x /6** No K.S. 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 SK 7/6 9/6 5/8 3/8 x 3/6 /6 3/ 3/8 x 3/6 3/6 5/6 /6 x / /8 x / 3/6 / x /8** /KW5/8* 5/6 3/8 5/8 x /8** 7/6 5/8 x /6** 9/6 5/8 No K.S. Note: All are stocked without keyseat Note: Bushings L, JA, SH, SDS, SD, SK, SF & E manufactured STANDARD STOCK BORES (MILLIMETERS) in ductile iron Bushing Stock Bore Key Bushing Stock Bore Key Bushing Stock Bore Key x 5 L x x 7 3 x 8 35 (38) 6** x 5 JA x x 6 ** 8 8 x 5 ** x x 6 SH x x 8 38 x 7** No K.S x x 6 SDS x x 8 x x x 6 SD x x 8 x 8 Additional bore sizes available upon request. 9/6 /8 x /6 5/8/63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/8 x 3/6 3/ 3/8 x 3/6 SF 3/6 5/6 /6 x / /8 3/6 / x / /KW5/8* 5/8 x 5/6 5/6 3/8 7/6 5/8 x 3/6** 9/6 5/8 /6 3/ 5/8 x /6** 3/6 3/ x /6** 5/6 3/ x /3** 3/6 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/8 x 3/6 3/ 3/8 x 3/6 3/6 5/6 /6 x / /8 3/6 / x / E /KW5/8* 5/6 3/8 7/6 5/8 x 5/6 9/6 5/8 /6 3/ 5/8 x 5/6 3/6 3/ x 3/8 5/633 /6 3/ x/8** 3 /83 3/63 / 3/ x/8** 3 5/63 3/83 7/6 x /6** 3 x /6** /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/8 x 3/6 3/ 3/8 x 3/6 3/6 5/6 /6 x / /8 3/6 / x / /KW5/8* 5/6 3/8 7/6 5/8 x 5/6 9/6 5/8 5/8 x 5/6 F /6 3/ 5/8 x 5/6 3/6 5/633 /6 3/ x 3/8 3 /83 3/63 / 3/ x 3/8 3 5/63 3/83 7/63 3 9/6 x 3/6** 3 5/83 /63 3/ x 3/6** 3 3/63 3 5/6 x /8** No K.S. 7/6 9/6 5/8 /6 3/8 x 3/6 3/ 3/8 x 3/6 3/6 5/6 x / /8 3/6 / x / 5/6 3/8 7/6 9/6 5/8 x 5/6 5/8 /6 3/ 5/8 x 5/6 J 3/6 5/633 /63 /8 3/ x 3/8 3 3/63 / 3/ x 3/8 3 5/63 3/83 7/63 x 7/6 3 5/83 /63 3/ x 7/6 3 3/6 x 3 3 5/6 x 3/8** /8 3/6 / x /8** 3/8 7/6 x /8** x x x x 8 SK x x x 6 8 x 9** x x 8 SF x x x x x 8 x x 9 E 55 6 x x 7 75 x 8 x x x F x 7 75 x 8 85 x x /8 3/6 / x / 3/8 7/6 5/8 5/8 x 5/6 /6 3/ 5/8 x 5/6 3/6 5/63 3/ x 3/8 3 /83 3/63 / 3/ x 3/8 3 3/83 7/63 x 7/6 M 3 5/83 /63 3/ x 7/6 3 3/63 3 5/6 /8 3/6 x / 5/6 3/8 7/6 x 5/8 /6 3/ / x 5/8 5/655 /85 3/6 / x /** 5 /5 3/85 7/65 / x /** 3/ 5/8 x 5/6 ( 5/6)(3)3 / 3/ x 3/8 3 5/63 3/83 7/63 (35/8) x 7/6 3 3/ x 7/ /6 3/6 /8 / x N 3/8 7/6 x 9/6 5/8 /6 3/ / x 5/8 5/65 / x 5/8 5 /8(5 3/6)5 /5 5/65 3/8 / x /** 5 7/65 / x /** 5 x /** 5 5/66 x /8** 5/6(3 /) 3/ x 3/8 3 3/83 7/6(3 )(3 5/8)(3 3/) x 7/6 (3 )3 5/6( /)( 3/8) x 7/6 x P ( 5/8)( /6)( 3/)( ) / x 5/8 5/655 /8(5 3/6)5 /5 5/6 / x 5/8 5 3/85 7/65 / x 5/8 5 3/5 5 5/666 /6 x /** (6 /)(6 7/6)6 x /** (6 3/)6 5/67 3/ x /8** 7/6 x 3/ / x 5/8 W 5 5/66 /6 7/6 x 3/ 6 x 3/ 6 3/77 /7 3/ x S S5RB S7RB Stocked in rough bore sizes; can be rebored from 5 to max. NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves * Bushings with wide keyway will be shipped unless the 5/8 wide keyway is specified when ordering. ** Shallow keyseat (in ductile) ( ) = Contact Maska for availability 5 x x x J 7 75 x 8 85 x x 8 x 6 () 8 x 5** (5) 8 x.9** 9 5 x M 8 x x x N 8 x 6 3 x x 8 P (5) 36 x Note: In metric bores, key not supplied for shallow keyway. The metric system does not refer to keyseat or keyway dimensions as does the English system; instead, dimensions are given for the key itself, which is rectangular in shape and not square as in the English system. This meets ISO standards, except nominal diameters over 3 up to 6 included (metric bore). BE SURE TO SPECIFY 9

10 QD BUSHING MOUNTING AND PROPER WRENCH TORQUE STANDARD MOUNT EITHER WAY REVERSE MOUNTING BUSHING FLANGE TOWARD MACHINE OR MOTOR. Align tapped holes in bushing flange with drilled holes in sheave hub.. Insert capscrews through drilled holes in sheave hub and thread loosely into tapped holes in bushing flange. 3. Position assembly on shaft and tighten capscrews progressively and uniformly. BUSHING FLANGE AWAY FROM MACHINE OR MOTOR. Align drilled holes in bushing flange with tapped holes in sheave hub.. Insert capscrews through drilled holes in bushing flange and thread loosely into tapped holes in sheave hub. 3. Position assembly on shaft and tighten capscrews progressively and uniformly. TO REMOVE. Remove capscrews and thread into tapped holes in sheave hub. Tighten progressively until bushing is free from sheave taper.. Remove assembly from shaft. CAPSCREWS ARE ALWAYS ACCESSIBLE FROM THE OUTSIDE. TO REMOVE. Remove capscrews and thread into tapped holes in bushing flange. Tighten progressively until bushing is free from sheave taper.. Remove assembly from shaft. WARNING DRY MOUNTING DO NOT USE LUBRICANTS OR ANTI SEIZE COMPOUNDS ON TAPERED BORE OR BUSHING SUITCASE. TIGHTENING IMTANT Tighten screws evenly and progressively. Never allow the sheave to be drawn in contact with the flange of the bushing. If extreme screw tightening forces are applied, excess pressures will be created in the hub of the mounted sheave which may cause it to crack. QD BUSHINGS SET SCREW TIGHTENING TORQUES AND AIAL LOADS PROPER WRENCH TORQUE TO TIGHTEN SCREWS OPEN END OR SOCKET WRENCH BUSHING SCREW TORQUE TORQUE No SIZE WRENCH CAPACITY Inches LENGTH FtLbs Inches PULL(LBS) InLbs L / 6 8, JA # 5 5, SH / 9 7 3,5 SDSSD / 9 7 5, SK 5/ , SF 3/ , E 6 6, F 9/ , J 5/ , M 3/ , N 3 5 5, P , W / , S / , RECOMMENDED SET SCREW AIAL LOAD ( 3%) SET SCREW SOCKET/ALLEN KEY TIGHTNING TORQUE CUP POINT KNURLED POINT SIZE SIZE (ACROSS FLAT) NEWTONMETRE LBFINCHES NEWTONS LBF NEWTONS LBF (Nm) (N) (N) # 3/ / / /6 8 5/ /8 6 3/ / /8 5/ Note: For axial loads in excess of the values listed, a shouldered shaft against the face of the inner ring is recommended. FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

11 QD WELDON HUBS MASKA QD Weldon hubs for many applications, such as conveyor drum pulleys, fan rotors, steel plate sprockets, impellers, etc. Maska QD weldon hubs are made of low carbon steel for its excellent welding properties, and are compatible with all standard QD bushings, with the exception of L, SD. Type Type Hub No. List Price ($) Fits Bushing Type Dimensions Inches D* L B P L BC Bore Range Weight HJA HSH HSDS HSK JA SH SDS SK /3 / /6 3 5/6 to / to /6 to to 5/8.. 3 HSF HE HF HJ SF E F J /8 6 / to 5/6 to 3 to 7/6 to HM HN HP HW M N P W / to 5 3/ to 6 5/6 to 7 / to Mounting Type : Standard and Reverse mount * Tolerance: HJA thru HJ = (+. /. ) Type : Standard mount only HM thru HW = (+. /.3 ) BE SURE TO SPECIFY

12 T HUBS & BUSHINGS FOR CONVEYOR PULLEYS Maska T Hubs and Bushings are specially designed for conveyor pulley applications. The /ft. taper provides all the power required for conveyor pulleys while permitting easier installation and removal than other bushing types. Bushings are made of ductile iron in many sizes and hubs are made of low carbon steel, known for its excellent welding properties. TH5 TO TH8 TH TH Section AA INCLUSIVE Taper per ft. on Diameter B T HUBS Hub No. List Price $ Bushing Dimensions Inches Tapped Holes Weight D* L B P L BC No. Size TH5 TH TH5 TH TB5 TB TB5 TB /8 3/6 /8 / /6 9/6 3/6 7/6 3 3/6 3 3/ 9/6 /NC 5/68NC 3/86NC 7/6NC TH35 TH TH5 TH TB35 TB TB5 TB / / /6 / 3/ 5 7/6 6 / /6 3NC 9/6NC 5/8NC 3/NC TH6 TH7 TH8 TH TH TB6 TB7 TB8 TB TB / 3 /8 3 7/6 /8 3/ /6 3/6 7/ /6 5 9/6 8 3/ NC 8NC /87NC /87NC /87NC * Tolerance: (+. /.5 ) FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

13 T HUBS & BUSHINGS FOR CONVEYOR PULLEYS T Bushing Dimensions Hub No. List Price $ Dimensions Inches A B D L BC No. Size Recommended Wrench Torque (ftlbs) Weight TB5 TB TB5 TB /8 5/3 5/8 / / 7/6 5 5/6 /8 3/3 /6 7/6 3 3/6 3 3/ 9/6 /NC x 5/68NC x / 3/86NC x 3/ 7/6NC x TB35 TB TB5 TB /3 5/ /6 7 /8 8 /8 5/3 3/6 3 5/6 3 3/ 5 7/6 6 / /6 3NC x 3/ 9/6NC x 5/8NC x / 3/NC x TB6 TB7 TB8 TB TB /8 5/6 3/8 9/6 3/ Standard Stock Bores 5/6 3 5/6 5 5/8 7 5/6 5/8 Bushing Stock Bore Keyseat TB5 TB TB5 TB3 TB35 TB TB5 5/8 3/ /8 3/6 / 7/6 3/ 3/6 / 7/6 /6 5/6 3/6 / 7/6 /6 5/6 3/6 7/6 7/6 5/6 3/6 7/6 /6 5/6 5/6 3/6 7/6 /6 5/6 3 7/6 7/6 5/6 3 7/6 3 5/6 3 7/6 3 5/6 7/6 3/6 x 3/3 / x /8 3/8 x /8** 3/6 x 3/3 / x /8 3/8 x 3/6 x 3/6** / x /8 3/8 x 3/6 x / 5/8 x /8** 3/8 x 3/6 x / 5/8 x 5/6 3/ x 3/6** x / 5/8 x 5/6 3/ x 3/8 x 5/6** 5/8 x 5/6 3/ x 3/8 x 7/6 x 3/8** x 7/6 x x 3/8** /8 /6 5 /8 6 3/6 7 /6 9 9/6 5 9/6 8 3/ NC x 8NC x 3 /87NC x 3 /87NC x 3 /87NC x 3 Maintenance Tip: For the first month of operation, inspect bushings and capscrews for proper seating at least once a week and thereafter during periodic shut down. TB5 TO TB8 INCLUSIVE TB TB5 TB6 TB7 TB8 TB 3 5/6 7/6 5/6 5 7/ / / / / /6 9 x / x 5/8 / x 5/8 x 3/ x 3/ 3/ x 3/ 3/ x 3/ x 3/ x 3/ x TB **Key provided with these sizes only. TB5TB6 made from ductile iron. TB7TB made from gray cast iron. x 3 x TB SECTION AA Taper per ft. on diameter B BE SURE TO SPECIFY 3

14 TAPERLOCK BUSHINGS To Install:. Clean all parts of the bushing and bore of hub thus removing any oil, lacquer or dirt. Install bushing in hub and match half holes to make complete holes (each complete hole will be threaded on one side only).. Oil thread and either the end of set screws or under the head of the cap screws. Install screws loosely in holes that are threaded on the hub side. 3. Make sure that the bushing is free in the hub. Slip assembly onto shaft and align in the desired position.. Tighten screws evenly and alternately until the part has tightened. (See table on following page for wrench torque) 5. Hammer with a block or sleeve the large end of the bushing. Retighten screws using the correct torque. Repeat this procedure until the screws no longer turn. Fill remaining holes with grease to prevent dirt buildup. WARNING: DRY MOUNTING DO NOT USE LUBRICANTS OR ANTISEIZE COMPOUND. To Remove:. Remove all screws. Oil thread and either the end of set screws or under the head of cap screws.. Insert screws in hole(s) that are threaded on the bushing side (see diagram on following page). Note that there will be one extra screw left over. 3. Tighten screws alternately until the bushing is loose in the hub. It may be necessary to tap on the hub to loosen the bushing. STANDARD STOCK BORES (INCHES) BUSHING PRICE STOCK BORE KEYSEAT BUSHING PRICE STOCK BORE KEYSEAT 8.6 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 / x /6* 8. 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 / x /8 /6 /8 / x /6*.8 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 3/3 5/6 /6 /8 3/6 / / x /8 5. 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 3. 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 3/8 x / /6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 3/8 x 3/6 9/6 5/8 /6 3/8 x /8* /6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 x 3/8 x 3/6 9/6 5/8 /6 3/8 x /8*. 9/6 /8 x /6 5/8 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/ 3/8 x 3/6 3/6 x / 5/6 x 3/6* /8 x /8* 57.6 /8 x /6 5/8 /6 3/ 3/6 3/6 3/3 5/6 /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/ 3/8 x 3/6 3/6 5/6 /6 /8 3/6 / x / 5/6 3/8 7/6 5/8 x 3/6* 5/8 /6 5/8 x 3/6* x x 6 () 8 x 7 8 () x (5) 6 5 x x x 7 (5) 6 5 x x x 7 (3) x 8 (5) 6 5 x x x 7 3 x x x x x x x x x 8 x 8 (65) x x x x x 8 39 x 8 x 7* 6 5 x x x x 8 x x x x x x 8 x x x x (55) 9 6 x x x 8 39 x x x 6 8 x x x 8 x x x x 7 75 x / 3/6 x 3/3 /8 3/6 / / x /8 3/8 5/6 x 5/3 7/6 5/8 /6 3/ 3/8 x 3/6 3/6 5/6 /8 3/6 / x / 5/6 3/8 7/6 5/8 x 3/6* /6 x 3/3 5/6 /8 3/6 / / x /8 5/6 3/8 5/6 x 5/3 7/6 9/6 5/8 /6 3/ 3/8 x 3/6 3/6 5/6 /6 /8 3/6 / x / 5/6 3/8 7/6 5/8 /6 3/ 5/8 x 5/6 3/6 5/6 3 3/ x /* 3 /8 3 3/6 3 / 3/ x /* /6 /8 3/6 / / x /8 5/6 3/8 5/6 x 3/3 7/6 9/6 5/8 /6 3/ 3/8 x 3/6 3/6 5/6 /6 /8 x / 3/6 / x / 5/6 3/8 7/6 5/8 /6 3/ 5/8 x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x /* /6 / / x /8 3/8 5/6 x 5/3 7/6 5/8 /6 3/ 3/8 x 3/6 5/6 /8 3/6 / x / 3/8 7/6 5/8 /6 3/ 5/8 x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3/8 3 5/6 3 3/8 3 7/ /8 3 /6 3 3/ x /* 3 3 5/6 x /*. 7/6 5/8 /6 3/ 3/8 x 3/6 5/6 /8 3/6 / x / 3/8 7/6 5/8 /6 3/ 5/8 x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3/8 3 3/8 3 7/ /8 x 7/6 3 /6 3 3/ x /* 3 3 5/6 /8 3/6 / 3/8 7/6 x /* /6 3/6 x / 3/8 7/6 5/8 3/ 5/8 x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3/8 3 3/8 3 7/ /8 3 3/ x 7/ /6 /8 3/6 / x 3/8 7/6 x /* 3/ 5/6 / x /* /6 /6 5/8 x 5/6 5/6 3/ x 3/8 3 3/8 3 7/6 3 5/8 x 7/ /6 / 3/8 7/6 x 5/6 5 / x 7/6* STANDARD STOCK BORES (MILLIMETERS) STOCK BORE KEY STOCK BORE KEY STOCK BORE KEY STOCK BORE KEY STOCK BORE KEY All bore sizes are stocked without a keyseat. A standard keyseat /8 /6 is available upon request. (33) 6 x x x 8 39 x x x x 7 75 x (3535) x 8 x x x x 7 75 x 8 85 x 9 5 x () 8 x x x 7 75 x 8 85 x x 8 x 6 (55) 55 6 x x 7 75 x 8 85 x x 5 8 x x 8 (55) 55 6 x x 7 75 x 8 85 x x 8 x x 8 * Shallow keyseat ( ) Contact Maska for availability FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

15 TAPERLOCK BUSHINGS C DIMENSIONS FOR 8 THRU 55 TAPERLOCK BUSHINGS Rating HUB DIAM. REF. Installation Screw + G L * M * Bush No. Torque A B C D Qty Size Std Hex Short Std Short Capacity Key Key Hex Key Wt. (lb in.) Gray Iron Key (lbs) 8, 3/8 3/6 /6 / x /8 5/8 / 3/. 8,3 5/6 9/6 / x /8 5/8 / 3/. 3,6 3 / 3/ 3/8 x 5/8 3/8 3/6 5/8 / ,55 3/ 3/8 x 5/8 3/8 3/6 5/8 / ,85 3 3/8 3/8 x 5/8 3/8 3/6 5/8 /6.6 6,3 / 3 5/8 /8 3/8 x 5/8 3/8 3/6 5/8 /6.7 65,3 / 3 / /8 3/8 x 5/8 3/8 3/6 5/8 /6. 7,5 3/ / 3/8 5/8 7/6 x 9/6 5/6 3/8. 57,6 3 3/8 3/ 3 / x 5/8 / 5/ ,3 3 3/8 3 / x 5/8 / 5/ , / 6 / 5/8 x / 3/6 3/6 /6 / , / 3 5 3/ 5/8 x / 3/6 3/6 /6 / , /3 3 x 39 5/6 3 3/8 / ,3 5 3/ /6 3 5/8 x 3/ 3/8 5/8 /8 3 3/ , 6 3/8 9 6 /8 3 3/ x 5/8 5/6 3/ / , /3 3 x / 37 3/6 5/6 5 / 3/ Use in position shown in drawing above for tighening bushing on shaft. When loosening bushing, remove screws and use all except one in the other holes. * Space required to remove bushing using jackscrews no puller required. Standard hex key cut to minimum useable length. Peak torque loads must not exceed torque capacity rating shown. Capacity values shown are for light starting and steady running conditions. For more severe duty, divide torque capacity by service factor suggested in table below at right. Note: weight in lbs. for an average size bore. RECOMMENDED WRENCH TORQUE WRENCH TORQUE WRENCH TORQUE BUSHING NO. SCREWS (PoundsInches) (PoundsFeet) 8, 8 / Set Screws 55.5, 5, 3 3/8 Set Screws , 65 3/8 Set Screws /6 Set Screws , 55 Set Screws , 33 5/8 Set Screws Cap Screws, 83. 5/8 Cap Screws, / Cap Screws,5. 55 Cap Screws 3, , 76, 865 / Cap Screws 7, , Cap Screws 3,7,. SERVICE FACTOR Service Factor Type of Loading. Light Starting & steady running.5 Light starting & uneven running Fairly heavy starting & steady or uneven running Light or heavy starting & moderate shock running Light or heavy starting & severe shock running, or reversing loads BE SURE TO SPECIFY 5

16 VECOBLOC SCL KEYLESS BUSHING ADVANTAGES Manufactured from steel and machined with precision, the Vecobloc bushing allows for installation of the component on the shaft without a key. This means cost savings as the keyway does not have to be machined on the shaft. Makes synchronisation, indexing and axial positioning easier. This product is manufactured in cooperation with Colmant Cuvelier DIMENSIONS Dimensions, inches Installation Screw Bore Range Vecobloc inches (mm) Weight No. (Bolt Circle) Socket Head Cap Screw Torque D E L A Qty. Size** Wrench (lbin) Min. Max. (lbs) 8VC VC 6VC VC 57VC *3VC *3535VC M3x.5 mm Mx.7 5mm M6x 5mm M6x x 3mm M8x.5 5mm Mx.75 5mm Mx 85mm () () () (9) () (38) 3/6 (5) 5/6 () /8 (5) 3/8 (35) /6 () /8 (5) (6) (7) * Contact Maska for price and lead time. ** Metric screws and lockwashers are provided with all Vecobloc bushings. NOTE: weight given in lbs. for an average size bore. STANDARD STOCK BORES List Part No Stock Bore (inches) Stock Bore (mm) Price ($) 8VC 5. 9/6 5/8 /6 3/ 3/6 5/6* VC 6. 9/6 5/8 /6 3/ 3/6 5/6 /6 /8* 6VC 8.5 9/6 5/8 /6 3/ 3/6 5/6 /6 /8 3/6 / 5/6 3/8 VC 5. 9/6 5/8 /6 3/ 3/6 5/6 /6 /8 3/6 / 5/6 3/8 7/6 9/6 5/8 /6* 57VC /6 5/8 /6 3/ 3/6 5/6 /6 /8 3/6 / 5/6 3/8 7/6 9/6 5/8 /6 3/ 3/6 5/6 /6 /8 3VC 3535VC FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS Only minimum bores are kept in stock; contact Maska for price and delivery.

17 VECOBLOC SCL KEYLESS BUSHING. Front cone (6 holes). Back cone ( holes) 3. Screws & lockwashers 3 To Install: The torque is transmitted by friction. All contact surfaces (cone & bore) must be clean. Do not use lubricants or antiseize compound on tapered bore or bushing suitcase. Install the back cone () on shaft. Install the sheave on the back cone. Install the front cone (). The slots must be aligned. Be careful of proper drive alignment before tightening. Tighten the screws (3) alternately and evenly, in a cross pattern, until you obtain the required tightening torque. Check the alignment. To Remove: Loosen the screws and place two of them in the threaded holes of the front cone (). Tighten these screws alternately to separate the cones. If one cone remains stuck in the sheave, you may gently hammer either the cone or the sheave. Use of a puller may be required. Mounting with a timing pulley Bore Diameter TORQUE CAPACITY (lbsin)* Inches mm 8VC VC 6VC VC 57VC 3VC 3535VC 9/6 5/8 /6 3/ 3/6 5/6 /6 /8 3/6 / 5/6 3/8 7/6 9/6 5/8 /6 3/ 3/6 5/6 /6 /8 3/6 / 5/6 3/8 7/6 9/6 5/8 /6 3/ 3/6 5/ * Peak torque loads must not exceed torque capacity rating shown. Capacity values shown are for light starting and steady running conditions. For more severe duty, divide torque capacity by service factor suggested in the Service Factor chart on page 9. This product is manufactured in cooperation with Colmant BE SURE TO SPECIFY 7

18 LIGHT DUTY FIED BORE, MA (A & 3LL VBELTS) GROOVE D.D. 3L Belts D.D. A (L) Belts O.D. Part No Cross List Price Reference ($) T L Standard Bore Max. Bore App. Wt MA5* MA8* MA MA MA MA3 MA MA5 MA6 MA7 MA8 MA3 MA33 MA35 MA38 MA MA3 MA5 MA8 MA5 MA53 MA55 MA58 MA6 MA63 MA65 MA68 MA7 MA73 MA78 MA8 MA83 MA88 MA9 MA93 MA98 MA MA3 MA8 MA MA3 MA MA3 MA33 MA3 MA53 MA83 AK7 AK AK AK AK3 AK5 AK6 AK7 AK8 AK3 AK3 AK3 AK39 AK AK AK6 AK9 AK5 AK5 AK56 AK59 AK6 AK6 AK66 AK69 AK7 AK7 AK79 AK8 AK89 AK9 AK99 AK AK9 AK AK AK3 AK AK5 AK B B B B B B B B B B B B B B W W W W A A A A A A A A A A A A A A A A A A A A A A A A A A A A A / 3/8 3/8 3/8 3/8 3/8 3/8 / / / / / / / /8 /8 /8 /8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 5/8 5/8 3/ 5/8 3/ 5/8 3/ 5/8 3/ 5/8 3/ 5/8 ( 3/ ) 5/8 3/ /8 5/8 3/ 5/8 3/ 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 /8 /8 /8 /8 /8 /8 /8 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 / / / / / / / / / / / / 7/6 / 7/6 5/8 3/6 7/6 7/6 3/ / 3/ P.D. for A (L) Belts = O.D. P.D. for 3L Belts = D.D.+.5 = O.D..3 *DO NOT use 3L belt with MA5 and MA8 sheaves ( ) = Contact Maska for price and delivery Bore Range 5/8 5/6 / 5/6 3/8 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/8 3/6 NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. ALL PRODUCTS HAVE SET SCREWS Type Type T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOTE: Metric, or additional special bores, are made to order only items. Contact Maska for price and delivery. OR (alternative) for immediate use, Maska suggests using an MAL, MBL, MAL or MBL (see pages ) for a stocked product. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

19 LIGHT DUTY FIED BORE, MA ( A VBELTS) GROOVES D.D. A Belts O.D. Part No Cross List Price Reference ($) T L Standard Bore Max. Bore App. Wt MA MA MA3 MA MA5 MA7 MA8 MA9 MA3 MA33 MA35 MA38 MA MA3 MA5 MA8 MA5 MA53 MA55 MA58 MA6 MA63 MA7 MA73 MA8 MA83 MA9 MA93 MA MA3 MA MA3 MA MA3 MA33 MA3 MA53 MA83 AK AK AK AK3 AK5 AK6 AK7 AK8 AK3 AK3 AK3 AK39 AK AK AK6 AK9 AK5 AK5 AK56 AK59 AK6 AK6 AK B 3B 3B B B B B B B B B B W W W W W W W W W A A A A A A A A A A A A A A A A A /6 /6 /6 /6 /6 /6 /6 5/8 5/8 5/8 9/6 9/6 /6 9/6 9/6 9/6 9/6 9/6 /6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/3 9/3 9/6 9/6 7/3 5/8 3/ 5/8 3/ () 5/8 3/ 5/8 3/ 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 3/ /8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 5/8 /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 /8 3/6 3/ /8 /8 /8 /8 /8 /8 /8 /8 3/6 3/6 3/6 3/6 3/8 3/6 3/6 3/6 5/6 5/6 /6 /6 /6 /6 7/6 7/6 /6 /6 /6 /6 /6 /6 /6 /6 /6 5/6 5/ AK8 AK9 AK AK AK AK3 AK AK5 AK8 P.D. for A Belts = O.D. ( ) = Contact Maska for price and delivery NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/8 5/6 / 5/6 3/8 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/8 3/6 ALL PRODUCTS HAVE SET SCREWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOTE: Metric, or additional special bores, are made to order only items. Contact Maska for price and delivery. OR (alternative) for immediate use, Maska suggests using an MAL, MBL, MAL or MBL (see pages ) for a stocked product. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 9

20 LIGHT DUTY FIED BORE, MB (A(L) & B(5L) VBELTS) GROOVE D.D. A (L) Belts *.5 *.5.65 * D.D. B (5L) Belts O.D. Part No Cross List Price Reference ($) T L Standard Bore Max. Bore App. Wt MB MB3 MB MB5 MB6 MB8 MB3 MB3 MB33 MB3 MB35 MB38 MB MB3 MB5 MB8 MB5 MB53 MB55 MB58 MB6 MB63 MB65 MB68 MB7 MB73 MB75 MB78 MB8 MB83 MB88 MB9 MB93 MB98 MB MB3 MB8 MB MB3 MB8 MB MB8 MB38 MB58 MB88 BK BK5 BK6 BK7 BK8 BK3 BK3 BK3 BK36 BK BK5 BK7 BK5 BK5 BK55 BK57 BK6 BK6 BK65 BK67 BK7 BK7 BK75 BK77 BK8 BK85 BK9 BK95 BK BK5 BK BK5 BK BK3 BK BK6 BK B 6B 6B 5B 5B 6B 6B 6B 6B 6B 6B 6B 6B 6W 6W 5W 5W 6W 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A 5A /35 3/8 3/8 3/8 3/8 3/8 3/8 / / / / 5/6 * 5/8* 3/* 5/8 3/ * 5/8 3/ 5/8 3/ * /8* 5/8 3/ 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/ /8 3/ /8 3/6 5/8 3/ /8 3/6 /8 5/8 3/ /8 5/8 3/ /8 3/ /8 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 5/8 3/ /8 3/6 /8 3/6 / 7/6 5/8 3/ /8 3/6 3/ /8 /8 /8 /8 /8 /8 /8 /8 /8 3/6 3/6 3/6 / / 3/6 / / 5/6 / / / 3/8 3/8 / 3/8 / / 7/6 / 7/6 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/ P.D. for A (L) Belts = Datum Dia = O.D.. P.D. for B (5L) Belts = O.D. *DO NOT use A or L belt with these specifics bores ( ) Contact Maska for price and delivery NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/8 5/6 / 5/6 3/8 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/8 3/6 ALL PRODUCTS HAVE SET SCREWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOTE: Metric, or additional special bores, are made to order only items. Contact Maska for price and delivery. OR (alternative) for immediate use, Maska suggests using an MAL, MBL, MAL or MBL (see pages ) for a stocked product. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

21 LIGHT DUTY FIED BORE, MB (A & B VBELTS) GROOVES D.D. A Belts *.35 *.6 * , , D.D. B Belts O.D. Part No Cross List Price Reference ($) T L Standard Bore Max. Bore App. Wt MB MB3 MB5 MB8 MB3 (MB3) MB33 MB3 MB35 MB38 MB (MB3) MB5 MB8 MB5 MB53 MB55 (MB58) MB6 (MB63) MB65 MB68 MB7 MB78 MB8 MB88 MB9 MB98 MB MB8 MB MB8 MB (MB8) MB38 (MB58) MB88 BK5 BK7 BK8 BK3 BK3 BK3 BK36 BK BK5 BK7 BK5 BK5 BK55 BK57 BK6 BK6 BK65 BK67 BK7 BK8 BK9 BK BK BK BK3 BK BK6 BK B 8B 7B 8B 8B 8B 8B 8B 8B 8B 8B 8W 8W 8W 8W 8W 8W 8W 8W 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A 8A /8 5/6 5/6 5/6 5/6 5/6 /6 3/6 3/6 3/6 /6 3/6 3/6 3/6 3/6 3/6 /6 3/6 3/6 3/6 3/6 3/6 /6 3/6 3/6 3/6 3/6 3/6 /6 3/6 3/6 3/6 3/6 * *5/8 *3/ * 5/8 3/ * 5/8 3/ * * /8 5/8 3/ /8 5/8 3/ /8 ( 5/8 3/ /8) 5/8 3/ /8 5/8 /8 5/8 3/ /8 3/ /8 5/8 3/ /8 ( /8 3/8) 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 (3/ /8 3/8) 5/8 3/ /8 ( /8 3/8) 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/ /8 3/6 3/8 7/6 5/8 3/ /8 3/ /8 3/6 3/8 7/6 5/8 3/ /8 5/8 3/ /8 5/8 3/ /8 3/6 7/6 5/8 3/ /8 / ( 3/6 7/6) 5/8 3/ /8 ( 3/6 7/6) /8 3/6 /8 /8 /8 /8 /8 /8 /8 /8 3/6 / / / / 5/6 5/6 5/6 5/6 /6 /6 /6 /6 /6 /6 /6 /6 /6 /6 /6 /6 /6 / P.D. for A Belts = Datum Dia = O.D.. P.D. for B Belts = O.D. *DO NOT use A belts with these specifics bores ( ) Contact Maska for price and delivery NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/8 5/6 / 5/6 3/8 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/8 3/6 ALL PRODUCTS HAVE SET SCREWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOTE: Metric, or additional special bores, are made to order only items. Contact Maska for price and delivery. OR (alternative) for immediate use, Maska suggests using an MAL, MBL, MAL or MBL (see pages ) for a stocked product. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY

22 LIGHT DUTY BUSH TYPE MAL & MAL (A & 3LL VBELTS) NEW: Warehouse Innovation Colorcoded products for easy stock retrieval on shelves. D.D. GROOVE O.D. DIMENSIONS* (3L) A(L) Part Cross List Wt Belts Belts No Refer. Price Type E F L M (lbs) MAL3 AK3H 9.6 B 3/8 3/ /3 3/ MAL3 AK3H 9.36 B 3/8 3/ /3 3/ MAL3 AK3H 9.6 B 3/3 3/ /3 / MAL37 AK39H.78 B 3/3 3/ /3 / MAL39 AKH.6 B 3/3 3/ /3 / MAL AKH.3 B 3/3 3/ /3 / MAL AK6H.6 B 3/3 3/ /3 / MAL7 AK9H.9 3W 3/3 3/ /3 / MAL9 AK5H. 3W 3/3 3/ /3 / MAL5 AK5H.8 3W 3/3 3/ /3 / MAL5 AK56H.8 3W 3/3 3/ /3 / MAL57 AK59H 3. 5A 3/3 3/ /3 / MAL59 AK6H 3.7 5A 3/3 3/ /3 / MAL6 AK6H.3 5A 3/3 3/ /3 / MAL6 AK66H 5.8 5A 3/3 3/ /3 / MAL67 AK69H 7.8 5A 3/3 3/ /3 / MAL69 AK7H A 3/3 3/ /3 / MAL7 AK7H A 3/3 3/ /3 / MAL77 AK79H A 3/3 3/ /3 / MAL8 AK8H 35. 5A 3/3 3/ /3 / MAL87 AK89H A 3/3 3/ /3 / MAL9 AK9H.96 5A 3/3 3/ /3 / MAL97 AK99H 3.5 5A 3/3 3/ /3 / MAL AKH. 5A 3/3 3/ /3 / MAL7 AK9H A 3/3 3/ /3 / MAL AKH 7.8 5A 3/3 3/ /3 / MAL AKH 5.8 5A 3/3 3/ /3 / MAL3 AK3H 6.8 5A 3/3 3/ /3 / MAL AKH A 3/3 3/ /3 / MAL5 AK5H 7.5 5A 3/3 3/ /3 / MAL8 AK8H 88. 5A 3/3 3/ /3 / GROOVES D.D. O.D. DIMENSIONS* A Part Cross List Wt Belts No Refer. Price Type E F L M (lbs) MAL3 AK3H B 3/8 /3 3/ MAL3 AK3H 37.8 B 3/8 /3 3/ MAL3 AK3H B 3/3 3/8 /3 / MAL37 AK39H B 3/3 3/8 /3 / MAL39 AKH.68 B 3/3 3/8 /3 / MAL AKH.6 B 3/3 3/8 /3 / MAL AK6H 6. W 3/3 3/8 /3 / MAL7 AK9H 7. W 3/3 3/8 /3 / MAL9 AK5H 8. W 3/3 3/8 /3 / MAL5 AK5H 5.5 W 3/3 3/8 /3 / MAL5 AK56H 5. W 3/3 3/8 /3 / MAL57 AK59H A 3/3 3/8 /3 / MAL59 AK6H A 3/3 3/8 /3 / MAL6 AK6H A 3/3 3/8 /3 / MAL7 AK7H A 3/3 3/8 /3 / MAL8 AK8H 69. 6A 3/3 3/8 /3 / MAL9 AK9H A 3/3 3/8 /3 / MAL AKH A 3/3 3/8 /3 / MAL AKH A 3/3 3/8 /3 / MAL AKH 9. 6A 3/3 3/8 /3 / MAL3 AK3H A 3/3 3/8 /3 / MAL AKH.36 6A 3/3 3/8 /3 / MAL5 AK5H.68 6A 3/3 3/8 /3 / MAL8 AK8H 5. 6A 3/3 3/8 /3 / Legend: E, F, L and M : Sheave dimensions vary according to shaft tolerance. MAL Serie use L bushing. With L bushing only reverse mounting is possible, see page 8. Suffix on type indicates construction:a = arm; B = block; W = web. P.D. for A (L) Belts = O.D. P.D. for 3L Belts = D.D.+.5 = O.D..3 * Dimensions to closest fraction FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

23 LIGHT DUTY BUSH TYPE MBL & MBL (AB & L5L VBELTS) NEW: Warehouse Innovation Colorcoded products for easy stock retrieval on shelves. DD GROOVE O.D. DIMENSIONS* A(L) B(5L) Part Cross List Type Wt Belts Belts No Refer. Price E F L M (lbs) MBL3 BK3H.68 B 7/3 9/3 /3 63/ MBL33 BK3H 3.6 B 7/3 9/3 /3 63/ MBL35 BK3H 3. B 7/3 9/3 /3 63/ MBL37 BK36H 3.8 B 3/3 9/3 /3 7/ MBL39 BKH 3.3 B 3/3 9/3 /3 7/ MBL BK5H 3.8 B 3/3 9/3 /3 7/ MBL BK7H.36 B 3/3 9/3 /3 7/ MBL7 BK5H.9 3W 3/3 9/3 /3 7/ MBL9 BK5H 5. 3W 3/3 9/3 /3 7/ MBL5 BK55H W 3/3 9/3 /3 7/ MBL5 BK57H 6.6 3W 3/3 9/3 /3 7/ MBL57 BK6H A 3/3 9/3 /3 7/ MBL59 BK6H 8. 5A 3/3 9/3 /3 7/ MBL6 BK65H 3.8 5A 3/3 9/3 /3 7/ MBL6 BK67H A 3/3 9/3 /3 7/ MBL67 BK7H 3. 5A 3/3 9/3 /3 7/ MBL69 BK7H A 3/3 9/3 /3 7/ MBL7 BK75H 3.9 5A 3/3 9/3 /3 7/ MBL7 BK77H A 3/3 9/3 /3 7/ MBL77 BK8H A 3/3 9/3 /3 7/ MBL8 BK85H A 3/3 9/3 /3 7/ MBL87 BK9H.8 5A 3/3 9/3 /3 7/ MBL9 BK95H A 3/3 9/3 /3 7/ MBL97 BKH 7. 5A 3/3 9/3 /3 7/ MBL BK5H A 3/3 9/3 /3 7/ MBL7 BKH 5.6 5A 3/3 9/3 /3 7/ MBL BK5H A 3/3 9/3 /3 7/ MBL7 BKH A 3/3 9/3 /3 7/ MBL7 BK3H A 3/3 9/3 /3 7/ MBL37 BKH 7.6 5A 3/3 9/3 /3 7/ MBL7 BK5H A 3/3 9/3 /3 7/ MBL57 BK6H A 3/3 9/3 /3 7/ MBL87 BK9H.5 5A 3/3 9/3 /3 7/3.5 Legend: E, F, L and M : Sheave dimensions vary according to shaft tolerance. MBL Serie use L bushing. With L bushing only reverse mounting is possible, see page 8. Suffix on type indicates construction: A = arm; B = block; W = web. DD GROOVES O.D. DIMENSIONS* A B Part Cross List Type Wt Belts Belts No Refer. Price E F L M (lbs) MBL33 BK3H B 3/8 3/ /3 3/ MBL35 BK3H 39.8 B 3/8 3/ /3 3/ MBL37 BK36H.6 B 3/8 3/ /3 3/ MBL39 BKH. B 5/6 3/ /3 7/ MBL BK5H.8 B 5/6 3/ /3 7/ MBL BK7H 6.36 B 5/6 3/ /3 7/ MBL7 BK5H 7. W 3/3 3/ /3 5/ MBL9 BK5H 8. W 3/3 3/ /3 5/ MBL5 BK55H 5. W 3/3 3/ /3 5/ MBL5 BK57H 53.3 W 3/3 3/ /3 5/ MBL57 BK6H 5.5 W 3/3 3/ /3 5/ MBL59 BK6H 55. W 3/3 3/ /3 5/ MBL6 BK65H A /6 3/ /3 / MBL6 BK67H 6.6 6A /6 3/ /3 / MBL67 BK7H 6. 6A /6 3/ /3 / MBL A /6 3/ /3 / MBL77 BK8H 7.8 6A /6 3/ /3 / MBL87 BK9H A /6 3/ /3 / MBL97 BKH A /6 3/ /3 / MBL7 BKH 9.6 6A /6 3/ /3 / MBL7 BKH A /6 3/ /3 / MBL7 BK3H 3.6 6A /6 3/ /3 / MBL37 BKH 8.6 6A /6 3/ /3 / MBL57 BK6H 3.9 6A /6 3/ /3 / MBL87 BK9H 5. 6A /6 3/ /3 /3. P.D. for A (L) Belts = Datum.Dia = O.D.. P.D. for B (5L) Belts = O.D. * Dimensions to closest fraction CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 3

24 ADJUSTABLE LIGHT DUTY (H.V.A.C.) & FRACTIONAL FIED BORE (F.H.P.) ADJUSTABLE LIGHT DUTY (H.V.A.C.) MVL DIMENSIONS WT STOCK BORES MARKED PART No. LIST PRICE O.D. F G L K Lbs. MA. MIN. MA. MIN. 5/8 3/ MVL /3 7/3 5/8 3/8 37/6.8 MVL /3 7/3 5/8 3/8 37/6. MVL /8 /6 37/6. MVL /8 /6 37/6.5 MVL /8 /6 37/6.75 VM /6 /6 /3.8 DATUM DIAMETER, INCHES PART No. Min. Max. Turns Turns Turns 3 Turns Turns 5 Turns 6 Turns 7 Turns Close Open Open Open Open Open Open Open MVL L MVL BELT MVL MVL MVL VM MVL A (L) MVL BELT MVL MVL MVL VM MVL5.... B* (5L) MVL BELT MVL MVL MVL VM Pitch Dia. for 3L belts = Datum Dia. +.5 Pitch Dia. for A (L) belts = Datum Dia. +.5 Bore Range Pitch Dia. for B (5L) belts = Datum Dia MVL variable sheave are designed to be used for light duty applications 5/8 5/6 / up to 5HP. 5/6 3/8 *DO NOT use B gripnotch belt ratings with MVL sheave. All packaged per carton. Broken package add 5% to standard price. FRACTIONAL FIED BORE A (L) SERIES (F.H.P.) MFAL DIAMETER STOCK BORES DIMENSIONS Part List D.D. Wt No Price Outside A (L) 5/8 3/ F L P C (lbs) MFAL x x (x) x 9/3 /6 5/3. MFAL x x (x) x 9/3 /6 5/3.5 MFAL x x (x) x 9/3 /6 5/3.75 MFAL x x (x) x 9/3 /6 5/3. MFAL x (x) x 9/3 /6 5/3 3. MFAL x (x) x 9/3 /6 5/3.7 MFAL x (x) x 9/3 /6 5/3 3. MFAL x (x) x 9/3 /6 5/3 3.5 MFAM x /6 3/3 3/3 /3 5. Pitch Dia. for A (L) belts = Datum Dia. +.6 = O.D. +. ( ) = Contact Maska for price and delivery All packaged per carton. Broken package add 5% to standard price. Note: Stock MFAL sheaves include socket head set screw with standard keyseat. Keyseat None 3/6 3/3 / /8 5/6 5/3 Condition: Nonstock bore: MFAL available with bore and smaller; MFAM available with 3/6 bore and smaller. CAUTlON: DO NOT use A gripnotch belts ratings with MFAL and MFAM sheaves. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

25 ADJUSTABLE PITCH SHEAVES 8 SERIES STOCK SIZES AND GROOVES UP TO 5 HP Both and groove adjustable sheaves permit variations of as much as 3% in speed when used with a fixed diameter sheave. When Ordering: Specify Sheave Number and required bore diameter. SINGLE GROOVE DOUBLE GROOVE Approx Part List Shipping Part List Shipping No Price O.D. L.T.B. Available Stock Bores (Inches & mm) Weight No Price L.T.B. Available Stock Bores (Inches & mm) Weight / *5/83/ /8. D /83/ / mm mm 9mm mm / *5/83/ /8. D /83/ /8. 9mm mm 9mm / *5/83/ /8.5 D /8 5/83/ /8 5..7mm mm 9mm mm 8mm / *5/83/ /8 3. D /8 5/83/ /8 6..7mmmm9mmmm8mm.7mm mm 8mm 855K / *5/83/ /8 3/8 5/8.5 D855K /8 3/ /8 3/8 5/ mmmm9mmmm8mm.7mm9mmmm8mm 38mm 86K / 5/83/ /8 3/8 5/8 5. D86K /8 3/ /8 3/8 5/8..7mm9mmmm8mm38mmmm.7mm mm 8mm 38mm 867K / 5/83/ /8 3/8 5/8 6. D867K /8 3/ /8 3/8 5/8..7mm 8mm.7mm mm 8mm 38mm 87K / 3/ /8 3/8 5/8 7. D87K /8 3/ /8 3/8 5/8.3 For other special bores, please call Maska for delivery terms. Applications with a speed superior to 5, ft./min. may require more accurate balancing. * Supplied without keyway Comes with two set screws at degrees U.S. Patent N 5 9 Can. Patent N 678 K = key included Datum Diameter, inches (L) A BELT (5L) B BELT 5V BELT Part Turn Turn Turns 3 Turns Turns 5 Turns 6 Turns No. Min. Max. Close Open Open Open Open Open Open , P.D. for A belts = Datum Dia. A belts +.5 P.D. for B belts = Datum Dia. B belts +.35 P.D. for 5V belts = Datum Dia. 5V belt +. Variable Pulley CrossOver Chart See pages 8, 8 BE SURE TO SPECIFY 5

26 ADJUSTABLE PITCH SHEAVES VP SERIES Maska VP and VP Series are finished bore variable speed sheaves made of cast iron and designed for heavier duty service up to 5HP. Available in single and double grooves, they offer a pitch range from.6 to 7.. TYPE (w/ key) TYPE TYPE 3 (w/ key) TYPE DIMENSIONS Part No. VP5 VP3 VP3 VP VP List Price Type O.D. L /3 F G Max. Min. Max. Min. 3/6 3/6 /6 /6 9/6 9/6 /6 /6 /6 5/8 5/8 3/6 3/8 3/8 Available Stock Bores * * 5/8 3/ * 5/8 3/ * 5/8 3/ * 5/8 3/ Shipping Weight VP VP5 VP5 VP56 VP /8 /6 /8 /6 /8 3/ /6 3/ /6 3/ /8 * 5/8 3/ /8 * 5/8 3/ / VP6 VP6 VP65 VP68 VP7 VP /3 9/3 /3 9/3 /3 /3 / /8 / /8 / / 3/ 3/ /3 /3 /3 /3 /3 /3 /3 /3 3/ /8 3/8 5/8 3/ /8 / 3/8 3/ /8 3/8 5/8 3/ /8 / 3/8 3/ /8 3/8 3/ /8 3/ Part No. List Price Type O.D. L F G Max. Min. Max. Min. Available Stock Bores Shipping Weight VP36 VP VP5 VP /8 /8 /8 3/8 3/8 3/8 3/8 3/6 * 5/8 3/ 5/8 3/ /8 5/8 3/ /8 5/8 3/ / VP6 VP6 VP65 VP / 3 3 / 3 3/8 /8 3/8 /8 5/8 3/8 5/8 3/8 /3 /3 /3 /3 3/ /8 3/8 3/ /8 / 3/8 3/ /8 3/8 /8 / 3/ VP7 VP / 3 / * Supplied without keyway thru the bore 3/8 3/8 5/8 5/8 /3 /3 /3 /3 3/ /8 3/8 3/ /8 3/8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS.6 6.5

27 ADJUSTABLE PITCH SHEAVES DATUM DIAMETERS Belts VP5 VP3 VP3 VP36 VP VP Part No. Min Max Turn Close Datum Diameters (inches) Turn Open Turns Open Turns Open Turns Open Turns Open 6 Turns Open 3L BELT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7 & VP7 VP75 & VP VP3 VP36 VP VP (L) A BELT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7& VP7 VP75 & VP VP3 VP36 VP VP (5L) B BELT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7 & VP7 VP75 & VP VP3 VP36 VP VP 5V BELT VP VP5 & VP5 VP56 & VP56 VP6 & VP6 VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7 & VP7 VP75 & VP P.D. for 3L belts = Datum Dia. 3L belts +.5 P.D. for A (L) belts = Datum Dia. A belts +.5 P.D. for B (5L) belts = Datum Dia. B belts +.35 P.D. for 5V belts = Datum Dia. 5V belts +. BE SURE TO SPECIFY 7

28 HEAVY DUTY MVS DIMENSIONS STOCK BORES MARKED WT PART No. LIST PRICE O.D. F E L H MA. lbs MIN. MA. MIN. MA. /8 3/8 5/8 /8 MVS MVS MVS MVS MVS MVS DATUM DIAMETER, INCHES PART No. Min. Max. Turn Turn Turn 3 Turn Turn 5 Turn 6 Turn 7 Turn Close Open Open Open Open Open Open Open MVS MVS A MVS BELT MVS MVS MVS MVS B MVS BELT MVS MVS MVS MVS MVS V MVS BELT MVS MVS MVS MVS MVS3 5V MVS5* BELT MVS7* MVS , MVS MVS P.D. for A belt = Datum Dia. A belt +.5 P.D. for B belt= Datum Dia. B belt +.35 P.D. for 3V belts = Datum Dia. 3V belts +.5 P.D. for 5V belts = Datum Dia. 5V belts +. * Recommended for use with narrow cog belts only Note: Every turn of the adjustment screw moves the flange by /6. 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

29 STEP PULLEYS MAS (GRAY CAST IRON) FIED BORE, STOCK SIZES FOR 3LL (A) VBELTS Part List Outside No Price Type Diameter STOCK BORES D G F E Wt MAS /83/ 9/6 3/ 3 3/ 3/ 8. MAS /83/ /8 9/6 3/ 3 3/ 7.5 MAS /83/ /8 9/6 3/ / 3/ 6.5 MAS /83/ 3 9/6 3/ 3 3/.5 MAS /83/ /8 3 9/6 3/ / 3/. MAS /83/ 3/ / 3/.3 NOTE: All bores come with set screws. D.D. for A (L) belts = O.D..5 P.D. for A (L) belts = O.D. D.D. for 3L belts = O.D..59 P.D. for 3L belts = O.D..3 Bore Range 5/8 5/6 / Keyseat None 3/6 3/3 / /8 BE SURE TO SPECIFY 9

30 COMPLEMENTARY PRODUCTS NEW VBelt Drive Accessories Indispensable tools for maintenance mechanics to ensure efficient, costsaving operations. VBelt Tension Tester Part No. 637 Net Price: $.9 USD $.5 CAN checking the required force and the belt deflection distance. For use with all small Vbelt and synchronous drives. Comes in a protective plastic tube, instructions included. Force Range: 35 lbs. 5.9 kg Tension Range: 56 lbs. 55 kg Improper belt tension, either too tight or too loose, can result in belt drive problems. For critical drives, a manual verification is insufficient. This indispensable maintenance tool is a handy way of checking belt tension on single strand belts up to wide within the above ranges. Scales are provided for Maintenance Pointers: Belts that are too loose will slip, causing excessive belt and sheave wear. Sagging belts can snap during startup or during peak loads. Proper tension and installation can lengthen belt life and lessen expensive downtime. Belts that are too tight can damage bearings. Both situations reduce power transmission performance levels. 3 Sheave & Belt Gage Part No. 636 Net Price: $.5 USD $. CAN Molded plastic & colormatched with our Vbelt sheaves. 9 keys for grooves & for belts. To determine whether the sheave groove is worn, select the proper sheave gage and insert the correct angle, based on the sheave s diameter, into the groove. For all Classical, Narrow and A/B combination sheaves. Note: You can also use these gages to determine the corresponding belt MASKA that fits with each sheave. Find the gage that fits, depending on size (groove must not be worn), and the characters indicated on the gage will identify the belt type. The belt gages help you determine the proper belt section; just insert the old belt in the V to determine belt cross section. Maintenance Pointers: Inspect sheaves often for optimal operating efficiency. Worn grooves cause one or more belts to ride lower than the others, known as differential driving, resulting in premature wearing of belts and reduced performance levels. Rounded sheave sidewalls ruin belts quickly by wearing their bottom corners (see illustration). The belt s wedging action is also reduced. If more than /3 of wear is evident, reduced Vbelt life will result. Not more than /3 wear FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

31 COMPLEMENTARY INFORMATION Ratio A ratio is a proportional factor between two similar objects of different sizes. In a belt drive system, a ratio is used to determine the speed relation between two pulleys. The speed ratio would be stable if slippage did not occur; however as belt slip is inevitable, the ratio varies and is therefore only theoretical. If the ratio is >, we refer to a speed up system; if the ratio is <, it is a speed reduction system. In both cases, the ratio is obtained using the dimensions of the input drive (driver) pulley and the output (driven) pulley. In the following ratio, R S is the speed ratio, D the diameter of the driver pulley, D the diameter of the driven pulley: Speed & Velocity With reference to a belt drive system, the formula to find rim speed, or belt speed, is: OR Power In mechanical engineering, power is a measure of performance or capacity and is defined as the amount of work performed in a given time. The most work accomplished in the least amount of time, equals greater power. This formula also shows the relation between torque and HP. Power in hp (HP) can be calculated using the following formulas: OR HP can be converted to kilowatts as follows: HP = Kilowatts.3 BE SURE TO SPECIFY 3

32 SHEAVE NOMENCLATURE Classical ABCD QD Sheaves 3B (Listed under B column SK) 3 B SK Number of Grooves Belt Size Datum Diameter. Bushing Narrow 3V5V8V QD Sheaves 8V.5 (Listed under B column P) 8V.5 P Number of Grooves Belt Size Outside Diameter (O.D.).5 Bushing 3 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

33 BALANCING STANDARDS NOMOGRAPH This nomograph shows the maximum speed limit (in RPM) for a gray cast iron standard statically balanced pulley of a given diameter and face width. To exceed this speed limit, the pulley should also be dynamically balanced. Example: If you have a 68V. pulley (see 8V section) with a diameter of and a face width of 7 /8, and it must turn at,8 RPM, what type of balancing is required? Answer: As shown, the limit for this pulley would be,5 RPM, therefore it must be dynamically balanced. Narrow VBelt Sheaves, # of grooves Conventional Belt Sheaves, # of grooves BE SURE TO SPECIFY 33

34 A/B COMBINATION GROOVE GROOVES Datum dia. O.D. Part List F = up to 7.5 O.D. & inch thereafter Part List F = 3/ inches A(L) B(5L) No Price No Price Belts Belts H Type B L E Wt H Type B L E Wt B3 6. B SH / /8 B /8 B SH / / B36 7. B SH / /8 B36. 5/3 B SH / 3/ B38 8. B SH / /8 B38. 5/3 B SH / 3/ B 9. B SH / /8 B. 5/3 B SH / 3/ B 3. B SH / /8 B 6. /6 B SH / 7/ B 3. B SH / /8 B 8. /6 B SH / 7/ B6 3. 7/6 5B SDS 5/6 B6 5. B SDS 5/6 7/ B /6 5B SDS 5/6 3 B8 5. B SDS 5/6 7/ B5 3. 7/6 5B SDS 5/6 3 B5 5. B SDS 5/6 7/ B /6 5B SDS 5/6 3 B5 56. B SDS 5/6 7/ B /6 5B SDS 5/6 B5 58. B SDS 5/6 7/ B /6 5B SDS 5/6 B56 6. B SDS 5/6 7/ B /6 5B SDS 5/6 B58 6. B SDS 5/6 7/ B6. 7/6 5B SDS 5/6 5 B6 6. W SDS 5/6 7/ B6. 7/6 5B SDS 5/6 5 B6 66. W SDS 5/6 7/ B6. 7/6 5B SDS 5/6 6 B6 68. W SDS 5/6 7/ B /6 5B SDS 5/6 6 B W SDS 5/6 7/ B /6 5B SDS 5/6 6 B68 7. W SDS 5/6 7/ B7 5. 9/6 6A SDS 5/6 / 6 B7 7. 3/8 6W SK / B /6 6A SDS 5/6 / 6 B /8 6W SK / B /6 6A SDS 5/6 / 7 B8 7. 3/8 6W SK / B /6 6A SDS 5/6 / 8 B /8 6A SK / B /6 6A SDS 5/6 / 9 B /8 6A SK / B9 6. 9/6 6A SDS 5/6 / 9 B /8 6A SK / B 76. 9/6 6A SDS 5/6 / B 9. 3/8 6A SK / B 9. 9/6 6A SDS 5/6 / B. 9/6 6A SK 7/ B /6 6A SDS 5/6 / 3 B36. 3/8 6A SK / B5 6. /6 5A SK 3/6 B /8 6A SK / B A SK B /8 6A SK / B /6 5A SK /6 8 B8. 3/8 6A SK / B 3. 3/6 5A SK /6 3 B 6. /6 6A SF 7/ B /6 5A SK /6 B /8 5A SF / B3. 7/6 6A SF 3/ B38 8. /3 6A SF 3/3 5 GROOVES 6 GROOVES Datum dia. O.D. Part List F = inches Part List F = 3/ inches A B No Price No Price Belts Belts H Type B L E Wt H Type B L E Wt B3 7. B SD 3/6 3 3/6 5 6B /3 B SD 3/6 / B B SD 3/6 3 3/6 6 6B36. 3/3 B SD 3/6 / B B SD 3/6 3 3/6 6 6B38. 3/3 B SD 3/6 / B 8. /6 B SD 3/6 6 6B. /6 B SD 3/6 3 5/ B 8. /6 B SD 3/6 7 6B 6. /6 B SD 3/6 3 5/ B 8. /6 B SD 3/6 7 6B. /6 B SD 3/6 3 5/ B /8 B SD 3/6 9/6 7 6B6. 5/8 B SD 3/6 5/ B8 9. 5/8 B SD 3/6 9/6 9 6B8. 5/8 B SD 3/6 5/ B5 9. 5/8 B SD 3/6 9/6 6B5 6. 5/8 B SD 3/6 5/ B5 9. 5/8 B SD 3/6 9/6 6B5 8. 5/8 B SD 3/6 5/ B5 96. B SK 5/8 6B5. B SK 3/ B B SK 5/8 6B56. B SK 3/ B58. B SK 5/8 6B58. B SK 3/ B6 6. B SK 5/8 6B6 6. B SK 3/ B6. B SK 5/8 6B6 3. B SK 3/ B6 6. B SK 5/8 6B6 3. B SK 3/ B66. B SK 5/8 5 6B B SK 3/ B68. B SK 5/8 6 6B68. B SK 3/ B7 3. B SF 6 6B7 5. B SF B7 5. B SF 8 6B7. B SF B8 5. W SF 9 6B8 8. W SF B86 6. W SF 6B86. W SF B9 68. A SF B9 7. A SF 6B9 3. W SF B 9. A SF 9 6B 8. A SF B 8. A SF 33 6B 76. A SF B36. A SF 39 6B /3 A SF / B5 68. A SF 3 6B5 3. 3/3 A SF / B6 9. A SF 6 6B6 38. A SF B8 36. A SF 5 6B /3 A SF / B 39. 3/6 A E 5/8 3/ B 6. 3/6 A E 5/8 5/ B5 5. 3/6 A E 5/8 3/6 8 6B /6 A E 5/8 3/ B /6 A E 5/8 3/6 3 6B /6 A E 5/8 3/ B /6 A E 3/8 3/6 69 6B38. 5/6 A E 5/8 3/6 57 P.D. for A (L) Belts = Datum Dia = O.D.. P.D. for B (5L) Belts = O.D. QD bushings is a registered trademark and manufactured by Maska under license. 3 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

35 A/B COMBINATION Datum dia. A B O.D. Belts Belts GROOVES GROOVES Part List F = inches Part List F = 3 / inches No Price No Price H Type B L E Wt H Type B L E Wt 3B3. 5/8 B SH / 3 B3 6. B SD 3/6 7/6 3B /8 B SH / B B SD 3/6 7/6 5 3B /8 B SH / B B SD 3/6 7/6 6 3B 5. 5/8 B SH / B 7. /6 B SD 3/6 /8 5 3B 5. 7/6 B SH / 3/6 B 7. /6 B SD 3/6 /8 6 3B 5. 7/6 B SH / 3/6 5 B 7. /6 B SD 3/6 /8 6 3B /8 B SD 3/6 5/6 5 B /8 B SD 3/6 3/6 7 3B /8 B SD 3/6 5/6 6 B /8 B SD 3/6 3/6 8 3B5 6. 3/8 B SD 3/6 5/6 7 B5 8. 5/8 B SD 3/6 3/6 8 3B5 6. 3/8 B SD 3/6 5/6 7 B5 8. 5/8 B SD 3/6 3/6 9 3B5 6. 3/8 B SD 3/6 5/6 8 B5 8. 5/8 B SD 3/6 3/6 3B /8 B SD 3/6 5/6 9 B /8 B SD 3/6 3/6 3B /8 W SD 3/6 5/6 9 B /8 W SD 3/6 3/6 3B6 7. 3/8 W SD 3/6 5/6 B6 9. 5/8 W SD 3/6 3/6 3B6 7. 3/8 W SD 3/6 5/6 B6 9. 5/8 W SD 3/6 3/6 3B /8 W SD 3/6 5/6 B /8 W SD 3/6 3/6 3B /8 W SD 3/6 5/6 B66. 5/8 W SD 3/6 3/6 3B /8 W SD 3/6 5/6 B68. 5/8 W SD 3/6 3/6 3B7 8. /8 6W SK 3/ B7 8. 3/6 W SK 3/6 3 3B7 8. /8 6W SK 3/ B7. 3/6 W SK 3/6 5 3B8 88. /8 6W SK 3/ 3 B8 6. 3/6 W SK 3/6 5 3B /8 6A SK 3/ B86. 3/6 A SK 3/6 7 3B9. /8 6A SK 3/ 5 B9 3. 3/6 A SK 3/6 7 3B9. /8 6A SK 3/ 7 B /6 A SK 3/6 9 3B. /8 6A SK 3/ B 5. 3/6 A SK 3/6 5 3B. /8 6A SK 3/ 5 B 7. 3/6 A SK 3/6 8 3B /8 6A SK 3/ 8 B36. 3/6 A SK 3/6 3 3B5. /8 6A SK 3/ 3 B5. 3/6 A SF /6 38 3B6. /8 6A SK 3/ 3 B6. 3/6 A SF /6 3B8. /8 6A SK 3/ B8 6. 3/6 A SF /6 8 3B 3. 3/6 A SF / B 36. 3/6 A SF /6 6 3B5. 3/6 A SF /6 76. B5 8. /6 A E 5/8 /6 93 3B3 5. 3/6 A SF /6 96 B3 56. /6 A E 5/8 /6 3B /8 6A E 5/8 / 5 B A E 5/8 5/8 6 Datum dia. A B O.D. Belts Belts GROOVES 8 GROOVES Part List F = 5 inches Part List F = 6 / inches No Price No Price H Type B L E Wt H Type B L E Wt P R 7B5 I B SK 5/8 3 8B5 8. B SK 3 3/8 5 7B56 B SK 5/8 5 8B56 8. B SK 3 3/8 7 7B58 C B SK 5/8 5 8B B SK 3 3/8 6 7B6 E B SF 8B6 9. B SF 3 / 6 7B6 B SF 6 8B6 96. B SF 3 / 8 O 7B6 B SF 7 8B6. B SF 3 / 9 7B66 N B SF 7 8B66 8. B SF 3 / 7B68 B SF 8 8B68. B SF 3 / 7B7 R B SF 8B7 6. B SF 3 / 7B7 B SF 3 8B7 8. B SF 3 / 5 E Q 8B /6 B E 5/8 5/6 9 7B86 U B E 5/8 3 8B /6 B E 5/8 5/6 33 7B9 E B E 5/8 3 8B9 3. 5/6 B E 5/8 5/6 36 7B B E 5/8 36 8B /6 B E 5/8 5/6 6 7B S W E 5/8 8B 37. 5/6 W E 5/8 5/6 53 T 7B36 A E 5/8 9 8B /8 A E 5/8 / 59 7B5 A E 5/8 57 8B5 5. 3/8 A E 5/8 / 69 7B6 A E 5/8 7 8B /6 A E 5/8 5/6 7 7B8 3/3 A F 3 5/8 5/3 8 8B /3 A F 3 5/8 7/3 8 7B 3/3 A F 3 5/8 5/3 97 8B 69. 3/3 A F 3 5/8 7/3 7B5 3/3 A F 3 5/8 5/3 7 8B /3 A F 3 5/8 7/3 5 7B3 3/3 A F 3 5/8 5/3 55 8B3 6. 3/3 A F 3 5/8 7/3 86 7B38 3/3 A F 3 5/8 5/3 5 8B /3 A F 3 5/8 7/3 All dimensions are to closest fraction For mounting instructions, see page 8 B : Bushing size Suffix on type indicates construction: A = arms; B = block; W = web. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 35

36 A/B COMBINATION 9 GROOVES GROOVES Datum dia. O.D. Part List F = 7 inches Part List F = 7 3/ inches A B No Price No Price Belts Belts H Type B L E Wt H Type B L E Wt P R B5 I 5/3 W SK 3 /3 5 B5 8. 3/ W SK / B56 5/3 W SK 3 /3 6 B / W SK / B58 C 5/3 W SK 3 /3 7 B / W SK / B6 E 5/3 W SF 3 7/3 8 B6 3. 3/ W SF B6 5/3 W SF 3 7/3 8 B6 3. 3/ W SF B6 O 5/3 W SF 3 7/3 9 B6 3. 3/ W SF B66 N 5/3 W SF 3 7/3 B / W SF B68 5/3 W SF 3 7/3 B / W SF B7 R 5/3 W SF 3 7/3 B / W SF B7 5/3 W SF 3 7/3 3 B / W SF E B8 Q B86 U 3/ W E 5/8 5/8 8 B /6 W E 5/8 3 / B9 E 3/ W E 5/8 5/8 37 B9. /6 W E 5/8 3 / B 3/ W E 5/8 5/8 8 B 5. /6 W E 5/8 3 / B S 3/ A E 5/8 5/8 55 B 53. /6 W E 5/8 3 /6 58 T B36 9/3 A F 3 5/8 5/3 65 B /3 A F 3 5/8 3 9/ B5 9/3 A F 3 5/8 5/3 78 B /3 A F 3 5/8 3 9/ B6 9/3 A F 3 5/8 5/3 9 B /3 A F 3 5/8 3 9/ B8 9/3 A F 3 5/8 5/3 B8 8. 7/3 A F 3 5/8 3 9/ B 9/3 A F 3 5/8 5/3 B 86. 7/3 A F 3 5/8 3 9/ B5 5/3 A F 3 5/8 5/3 38 B5 6. 7/3 A F 3 5/8 3 9/ B3 5/3 A F 3 5/8 5/3 8 B /3 A F 3 5/8 3 9/ B38 7/3 A J 9/3 B /3 A J 3 /3 6 P.D. for A (L) Belts = Datum Dia = O.D.. P.D. for B (5L) Belts = O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) 36 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

37 C SECTION GROOVE GROOVES Datum O.D. Part List F = 3/8 inches Part List F = 3/8 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt C6 6. /6 B SF 5/ C7. 9/6 5B SF /6 C7 3. B SF 3/ C75. 9/6 5B SF /6 C B SF 3/ C8. 9/6 5B SF /6 3. C8. B SF 3/ C /6 5B SF /6 5.6 C85 8. B SF 3/ C9 3. 9/3 5W SF /3 3 C9 5. W SF 3/ C /3 5W SF /3 8 C95 6. W SF 3/8.. C. /6 6W SF /6 C 76. W SF 3/ C5 5. /6 6W SF /6 C5 88. W SF 3/8 3.. C 7. 7/3 5W SF 3/3 5 C. W SF 3/8 6.. C 8. /6 6W SF /6 6 C. / 6W SF 9/ C3. /6 6A SF /6 8 C3 5. / 6A SF 5/ C 6. /6 6A SF /6 C 7. / 6A SF 5/ C6 8. /6 6A SF /6 C6 9. / 6A SF 5/ C8 3. /6 6A SF /6 3 C8 3. / 6A SF 5/8 5.. C 3. /6 6A SF /6 35 C 3. / 6A SF 5/ C 36. /6 6A SF /6 6.9 C 6. / 6A SF 5/ C /3 5A F 3 5/8 / C3 6. 9/3 5A F 3 5/8 / GROOVES GROOVES Datum O.D. Part List F = 3 3/8 inches Part List F = 3/8 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt C /6 B SD 3/6 / 9 C /8 B SD 3/6 5/ C5SK 36. 3/6 B SK 5/6.5 C5SK 56. 3/6 B SK 3 5/ C /6 B SD 3/6 / C B SD 3/6 / C6. /6 B SF 5/6.3 C6 6. 3/6 B SF 3 3/ C7. B SF 6 C7 6. 3/ B SF 5/ C75 8. B SF 8 C / B SF 5/ C8 56. /6 B E 5/8 /6 C /6 B E 5/8 3/ C /6 B E 5/8 /6 C /6 B E 5/8 3/ C9 88. /6 B E 5/8 /6 6 C9. 5/6 B E 5/8 3/ C95. /6 W E 5/8 /6 9.8 C /6 B E 5/8 3/ C. /6 W E 5/8 /6 3 C. 5/6 B E 5/8 3/ C5 3. /6 W E 5/8 /6 37 C5 6. 5/6 W E 5/8 3/ C. /6 W E 5/8 /6 39 C 7. 5/6 W E 5/8 3/6... 3C 5. /6 W E 5/8 /6 3. C 3. 5/6 W E 5/8 3/ C3 9. /6 A E 5/8 /6 5 C /6 A E 5/8 3/ C 3. /6 A E 5/8 /6 5 C 36. 5/6 A E 5/8 3/ C6 33. /6 A E 5/8 /6 6 C6. 5/6 A E 5/8 3/ C8 35. /6 A E 5/8 /6 63 C8 3. 5/6 A E 5/8 3/ C. /6 6A E 5/8 3/6 8 C 5. 7/6 A E 5/8 5/ C 8. /6 6A E 5/8 3/6 9.7 C 56. 3/3 A F 3 5/8 / C /3 5A F 3 5/8 5/3 6 C /3 A F 3 5/8 / C3 6. 3/3 5A F 3 5/8 5/3 3. C /3 A F 3 5/8 / C /3 5A F 3 5/8 5/3 59 C36. 5/3 A F 3 5/8 9/ C 7. 3/3 5A F 3 5/8 5/3 9 C 8. 7/3 A J / C5 9. 3/3 5A F 3 5/8 5/3 5 C5. 7/3 A J /3 75. P.D. for C Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 37

38 C SECTION 5 GROOVES 6 GROOVES Datum O.D. Part List F = 5 3/8 inches Part List F = 6 3/8 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt C6 7. /6 B SF 3 5/6 6 6C6. /6 B SF 3 5/ C7 76. /8 B SF / 3 6C7 8. /8 B SF 3 / C75. /8 B SF / 5 6C75 6. /8 B SF 3 / C /6 B E 5/8 7/6 8 6C8 8. 5/6 B E 5/8 7/ C /6 B E 5/8 7/6 3 6C /6 B E 5/8 7/ C /6 B E 5/8 7/6 36 6C /3 B F 3 5/8 7/ C /6 B E 5/8 7/6 6C /3 B F 3 5/8 7/ C 76. 5/6 W E 5/8 7/6 6C 38. 7/3 B F 3 5/8 7/ C /6 W E 5/8 7/6 6C /3 B F 3 5/8 7/ C 33. 5/6 W E 5/8 7/6 7 6C /3 W F 3 5/8 7/ C /6 W E 5/8 7/6 55 6C. 7/3 W F 3 5/8 7/ C /6 A E 5/8 7/6 55 6C3. 7/3 A F 3 5/8 7/ C 38. 5/6 A E 5/8 7/6 6 6C 8. 7/3 A F 3 5/8 7/ C6 3. 5/6 A E 5/8 7/6 73 6C6 5. 7/3 A F 3 5/8 7/ C8 8. 5/6 A E 5/8 7/6 83 6C /3 A F 3 5/8 7/3.. 5C 6. 3/3 A F 3 5/8 /3 9 6C 6. 3/3 A F 3 5/8 / C 6. 3/3 A F 3 5/8 /3 9 6C 7. 3/3 A F 3 5/8 / C /3 A F 3 5/8 /3 9 6C /3 A J 3/ C3 8. 3/3 A F 3 5/8 /3 7 6C3. 5/3 A J 3/ C /3 A J /3 5 6C /3 A J /3.. 5C 9. 7/3 A J /3 85 6C. 7/3 A J / C5 8. 7/3 A J /3 35 6C5 68. /3 A M 6 3/ 3/3 3 9 GROOVES GROOVES Datum O.D. Part List F = 9 3/8 inches Part List F = 3/8 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt P C8 3/6 B E 5/8 9/6 37 C8 6. 3/6 B E 5/8 5 9/6 6.3 R C85 I 3/6 B E 5/8 9/6 7 C /6 B E 5/8 5 9/ C9 C 5/3 B J 3/3 9 C9 5. 5/3 B J 3 3/ C95 9C E 5/3 5/3 B B J J 3/3 3/ C95 C /3 5/3 B B J J 3 3/ / C5 5/3 B J 3/3 7 C /3 B J 3 3/ C 9C O N 5/3 5/3 B B J J 3/3 3/ C C /3 5/3 B B J J 3 3/ / C3 9C R 5/3 5/3 W W J J 3/3 3/3 96 C3 C /3 5/3 W W J J 3 3/3 3 3/ C6 E 5/3 A J 3/3 C /3 A J 3 3/3 Q C8 5/3 A J 3/3 3 C8 8. 5/3 A J 3 3/ C U /3 A J 3 7/3 6 C. 5/3 A J 3 3/ C E /3 A M 3 7/3 7 C 36. 9/3 A M 6 3/ 3 / C7 S /3 A J 3 7/ C3 T 9/3 A M 6 3/ /3 6 C /3 A M 6 3/ 3 / C36 9/3 A M 6 3/ /3 33 C /3 A M 6 3/ 3 / C 9/3 A M 6 3/ /3 5 C 8. 9/3 A M 6 3/ 3 / C5 9/3 A M 6 3/ /3 5 C /3 A M 6 3/ 3 /3 55 P.D. for C Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 8 QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) 38 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

39 C SECTION 7 GROOVES 8 GROOVES Datum O.D. Part List F = 7 3/8 inches Part List F = 8 3/8 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt C7 3/3 B SF 3 9/3 3 8C7 3. 3/3 B SF 3 3/ P C8 3/6 B E 5/8 9/6 3 8C /6 B E 5/8 3 9/ R C85 I 3/6 B E 5/8 9/6 38 8C85. 3/6 B E 5/8 3 9/ C9 C 3/3 B F 3 5/8 /3 5 8C9. 3/3 B F 3 5/8 / C95 7C E 3/3 3/3 B B F F 3 5/8 3 5/8 /3 / C95 8C. 3. 3/3 3/3 B B F F 3 5/8 3 5/8 /3 / C5 3/3 B F 3 5/8 /3 58 8C5 5. 3/3 B F 3 5/8 /3 6 O.... 7C 7C N 3/3 3/3 B B F F 3 5/8 3 5/8 /3 / C 8C /3 3/3 B B F F 3 5/8 3 5/8 /3 / C3 7C R 3/3 3/3 W A F F 3 5/8 3 5/8 /3 / C3 8C /3 3/3 W A F F 3 5/8 3 5/8 /3 / C6 E 3/3 A F 3 5/8 /3 98 8C6 7. 3/3 A F 3 5/8 /3 Q C8 3/3 A F 3 5/8 /3 8C /3 A F 3 5/8 / C U 5/3 A J 3/3 33 8C 87. 5/3 A J 3 3/ C E 5/3 A J 3/3 5 8C. 5/3 A J 3 3/ C7 S 5/3 A J 3/3 75 8C7. 5/3 A J 3 3/ C3 5/3 A J 3/3 8C3 8. 5/3 A J 3 3/3 7 T C36 5/3 A J 3/3 55 8C /3 A M 6 3/ / C 9/3 A M 6 3/ /3 37 8C 56. 9/3 A M 6 3/ / C5 9/3 A M 6 3/ /3 8C5 3. 9/3 A M 6 3/ /3 57 GROOVES Datum O.D. Part List F = 3/8 inches Dia. No Price H Type B L E Wt C9 7. /3 B J 5 7/ C95 7. /3 B J 5 7/ C 7. /3 B J 5 7/ C5 76. /3 B J 5 7/ C 78. /3 B J 5 7/3.. C 8. /3 B J 5 7/ C3 9. /3 W J 5 7/ C 8. /3 W J 5 7/ C6 36. /3 A J 5 7/ C8. /3 A J 5 7/ C 8. 9/3 A M 6 3/ 5 / C 5. 9/3 A M 6 3/ 5 / C /3 A M 6 3/ 5 / C /3 A M 6 3/ 5 /3 3.. C 3. 9/3 A M 6 3/ 5 / C /3 A M 6 3/ 5 /3 595 P.D. for C Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 8 QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 39

40 D SECTION 3 GROOVES GROOVES Datum O.D. Part List F = 5/8 inches Part List F = 6 /6 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt..6 3D 56. 9/3 W F 3 5/8 3/3 58 D 6. 3/3 W F 3 5/8 / D3 6. 9/3 W F 3 5/8 3/3 6 D3 6. 3/3 W F 3 5/8 / D /3 W F 3 5/8 3/3 65 D /3 W F 3 5/8 / D 6. 9/3 W F 3 5/8 3/3 7 D 68. 3/3 W F 3 5/8 / D /3 W F 3 5/8 3/3 75 D /3 W F 3 5/8 / D5 7. 9/3 W F 3 5/8 3/3 79 D5 8. 3/3 W F 3 5/8 / D /3 W F 3 5/8 3/3 9 D /3 W F 3 5/8 / D /3 A F 3 5/8 3/3 95 D6 8. 3/3 A F 3 5/8 / D7 9. 5/3 A J 3/ D8 8. 7/3 6A J /3 5 D /3 A J 3/ D 98. 5/3 A J 3/ D 96. 7/3 6A J /3 35 D. 5/3 A J 3/ D7 6. 7/3 6A J /3 7 D7 8. 5/3 A J 3/ D /3 6A J /3 5 D33. 9/3 A M 6 3/ 3/ D. 7/3 6A J /3 75 D. 9/3 A M 6 3/ 3/ GROOVES 8 GROOVES Datum O.D. Part List F = 3/8 inches Part List F = 3/6 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt..6 7D 5/3 B J 3 3/3 8D. 5/3 B J 5 5/ D3 P 5/3 B J 3 3/3 6 8D3 6. 5/3 B J 5 5/ D35 R 5/3 B J 3 3/3 8D /3 B J 5 5/ D I 5/3 W J 3 3/3 6 8D 3. 5/3 B J 5 5/ D5 C 5/3 W J 3 3/3 3 8D /3 B J 5 5/3 E D5 5/3 W J 3 3/3 39 8D /3 W J 5 5/ D55 O 5/3 W J 3 3/3 5 8D55. 5/3 W J 5 5/ D6 N 5/3 W J 3 3/3 6 8D /3 W J 5 5/ D7 5/3 W J 3 3/3 97 8D /3 W J 5 5/ D8 R 7/3 A M 6 3/ 5/3 8 8D8 8. 9/3 W M 6 3/ 5/3..6 7D E 7/3 A M 6 3/ 5/3 5 8D. 9/3 A M 6 3/ 5/ D Q 9/3 A M 6 3/ 3 /3 5 8D 6. 9/3 A M 6 3/ 5/ D7 U 9/3 A M 6 3/ 3 /3 35 8D /3 A M 6 3/ 5/ D33 E 9/3 A M 6 3/ 3 /3 8D /3 A M 6 3/ 5/3..6 7D S /8 A M 6 3/ /8 55 8D 37. /8 A N 8 /8 3 9/ D8 T /8 A N 8 /8 /8 75 8D8 3. /8 A N 8 /8 3 9/ D58 /8 A N 8 /8 /8 89 8D /8 A N 8 /8 3 9/6 P.D. for D Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 8 QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

41 D SECTION 5 GROOVES 6 GROOVES Datum O.D. Part List F = 7 inches Part List F = 8 5/6 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt..6 5D 78. 7/3 W F 3 5/8 /3 7 6D 96. 9/3 B J 7/ D3 8. 7/3 W F 3 5/8 /3 8 6D /3 B J 7/ D /3 W F 3 5/8 /3 9 6D35. 9/3 B J 7/3..6 5D 86. 7/3 W F 3 5/8 /3 9 6D. 9/3 B J 7/ D5 9. 7/3 W F 3 5/8 /3 6D5. 9/3 B J 7/ D5 9. 7/3 W F 3 5/8 /3 6D5 6. 9/3 W J 7/ D /3 W F 3 5/8 /3 6D /3 W J 7/ D /3 A F 3 5/8 /3 6D6. 9/3 A J 7/ D7. 9/3 A J 3/3 8 6D7. 9/3 A J 7/ D8. 9/3 A J 3/3 3 6D8. 9/3 A J 7/ D. 5/3 A J 7/3 8 6D 8. 9/3 A J 7/ D. 5/3 A J 7/3 5 6D 8. 9/3 A M 6 3/ 9/ D7 7. 9/3 A M 6 3/ 5/3 5 6D7 9. 9/3 A M 6 3/ 9/ D /3 A M 6 3/ 5/3 3 6D /3 A M 6 3/ 9/ D 7. 9/3 A M 6 3/ 5/3 6D 98. 9/3 A M 6 3/ 9/ D /3 A M 6 3/ 5/3 55 6D /3 A M 6 3/ 9/ D /3 A M 6 3/ 5/3 6 6D /3 A M 6 3/ 9/ GROOVES GROOVES Datum O.D. Part List F = 3 / inches Part List F = /6 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt..6 9D 9/3 B M 6 3/ 7/3 5 D 5. 9/3 B M 6 3/ 5 / D3 P 9/3 B M 6 3/ 7/3 8 D /3 B M 6 3/ 5 / D35 R 9/3 B M 6 3/ 7/3 95 D /3 B M 6 3/ 5 / D I 9/3 B M 6 3/ 7/3 3 D 7. 9/3 B M 6 3/ 5 / D5 C 9/3 B M 6 3/ 7/3 D5 8. 9/3 B M 6 3/ 5 / D5 E 9/3 B M 6 3/ 7/3 D /3 B M 6 3/ 5 / D55 9/3 B M 6 3/ 7/3 3 D /3 B M 6 3/ 5 / D6 O 9/3 B M 6 3/ 7/3 5 D6 9. 9/3 B M 6 3/ 5 / D7 N 9/3 W M 6 3/ 7/3 65 D7 8. 9/3 B M 6 3/ 5 / D8 9/3 W M 6 3/ 7/3 75 D8. 9/3 W M 6 3/ 5 /3 75 R..6 E D 38. 9/3 A M 6 3/ 5 / D Q 9/3 A M 6 3/ 5 7/3 3 D 8. 9/3 A M 6 3/ 6 / D7 U 9/3 A M 6 3/ 5 7/3 375 D /3 A M 6 3/ 6 / D33 /8 A N 8 / D /3 A N 8 /8 5 7/ D E /8 A N 8 / D 3. /3 A N 8 /8 5 7/3 68 S D8 T 3/6 A P 8 /8 3 /6 8 D /6 A P 9 3/8 5 / D58 3/6 A P 9 3/8 3 /6 D /6 A P 9 3/8 5 /8 5 GROOVES Datum O.D. Part List F = 7 9/6 inches Dia. No Price H Type B L E Wt..6 D /3 B M 6 3/ 7 7/ D /3 B M 6 3/ 7 7/ D /3 B M 6 3/ 7 7/ D /3 B M 6 3/ 7 7/ D5. 3 9/3 B M 6 3/ 7 7/ D5. 3 9/3 B M 6 3/ 7 7/ D /3 B M 6 3/ 7 7/ D6. 3 9/3 B M 6 3/ 7 7/ D /3 W M 6 3/ 7 / D8. 3 5/3 W M 6 3/ 7 / D /3 W M 6 3/ 7 7/ D 98. 9/3 A M 6 3/ 7 7/ D7 36. /8 A N 8 /8 7 5/ D /8 A N 8 /8 7 5/ D 5. 3/6 A P 9 3/ D /6 A P 9 3/ D /6 A P 9 3/8 8 5 P.D. for D Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 8 QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY

42 3V SECTION GROOVE GROOVES O.D. Datum Part List F = /6 up to.6 O.D. incl. Part List F = 3/3 inches Dia. No Price and 3/6 inch thereafter No Price H Type B L E Wt H Type B L E Wt..5 3V.. 33/6 B JA 5/6.8 3V /6 B JA 7/ V /6 B JA 5/6.85 3V /6 B JA 7/ V /6 B JA 5/6.9 3V /6 B JA 7/ V.65. 9/6 6B JA 9/6.5 3V /6 6B JA 3/ V /6 6B JA 9/6.7 3V /6 6B JA 3/ V3.. 9/6 6B JA 9/6.7 3V /6 6B JA 3/ V /6 6B JA 9/6.7 3V /6 6B JA 3/ V /6 6B JA 9/6. 3V B SH / / V /8 6B SH / /6.3 3V B SH / / V /8 6B SH / /6.8 3V.. 9/3 6B SH / / V /8 6B SH / /6. 3V.5. 9/3 6B SH / / V /8 6B SH / /6. 3V /3 6B SH / / V /8 6B SH / /6.9 3V /3 6B SH / / V /8 6B SH / / V /3 6B SH / / V /8 6B SH / / V /3 6B SH / / V6.. 5/8 6W SH / / V /3 6W SH / / V6.5. 5/8 6W SH / /6.9 3V /8 6W SDS 5/6 5/ V /8 6W SH / / V /8 6W SDS 5/6 5/ V8. 6. /6 6A SDS 5/6 /6 5. 3V /8 6A SDS 5/6 5/ V.6. /6 6A SDS 5/6 / V.6. 5/8 5A SK 5/ V.. 3/6 5A SK / 5.3 3V. 7. 5/8 5A SK 5/ V9.. 9/3 5A SK 5/ V9.. 3/6 5A SK / V /6 5A SF 3/ GROOVES GROOVES O.D. Datum Part List F = inches Part List F = 9/3 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt V /8 6B JA. 3V.65. 3/8 6B JA 9/ V /8 6B JA.3 3V.8.8 3/8 6B JA 9/ V3.* /8 B SH / /.6 3V /8 B SH / / V3.5*. 5/8 B SH / /. 3V /8 B SH / / V /6 6B SH / 3/6.8 3V B SH / 5/ V /6 6B SH / 3/6. 3V B SH / 5/ V.. B SH / /.7 3V. 5. 5/6 B SH / / V.5 5. B SDS 5/6 3/6 3. 3V.5 5. /8 B SDS 5/6 5/ V B SDS 5/6 3/ V /8 B SDS 5/6 5/ V B SDS 5/6 3/6. 3V5. 6. /8 B SDS 5/6 5/ V B SDS 5/6 3/6.7 3V / B SDS 5/6 / V B SDS 5/6 3/6 5. 3V /8 B SDS 5/6 5/ V B SDS 5/6 3/6 6. 3V6. 7. / 6B SK 9/ V W SDS 5/6 3/ V / 6B SK 9/ V W SDS 5/6 3/ V / 6B SK 9/ V /8 6A SK / 9.8 3V / 6A SK 9/ V /8 6A SK /. 3V.6 8. / 6A SK 9/ V. 8. 5/8 6A SK / 9. 3V. 96. / 6A SK 9/ V /6 6A SF 5/6 3. 3V /6 6A SF / V5.. 3/6 6A SF 5/ V5.. 7/6 6A SF / V /3 6A SF 7/ V /3 6A E 5/8 /6 9. P.D. for 3V Belts same as O.D. *For 33V3.: F=.9 *For 33V3.5: F= All dimensions are to closest fraction For mounting instructions, see page 8 B : Bushing size Suffix on type indicates construction: A = arms; B = block; W = web. QD bushings is a registered trademark and manufactured by Maska under license. FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

43 3V SECTION 5 GROOVES 6 GROOVES O.D. Datum Part List F = 5/6 inches Part List F = 3/3 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt V /8 B SDS 5/6.7 63V /6 B SK / V /8 B SDS 5/ V /6 B SK / V /6 B SK 3/ V /3 B SK 3/ V /3 B SK 3/ V /6 B SK 3/ V /6 B SK 3/ V /6 B SK 3/ V /6 B SK 3/ V /6 B SK 5/ V /3 B SK 3/3.5 63V6.9. 7/6 B SK 3/ V8. 9. /6 W SK 3/8.5 63V8.. /6 W SK 5/ V /3 A SK 9/ V.6. 5/3 A SF 9/ V. 3. 3/3 6A SF 3/ V. 8. 3/3 A SF 5/ V /3 A SF 7/ V /3 6A E 5/8 / V /6 6A E 5/8 / V5. 5. /3 6A E 5/8 / V /8 6A E 5/8 / V /3 A E 5/8 /6.6 8 GROOVES GROOVES O.D. Datum Part List F = 3 7/3 inches Part List F = /3 inches Dia. No Price No Price H Type B L E Wt H Type B L E Wt V /6 B SK 5/3 7. 3V /6 B SK 3 9/ V5.. 3/6 B SK 5/ V /6 B SK 3 9/ V5.3. 7/6 B SK 7/ V /6 B SK 9/ V /6 B SK 7/ V /6 B SK 9/ V /6 B SK 7/3.7 3V /6 B SK 9/ V /6 B SK 7/ V6.5. 9/6 B SK 9/ V /6 B SK 7/3 5. 3V /6 B SK 9/ V /6 W SF 7/3 9. 3V8. 9. /6 W SF / V.6. 5/6 A SF 7/3.5 3V.6 5. W E 5/8 3/ V. 8. /8 6A E 5/8 /3.9 3V. 3. A E 5/8 3/ V9.. /8 6A E 5/8 / V9. 7. A E 5/8 3/ V /6 6A E 5/8 3/3 9. 3V /6 A F 3 5/8 5/ V /3 6A F 3 5/8 3/ V33.5. /6 A F 3 5/8 5/3 8. P.D. for 3V Belts same as O.D. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE BE TO SURE SPECIFY TO SPECIFY 3

44 5V SECTION O.D. Datum Dia. GROOVES 3 GROOVES Part List F = /6 inches Part List F = 3/8 inches No Price No Price H Type B L E Wt H Type B L E Wt..3 5V B SH / 5/ V. 79. /6 B SDS 5/6 3/ V /6 B SDS 5/6 / V /6 B SDS 5/6 3/ V /3 6B SDS 5/6 3/ V /8 B SDS 5/6 / V /3 6B SDS 5/6 9/3.8 35V /8 B SDS 5/6 / V /3 6B SDS 5/6 9/ V /6 B SDS 5/6 3/ V /3 6B SDS 5/6 9/ V /6 B SDS 5/6 3/ V /6 6B SK / V / B SK / V /6 6B SK / V6.7. / B SK / V7.. 3/8 6B SK 3/6.6 35V7. 8. /6 6B SF 7/ V7.5. 3/8 6B SK 3/6. 35V /6 6B SF 7/ V8.. 3/8 6B SK 3/6.3 35V8.. /6 6B SF 7/ V /8 6B SK 3/ V /6 6B SF 7/ V /8 6B SK 3/ V9. 5. /6 6B SF 7/ V9.5. 3/8 6W SK 3/ V /6 6W SF 7/ V /8 6W SK 3/ V /6 6W SF 7/ V /8 6W SK 3/ V.3 7. /6 6W SF 7/ V /8 6W SK 3/6.8 35V /6 6W SF 7/ V /8 6A SK 3/ V.3 8. /6 6A SF 7/ V /8 6A SK 3/ V.8 9. /6 6A SF 7/ V /8 5A SF /6.8 35V.5. /6 6A E 5/8 7/ V /8 5A SF /6. 35V3.. /6 6A E 5/8 7/ V. 3. 3/8 5A SF /6.8 35V. 58. /6 6A E 5/8 7/ V /8 5A SF / V5. 7. /6 6A E 5/8 7/ V /8 5A SF / V6. 8. /6 6A E 5/8 7/ V /8 5A SF / V /6 6A E 5/8 / V. 6. 3/8 5A SF / V.. /6 6A E 5/8 7/ V /6 5A E 5/8 5/ V /3 6A E 5/8 3/ V /6 5A E 5/8 5/ V /6 6A E 5/8 / V /3 5A F 3 5/8 9/ V /3 5A F 3 5/8 9/ V /3 5A F 3 5/8 9/3 8. O.D. Datum Dia. GROOVES 5 GROOVES Part List F = 3 /6 inches Part List F = 3 3/ inches No Price No Price H Type B L E Wt H Type B L E Wt..3 5V. 9. /6 B SD 3/6 5/ V.. /6 B SD 3/6 5/ V /6 B SD 3/6 5/ V.65. /6 B SD 3/6 5/ V.9. 5/8 B SD 3/6 5/ V /8 B SD 3/6 5/ V5.. 5/8 B SD 3/6 5/ V5.. 5/8 B SD 3/6 5/ V /8 B SD 3/6 5/ V /8 B SD 3/6 5/ V5.9. 5/8 B SD 3/6 5/8. 55V B SK 3/ V B SK /6.7 55V6.3. B SK 3/ V B SK / V B SF / V7.. B SF /6.5 55V /6 B SF 7/ V B SF / V /6 B SF 7/ V B E 5/8 7/ V /6 B E 5/8 3/ V B E 5/8 7/6.7 55V /6 B E 5/8 3/ V9. 6. B E 5/8 7/6. 55V /6 B E 5/8 3/ V B E 5/8 7/ V9.5. 5/6 B E 5/8 3/ V B E 5/8 7/ V /6 B E 5/8 3/ V.3. W E 5/8 7/ V.3. 5/6 W E 5/8 3/ V.9 6. W E 5/8 7/ V.9. 5/6 W E 5/8 3/ V.3. W E 5/8 7/ V.3. 5/6 W E 5/8 3/ V.8 6. W E 5/8 7/ V.8. 5/6 W E 5/8 3/ V.5 3. W E 5/8 7/ V /6 W E 5/8 3/ V A E 5/8 7/ V /6 W E 5/8 3/ V. 9. A E 5/8 7/6. 55V. 3. 5/6 A E 5/8 3/ V5. 3. A E 5/8 7/ V /6 A E 5/8 3/ V6. 3. A E 5/8 7/ V6.. 5/6 A E 5/8 3/ V /6 A E 5/8 / V /3 6A F 3 5/8 3/ V. 5. 3/6 6A E 5/8 5/ V /3 6A F 3 5/8 / V /3 6A F 3 5/8 3/ V /3 6A F 3 5/8 / V8. 6. /3 6A F 3 5/8 3/ V /3 6A F 3 5/8 / V /3 5A F 3 5/8 7/3. 55V /6 6A J 5/ V37.5. /3 6A F 3 5/8 3/ V A J / V /6 5A J V A J /8 39. P.D. for 5V Belts same as O.D. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

45 5V SECTION O.D. Datum Dia. 6 GROOVES 8 GROOVES Part List F = 7/6 inches Part List F = 5 3/6 inches No Price No Price H Type B L E Wt H Type B L E Wt..3 65V.. /6 B SD 3/6 3 5/ V.65. /6 B SD 3/6 3 5/ V /8 B SD 3/ V /8 B SD 3/ V /8 B SD 3/ V5.9. B SK / V B SK / V /6 B SF 5/ V /6 B SF V /6 B SF 3/ V /6 B SF.8 85V /6 B SF 3/ V /6 B E 5/8 /.3 85V8. 6. /6 B E 5/8 / V /6 B E 5/8 / 7. 85V /6 B E 5/8 / V9.. 9/6 B E 5/8 / V /6 B E 5/8 / V9.5. 9/6 B E 5/8 / 3. 85V /3 B F 3 5/8 5/ V /6 B E 5/8 / V /3 B F 3 5/8 5/ V /6 W E 5/8 / 3. 85V.3 3. /3 B F 3 5/8 5/ V /6 W E 5/8 / V /3 B F 3 5/8 5/ V /6 W E 5/8 / V /3 W F 3 5/8 5/ V /6 W E 5/8 /. 85V /3 W F 3 5/8 5/ V /3 W F 3 5/8 9/ V /3 W F 3 5/8 5/ V /3 W F 3 5/8 9/ V3.. /3 W F 3 5/8 5/ V /3 W F 3 5/8 9/ V. 8. /3 W F 3 5/8 5/ V5.. 7/3 A F 3 5/8 9/ V /3 A F 3 5/8 5/ V /3 A F 3 5/8 9/ V6. 6. /3 A F 3 5/8 5/ V /3 A F 3 5/8 3/ V /3 A J 3/3.. 65V /3 6A F 3 5/8 / V /3 6A J 7/ V /3 6A J 3/ V /3 A J 5/ V /3 6A J 3/ V8.. 7/3 6A J 7/ V /3 6A J 3/ V3.5. 7/3 A M 6 3/ 5/ V /3 6A J 3/ V /3 5A M 6 3/ / V5.. 3/3 5A M 6 3/ 9/ V5.. 7/3 5A M 6 3/ 3/3 66 Note: MNPW bushings are standard mounting only. See page 8 O.D. Datum Dia. Part No List Price GROOVES F = 7 3/6 inches H Type B L E Wt V /6 B E 5/8 3/ V /6 B E 5/8 3/ V /3 B F 3 5/8 7/ V /3 B F 3 5/8 7/ V /3 B F 3 5/8 7/ V /3 B F 3 5/8 7/ V /3 B F 3 5/8 7/ V.3. 3/3 B F 3 5/8 7/ V /3 W F 3 5/8 7/ V /3 W J 9/ V /3 W J 9/ V. 6. 5/3 W J 7/ V /3 W J 7/ V /3 A J 7/ V /3 A J 7/ V /3 A J 7/ V3.6. 7/3 A M 6 3/ 7/ V /3 A M 6 3/ 7/ V /3 A M 6 3/ 7/ V /3 A M 6 3/ 7/ V /3 A M 6 3/ 5/3 556 P.D. for 5V Belts same as O.D. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 5

46 8V SECTION O.D. Datum Dia. GROOVES 5 GROOVES Part List F = inches Part List F = 6 inches No Price No Price H Type B L E Wt H Type B L E Wt.5.3 8V.5 5. /3 6W F 3 5/8 9/ V /6 W F 3 5/8 5/ V /3 6W F 3 5/8 9/ V /6 W F 3 5/8 5/ V. 56. /3 6W F 3 5/8 9/ V. 66. /6 W F 3 5/8 5/ V /3 6W F 3 5/8 9/3 7 58V /3 W F 3 5/8 9/ V /3 6A F 3 5/8 9/3 8 58V /3 A F 3 5/8 9/ V7. 7. /3 A F 3 5/8 7/ V /3 A J 9/ V /3 A F 3 5/8 7/3 5 58V /3 A J 9/ V /3 6A F 3 5/8 9/3 3 58V /3 A J 9/ V. 8. 3/3 A J 9/3 5 58V /3 A J 9/ V. 8. 3/3 A J 9/3 3 58V. 5. 9/3 A J 9/ V /3 A J 9/3 5 58V. 3. 5/6 A M 6 3/ / V /3 5A M 6 3/ /3 7 58V /6 A M 6 3/ / V /3 5A M 6 3/ /3 3 58V /6 A M 6 3/ / V /3 5A M 6 3/ / V /6 A M 6 3/ / V /3 5A M 6 3/ / V.. 5/6 A M 6 3/ / V /3 5A M 6 3/ /3 3 58V A N 8 /8 5/ V /3 5A M 6 3/ /3 5 58V A N 8 /8 5/ Note: MNPW bushings are standard mounting only. See page 8 O.D. Datum Dia. 6 GROOVES 8 GROOVES Part List F = 7 /8 inches Part List F = 9 3/8 inches No Price No Price H Type B L E Wt H Type B L E Wt V /3 W F 3 5/8 3/ V /3 B J 7/ V /6 W F 3 5/8 7/ V3. 8. /3 B J 7/ V. 7. /6 W F 3 5/8 7/6 9 88V /3 W J 7/ V /3 W J 5/ V /3 W J 7/ V /3 W J 5/3 9 88V6.. 5/3 W J 3/ V /3 A J 5/3 5 88V7.. 9/3 W M 6 3/ / V8.. 5/3 A J 5/3 3 88V8.. 9/3 W M 6 3/ / V9.. 5/3 A J 5/3 6 88V9.. 9/3 W M 6 3/ / V. 9. 9/3 A M 6 3/ 9/ V. 8. 9/3 W M 6 3/ / V. 3. 9/3 A M 6 3/ 9/3 7 88V /3 W M 6 3/ / V /3 A M 6 3/ 9/3 5 88V /3 A M 6 3/ / V /3 A M 6 3/ 3/ V /6 A N 8 /8 / V /3 A M 6 3/ 3/3 9 88V /6 A N 8 /8 / V /6 5A N 8 /8 3/ V /6 A N 8 /8 / V.. 3/6 5A N 8 /8 3/6 88V. 6. 3/6 A N 8 /8 / V /6 5A N 8 /8 3/ V / A P 9 3/8 / V /6 5A N 8 /8 3/6 5 88V / A P 9 3/8 / V / A P 9 3/8 / V / 5A P 9 3/ V / A P 9 3/8 / V / 5A P 9 3/8 3 88V7.. A W 3/8 63 P.D. for 8V Belts same as O.D. QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) 6 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

47 8V SECTION O.D. Datum Dia. All dimensions are to closest fraction B : Bushing size For mounting instructions, see page 8 Suffix on type indicates construction: A = arms; B = block; W = web. GROOVES GROOVES Part List F = 5/8 inches Part List F = 3 inches No Price No Price H Type B L E Wt H Type B L E Wt.5.3 8V /3 B J 3/3 8 8V.5 8. /3 B M 6 3/ 5/ V3.. 5/3 B J 3/3 8 8V3.. /3 B M 6 3/ 5/ V /3 B J 3/3 6 8V. 6. /3 B M 6 3/ 5/ V5.. 9/3 B M 6 3/ 9/3 59 8V5.. /3 B M 6 3/ 5/ V /3 B M 6 3/ 9/3 96 8V6.. /3 B M 6 3/ 5/ V /3 W M 6 3/ 9/3 69 8V7. 8. /3 B M 6 3/ 5/ V /3 W M 6 3/ 9/3 8 8V8. 3. /3 B M 6 3/ 5/ V /3 W M 6 3/ 9/3 3 8V9.. 3/6 B N 8 /8 5 9/ V /3 W M 6 3/ 9/3 38 8V. 8. 3/6 W N 8 /8 5 9/6.. 8V.. 9/3 W M 6 3/ 9/3 3 8V /6 W N 8 /8 5 9/6.. 8V. 6. 3/6 A N 8 /8 3 5/6 8V. 6. 3/6 A N 8 /8 5 9/ V /6 A N 8 /8 3 5/6 63 8V /6 A N 8 /8 5 9/ V /6 A N 8 /8 3 5/ V / A P 9 3/8 / V / A P 9 3/8 76 8V / A P 9 3/8 / V / A P 9 3/8 87 8V. 5. / A P 9 3/8 / V.5 9. / A P 9 3/8 85 8V / A P 9 3/8 / V / A P 9 3/8 98 8V /8 A W 3/ V /8 A W 3/8 /8 3 8V /8 A W 3/ V /8 A W 3/8 /8 8V63.. 5/8 A W 3/ V /8 A W 3/8 /8 77 8V /8 A W 3/8 9 P.D. for 8V Belts same as O.D. Note: MNPW bushings are standard mounting only. See page 8 QD bushings is a registered trademark and manufactured by Maska under license. CAUTION: DO NOT use these gray cast iron sheaves with rim speeds in excess of 65 feet per minute. Note that the max. RPM indicated on the arm of the sheave is based on the 65 ft/min. limit, and doesn t take into consideration the need for dynamic balancing (two planes). Please refer to page 3 to verify the validity of dynamic balancing in your application. All operational PT products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards and good safety practice. (Refer to ANSI Standard B5.) BE SURE TO SPECIFY 7

48 TIMING PULLEY & HTD SPROCKET NOMENCLATURE Timing Pulley P8L758 P 8 L.75 8 Pulley Number of Teeth Pitch (belt) Belt Width Bushing HTD Sprocket P3M5SK in metric P 3 mm 5mm SK Pulley Number of Teeth Pitch (mm) (belt) Belt Width Bushing 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

49 MASKA S UNIQUE HUB DESIGN Our Timing Pulley is designed with a doubletapered hub that can be installed with our new Vecobloc SCL keyless bushing OR with a standard taperlock bushing.. FROM EITHER SIDE. The Vecobloc SCL bushing eliminates the use of a key which means perfect synchronisation AND not having to machine a keyway on the shaft. Product Features: Synchronized noslip transmission No lubrication required Compact design High efficiency Low maintenance, economical operations TIMING PULLEY L Pitch List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) K M H Min. Max. Diam. Sprocket Flange For Belts /, 5/6 & 3/8 wide /5 pitch (L37) Face width (F) = 9/6 Wt PL37PB PL37PB PL37PB PL37PB P5L37PB / / / / / 9/6 5/8 3/6 3/6 3/6 / / /* /* 5/6* 3/8* 7/6* P6L37PB P8L37PB PL37PB PL37PB PL37PB / / /3 /3 /3 /6 3/6 5/6 5/6 / / / / / * 9/6* /6* /6* 3/* PL37PB P8L37PB P3L37PB P3L37PB P36L37PB B 3B /3 /3 /3 7/6 7/6 /6 3/6 3/8 / / 5/6 5/6 5/6 3/6* 5/6* /6* 3/6* 3/6* PL37PB PL37PB PL37PB P8L37PB P6L37PB P7L37PB B 3B 3B 3B 3B 3B 7/6 7/6 7/6 7/6 7/6 7/6 5/6 5/6 5/6 5/6 3/8 3/8 3/6* 3/6* 3/6* 3/6* 3/6* 3/6* **P3L378 **P36L378 PL378 PL378 PL B B B B B 7/3 7/3 7/3 5/3 5/3 5/3 5/3 5/3 5/3 7/6 /3 /8 /8 /8 /8 / P8L378 P6L37 P7L B B B 7/3 7/6 7/6 5/3 63/6 63/6 9/3 3 3/3 /8 / / *Available from stock in min. plain bore. Max. bore is w/o keyway. (If keyway is used, reduce max. bore listed by twice the keyway depth.) ((Two hexsocket set screws 9 degrees are included in price of pulley.)) All dimensions are to closest fraction. **These parts are made of steel Suffix on type indicates construction: A= arms; B= block; W= web; F= flanges Weight for all items is approximate and includes the bushing. BE SURE TO SPECIFY 9

50 TIMING PULLEY Maska s Timing Pulley can be installed with a standard taperlock bushing..... or with our new Vecobloc SCL keyless bushing (See pages 5 for details & advantages) L Pitch List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange K M N H Min. Max. For belts wide 3/8 pitch (L5) Face Width (F) = 3/ Wt PL5PB PL5PB P3L5PB PL5PB P5L5PB /8 7/3 5/6 3/8 3/8 3/8 3/8 3/8 * *3/ *3/ * * P6L5PB P7L5PB P8L58 PL58 PL B F B F B F /3 /3 /3 5/3 5/3 5/3 9/6 3/3 * * /8 /8 / PL58 **PL5 P6L5 P8L5 **P3L B F B F B F B F B F /3 5/6 5/6 5/6 5/6 5/3 63/6 63/6 63/6 63/6 /6 9/3 9/6 9/6 3/ /8 / / / / P3L56 PL5 P8L5 P6L5 P7L5 P8L B F B F B F W W W FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS 5/6 7/6 7/6 7/6 7/6 /6 63/6 3/6 3/6 3/6 3/6 9/6 9/3 3 3/6 3 5/6 /6 /6 /6 /6 /8 /8 /8 /8 /6 * Available from stock in min. plain bore only. Max. bore is without keyway. (If keyway is used, reduce max. bore listed by twice the keyway depth.) ** These parts are made of steel Suffix on type indicates construction: A= arms; B= block; W= web; F= flanges All dimensions are to the closest fraction. Weight for all items is approximate and includes the bushing

51 TIMING PULLEY L Pitch NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Mounting with a Vecobloc SCL keyless bushing (see pages & 5 for details) List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange K M N H Min. Max. For Belts 3/ wide 3/8 pitch (L75) Face width (F) = Wt PL75PB P3L75PB PL75PB P5L75PB P6L75PB /8 7/3 5/6 3/8 3/8 3/8 3/8 *3/ *3/ * * * P7L75PB P8L758 PL758 PL758 PL B F B F B F B F 3/6 3/6 3/6 5/3 5/3 5/3 63/6 * /8 /8 /8 / P6L75 P8L756 P3L756 P3L756 PL B F B F B F B F B F 3/6 63/6 63/6 63/6 63/6 3/6 3 3/6 / /6 /6 /6 / P8L75 P6L75 P7L75 P8L B F W W W 3/6 3/6 3/6 5/3 3/6 3/6 3/6 9/6 3 5/6 /6 /6 /6 /8 /8 /8 / For Belts wide 3/8 pitch (L) Face width (F) = / P3LPB PLPB P5LPB P6LPB /3 5/6 3/8 3/8 3/8 *3/ * * * P7LPB P8L8 PL8 PL8 PL B F B F B F B F 5/3 5/3 5/3 9/3 5/3 5/3 5/3 63/6 * /8 /8 /8 / P6L P8L6 P3L6 P3L6 PL B F B F B F B F B F 9/3 9/3 9/3 9/3 5/6 63/6 63/6 63/6 63/6 3/6 / /6 /6 /6 / P8L P6L P7L P8L B F W W W 5/6 5/6 5/6 33/6 3/6 3/6 3/6 9/6 /6 /8 /8 /8 / * Available from stock in min. plain bore only. Max. bore is without keyway. (If keyway is used, reduce max. bore listed by twice the keyway depth.) All dimensions are to the closest fraction. Suffix on type indicates construction: A= arms; B= block; W= web; F= flanges Weight for all items is approximate and includes the bushing. BE SURE TO SPECIFY 5

52 TIMING PULLEY H Pitch List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange K M N H Min. Max. For Belts wide pitch (H) Face width (F) = / Wt *PH8 *P6H8 *P8H *PH B F B F B F B F 7/6 7/6 5/6 5/6 5/3 5/3 63/6 63/6 /8 /8 / / PH6 PH6 P6H P8H B F B F B F B F 9/3 9/3 5/6 5/6 63/6 63/6 3/6 3/6 /6 /6 /8 / P3H P3H57 PH57 P8H B F B F W F W F 5/6 33/6 33/6 33/6 3/6 9/6 9/6 9/6 /6 /6 /6 /8 /6 /6 / **P6H3 **P7H3 **P8H3 **P96H3 **PH W W W A A 5/8 5/8 5/8 5/8 5/8 3/3 3/3 3/3 3/3 3/3 9/3 5 9/3 5 9/3 5 9/3 5 9/3 3 / 3 / 3 / 3 / 3 / For Belts wide pitch (H5) Face width (F) = 3/ PH58 P6H58 P8H5 PH B F B F B F B F 63/6 63/6 5/3 5/3 5/3 5/3 63/6 63/6 /8 /8 / / PH56 PH5 P6H5 P8H B F B F B F B F 5/3 9/3 9/3 9/3 63/6 3/6 3/6 3/6 /6 /8 /8 / P3H5 P3H557 PH557 P8H B F B F W F W F 9/3 3/6 9/6 9/6 9/6 /8 /6 /6 / P6H53 P7H53 P8H53 P96H53 PH W W W A A 3/6 3/6 3/6 3/6 3/6 3/3 3/3 3/3 3/3 3/3 6 9/6 6 9/6 6 9/6 6 9/6 6 9/6 3 / 3 / 3 / 3 / 3 / * Face width (F) = 7/3 ** Face width (F) = /3 All dimensions are to the closest fraction. Suffix on type indicates construction: A= arms; B= block; W= web; F= flanges Weight for all items is approximate and includes the bushing. 5 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

53 TIMING PULLEY H Pitch Maska s Timing Pulley can be installed with a standard taperlock bushing..... or with our new Vecobloc SCL keyless bushing (See pages for details & advantages) List Number Diameters Dimensions (inches) Bore Range Part No Price Bushing of Pitch O.D. Type ($) Teeth I.D. Diam. Sprocket Flange K M N H Min. Max. For Belts wide pitch (H) Face width (F) = 9/3 Wt P6H8 P8H PH PH B F B F B F B F 9/6 9/6 9/6 5/3 63/6 63/6 63/6 /8 / / / PH P6H P8H P3H B F B F B F B F 7/6 7/6 7/6 7/6 3/6 3/6 3/6 3/6 /8 /8 /8 / P3H57 PH57 P8H3 *P6H B F W F B F W 33/6 33/6 5/6 5/6 9/6 9/6 3/3 3/3 /6 /6 3 / 3 / *P7H3 *P8H3 *P96H3535 *PH W W A A 5/6 5/6 9/6 9/6 3/3 3/ /6 7 /6 3/6 3/6 3 / 3 / 3 5/6 3 5/ For Belts 3 wide pitch (H3) Face width (F) = 3 5/6 P6H38 P8H3 PH3 PH B F B F B F B F 7/6 5/3 5/3 5/3 5/3 63/6 63/6 63/6 7/6 5/3 5/3 5/3 /8 / / / PH3 P6H3 P8H3 P3H B F B F B F B F /6 /6 /6 /6 3/6 3/6 3/6 3/6 /6 /6 /6 /6 /8 /8 /8 / P3H357 PH357 **P8H33 **P6H B F W F B F W 9/6 7/3 7/6 7/6 9/6 9/6 3/3 3/3 9/6 /6 /6 3 / 3 / **P7H33 **P8H33 **P96H33535 **PH W W A A 7/6 7/6 /8 /8 3/3 3/ /6 7 /6 3/6 3/6 3 / 3 / 3 5/6 3 5/ * Face width (F) = /3 ** Face width (F) = 3 3/8 All dimensions are to the closest fraction. Suffix on type indicates construction: A= arms; B= block; W= web; F= flanges Weight for all items is approximate and includes the bushing. BE SURE TO SPECIFY 53

54 HTD SPROCKET HTD synchronous belt drives combine the positive timing action of gears with the flexibility, speed and low noise level of belts. Maska HTD sprockets are manufactured in various sizes, dimensions and capacities to meet industry requirements from speeds as low as RPM to speeds over 5, RPM and horsepower ratings from fractional to more than 5 HP. NEW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Product Features Positive, nonslip drive Clean operation No lubrication necessary Longlife Nonstretch Low maintenance Corrosion & abrasion resistant Quiet; no metaltometal contact Smooth operation: no chain drive that results in vibration and speed variation 8 mm Pitch The synchronous sprockets detailed in the tables below are all stock sizes. All dimensions include the sprocket with the QD bushing in place and are in inches. List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange E K L M Min. Max. For Belts 3/ (mm) wide 8mm pitch (8M) Face width (F) = /8 Wt *P8MJA P68MJA *P88ML P38ML P38ML JA JA L L L B F B F B F B F B F 5/8 5/8 5/6 5/6 3/3 7/3 /3 /3 /3 7/3 7/3 5/6 / / P38MSH P368MSH P388MSH P8MSH P8MSDS P88MSDS SH SH SH SH SDS SDS B F B F B F B F B F B F / / / / 5/6 5/6 3/8 3/8 3/8 3/8 3/8 3/8 / / / / 5/6 5/6 /8 /8 /8 /8 /8 /8 /6 /6 /6 / P568MSDS P68MSDS P78MSDS P88MSDS P98MSDS SDS SDS SDS SDS SDS W F W F W F W F W 5/6 5/6 5/6 5/6 5/6 3/8 3/8 3/8 3/8 3/8 5/6 5/6 5/6 5/6 5/6 /8 /8 /8 /8 / For Belts 3/6 (3mm) wide 8mm pitch (8M3) Face width (F) = *P8M3JA P68M3JA *P88M3L P38M3L P38M3L P38M3SH JA JA L L L SH B F B F B F B F /6 /6 /6 /8 3/ 3/ /3 /3 /3 / 7/3 7/3 3/3 /8 / / / P368M3SH P388M3SH P8M3SH P8M3SDS P88M3SDS SH SH SH SDS SDS /8 /8 /8 /6 /6 3/ 3/ 3/ 3/ 3/ / / / 5/6 5/6 /8 /8 /8 /8 /8 /6 /6 / P568M3SDS P68M3SK P78M3SK P88M3SK P98M3SK P8M3SK SDS SK SK SK SK SK W F B F W F W F W A /6 9/6 9/6 9/6 9/6 9/6 3/ / / / / / 5/6 /8 3/6 3/6 3/6 3/6 3/6 5/8 5/8 5/8 5/8 5/ * These parts are made of steel. Suffix on type indicates construction: A = arms; B = block; W = web; F = flanges All dimensions are to the closest fraction. Weight for all items is approximate and includes the bushing. 5 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

55 HTD SPROCKET 8 mm Pitch The synchronous sprockets detailed in the tables below are all stock sizes. All dimensions include the sprocket with the QD bushing in place and are in inches. List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange E K L M Min. Max. For Belts (5mm) wide 8mm pitch (8M5) Face width (F) = 3/8 Wt P88M5JA P38M5JA P38M5L P38M5SH P368M5SH P388M5SH JA JA L SH SH SH B F B F B F /3 /8 /8 /8 /3 / / / /6 / / / / / /6 /6 / P8M5SH P8M5SD P88M5SD P568M5SK P68M5SK SH SD SD SK SK B F B F B F B F W F /8 /8 /8 / / 9/6 9/6 9/6 9/6 / 3/6 3/6 / /6 /6 3/ 3/ /6 5/8 5/ P78M5SK P88M5SF P98M5SF P8M5SF P8M5E P98M5E SK SF SF SF E E W F W F W A A A / / / / /6 /6 9/6 9/6 9/6 9/6 3/8 3/8 5/8 5/8 3/ 5/8 5/8 5/8 7/6 7/6 5/8 5/6 5/6 5/ For Belts 3 5/6 (85mm) wide 8mm pitch (8M85) Face width (F) = 3 3/ P38M85SH P368M85SH P388M85SH P8M85SD P8M85SD SH SH SH SD SD /6 9/6 / / / / / 3/6 3/6 5/8 5/8 5/8 3/8 3/8 /6 /6 / P88M85SD P568M85SK P68M85SF P78M85E SD SK SF E /6 7/6 7/6 / / / /6 3/6 5/8 3/8 7/6 7/6 /8 5/8 5/ P88M85E P98M85E P8M85F P8M85F P98M85F E E F F F W W A A 9/3 9/3 9/3 /6 /6 5/8 5/8 5/8 5/8 5/8 3 5/8 3 5/8 3 5/8 /8 /8 3/3 3/3 3/ All dimensions are to the closest fraction. Suffix on type indicates construction: A = arms; B = block; W = web; F = flanges Weight for all items is approximate and includes the bushing. BE SURE TO SPECIFY 55

56 HTD SPROCKET mm Pitch The synchronous sprockets detailed in the tables below are all stock sizes. All dimensions include the sprocket with the QD bushing in place and are in inches. List Diameters Dimensions (inches) Bore Range Part No Price Bushing Number Type of Teeth Pitch O.D. Wt ($) I.D. E K L M Min. Max. Diam. Sprocket Flange For Belts (mm) wide mm pitch (M) Face width (F) = /8 P8MSK P9MSK P3MSK P3MSK P3MSK SK SK SK SK SK B F B F B F B F B F /6 /6 3/8 3/8 3/8 7/6 7/6 7/6 3/6 3/6 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/ P36MSF P38MSF PMSF PME P8ME SF SF SF E E B F B F B F B F B F 3/8 3/8 3/8 3/6 3/6 7/6 7/6 7/6 / / 5/8 5/8 5/6 5/6 5/6 5/6 5/ P5ME P56ME P6ME P6ME P68ME E E E E E B F B F B F W F W F 3/6 3/6 3/6 3/6 3/6 / / / / / 5/8 5/8 5/8 5/8 5/8 5/6 5/6 5/6 5/6 5/ P7ME P8ME P9ME PME PME E E E E E W F W F A A A 3/6 3/6 3/6 3/6 3/6 For Belts 3/6 (55mm) wide mm pitch (M55) Face width (F) = 3/ / / / / / 5/8 5/8 5/8 5/8 5/8 5/6 5/6 5/6 5/6 5/ P8M55SK P9M55SK P3M55SK P3M55SK P3M55SK SK SK SK SK SK B F B F B F B F B F /6 /6 /6 /6 /6 3/ 3/ 3/ 3/6 3/6 5/6 5/6 5/6 5/8 5/8 5/8 5/8 5/ P36M55SF P38M55SF PM55SF PM55E P8M55E P5M55E SF SF SF E E E B F B F B F B F B F B F /6 /6 /6 3/ 3/ 3/ 9/6 9/6 9/6 5/8 5/8 5/8 3/6 3/6 3/6 5/8 5/8 5/8 5/6 5/6 5/ P56M55E P6M55E P6M55F P68M55F P7M55F P8M55F E E F F F F B F B F W F W F W F W F /3 /3 /3 /3 9/6 9/6 /8 /8 /8 /8 5/8 5/8 3 5/8 3 5/8 3 5/8 3 5/8 5/8 5/8 7/3 7/3 7/3 7/ P9M55F PM55F PM55F P68M55F P9M55F P6M55F All dimensions are to the closest fraction F F F F F F Suffix on type indicates construction: A = arms; B = block; W = web; F = flanges Weight for all items is approximate and includes the bushing. FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS A A A A A A /3 /3 /3 /3 /3 /3 /8 /8 /8 /8 /8 /8 3 5/8 3 5/8 3 5/8 3 5/8 3 5/8 3 5/8 7/3 7/3 7/3 7/3 7/3 7/

57 HTD SPROCKET mm Pitch List Diameters Dimensions (inches) Bore Range Part N Price Bushing Number Type of Teeth Pitch O.D. ($) I.D. Diam. Sprocket Flange E K L M Min. Max. For Belts 3 5/6 (85mm) wide mm pitch (M85) Face width (F) = *P8M85SK *P9M85SK P3M85SK P3M85SK P3M85SK SK SK SK SK SK /6 3/6 9/6 9/6 9/6 3/8 3/8 3/8 5/6 5/6 9/6 9/6 9/6 5/8 5/8 5/8 5/8 5/8 Wt P36M85SF P38M85SF PM85SF PM85E P8M85E P5M85E SF SF SF E E E /6 9/6 9/6 /8 /8 /8 3/8 3/8 3/8 3/6 3/6 3/6 5/8 5/8 5/8 7/6 7/6 7/6 / / / 5/6 5/6 5/ P56M85F P6M85F P6M85F P68M85F P7M85F P8M85F F F F F F F B F B F B F W F W F W F 5/3 5/3 5/3 5/3 5/3 5/3 3/ 3/ 3/ 3/ 3/ 3/ 3 5/8 3 5/8 3 5/8 3 5/8 3 5/8 3 5/8 7/3 7/3 7/3 7/3 7/3 7/ P9M85F PM85F PM85F P68M85J P9M85J P6M85J F F F J J J A A A A A A 5/3 5/3 5/3 3/ 3/ 3/ 3/3 3/3 3/3 3 5/8 3 5/8 3 5/8 7/3 7/3 7/3 7/6 7/6 7/ For Belts (5mm) wide mm pitch (M5) Face width (F) = 5 / *P8M5SK *P9M5SK P3M5SK P3M5SK P3M5SK SK SK SK SK SK /6 3/6 3/6 3/6 3/6 3 3/6 3 3/6 3/6 3/6 3/6 5/8 5/8 5/8 5/8 5/ P36M5SF P38M5SF PM5SF PM5E P8M5E P5M5F SF SF SF E E F /6 3/6 3/6 3/ 3/ 5/3 3/6 3/6 3/8 5/8 5/8 3 5/8 /6 /6 /6 5/3 5/6 5/6 5/ P56M5F P6M5F P6M5J P68M5J P7M5J P8M5J F F J J J J B F B F B F W F 5/3 5/3 3/3 3/3 3/3 3/3 3/8 3/8 3 5/8 3 5/8 5/3 5/3 5/3 5/3 5/3 5/3 7/6 7/6 7/6 7/ P9M5J PM5J PM5J P68M5M P9M5M P6M5M J J J M M M W A A A A A 3/3 3/3 3/3 9/3 9/3 9/3 For Belts 6 /6 (7mm) wide mm pitch (M7) Face width (F) = 7 3/8 P36M7SF P38M7SF PM7SF PM7E P8M7E P5M7F SF SF SF E E F / / / 3/6 3/6 7/3 /6 /6 /6 3 /6 3 /6 3 /6 7/6 6 3/ 6 3/ 6 3/ 5/8 5/8 3 5/8 5/3 5/3 5/3 3/3 3/3 3/3 3 /8 3 /8 3 /8 5/6 5/6 7/3 7/6 7/6 7/ /6 5/6 5/ P56M7F P6M7J P6M7J P68M7J P7M7J P8M7J F J J J J J W F 7/3 3/3 3/3 3/3 3/3 3/3 7/6 /8 /8 /8 /8 /8 3 5/8 7/3 5/3 5/3 5/3 5/3 5/3 7/6 7/6 7/6 7/6 7/ P9M7J PM7M PM7M P68M7M P9M7M P6M7M J M M M M M * These parts are made of steel. Suffix on type indicates construction: A = arms; B = block; W = web; F = flanges All dimensions are to the closest fraction. Weight for all items is approximate and includes the bushing. BE SURE TO SPECIFY W A A A A A 3/3 7/3 7/3 7/3 7/3 7/3 /8 7/6 7/6 7/6 7/6 7/6 6 3/ 6 3/ 6 3/ 6 3/ 6 3/ 5/3 7/3 7/3 7/3 7/3 7/3 7/

58 JAWTYPE COUPLING Completely Interchangeable The most commonly used coupling for a wide variety of applications. Product Features: Economical Easy Installation Misalignment capability High torque capability No metaltometal contact types of insert materials Interchangeable by part number & size Jaw type couplings are designed for light to medium duty applications and are available stock in shaft sizes /8 to 5/8. Each coupling contains three components, namely hubs and one insert. The insert is available in materials, each suited to different applications, temperatures and environments. Insert materials are selected to offer maximum resistance to dirt, grease, oil, moisture and other ambient conditions. See page 59 for Insert Element Essentials. Coupling and Insert Elements Coupling Part No. List Price ($) (per flange) Insert Elements NBR (Rubber) Urethane Hytrel Bronze Part No. List Price Part No. List Price Part No. List Price Part No. List Price L35* () L5* () L L35N* () L5N* () L7N L35U L5U* () L7U L35H L5H* () L7H 8.. L35B L5B* () L7B L75 L9 L L75N L995N L995N L75U L995U L995U L75H L995H L995H 5... L75B L995B L995B L99 L L L99N L99N LN L99U L99U LU L99H L99H LH L99B L99B LB L5 L9 L L5N L9N L5N L5U L9U L5U L5H L9H L5H L5B L9B L5B *Important: NOT SOLD INDIVIDUALLY. These parts are packaged to a box. 58 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

59 JAWTYPE COUPLING Spider Inserts For torque horsepower ratings, please visit our web site at: Coupling Dimensions Part No. Type Outside Diameter A Hub Diameter HD Overall Length B Distances between Flanges C Length thru Bore D Set Screw Tightening Qty. Size & Length Torque in.lbs Min. Bore Max. Wt. Lbs (Avg.) Approx WR lbsin L35* L5* L7 5/8 /6 3/8 3/6 3/3 9/3 5/3 7/6 5/8 3/ #63 x /8 / x 3/6 / x / /8 (mm) 3/6 (5mm) 3/6 (7mm) 3/8 (8mm) 5/8 (6mm) 3/ (9mm) L75 L9 L95 3/ /8 /8 /8 9/6 33/6 33/6 33/6 3/6 3/6 / x 3/8 / x 3/8 5/68 x / /6 (9mm) 3/6 (9mm) 7/6 (mm) (mm) (5mm) /8 (8mm) L99 L L 7/3 7/3 3 5/6 7/3 3 5/3 / 3/3 3/3 /6 3/8 /6 5/68 x 3/8 5/68 x 3/8 3/86 x 5/ /6 (mm) 7/6 (mm) 5/8 (6mm) 3/6 (3mm) 3/8 (35mm) 5/8 (mm) L5 L9 L5 3 3/ 5 Insert Materials Accomodates Coupling L35 L5 L7 Max. RPM 3 8 / 5 / 6 3/ /8 3/86 x 3 x 3 x /8 (6mm) 3/ (9mm) 3/ (3mm) (8mm) /8 (55mm) 5/8 (65mm) Allowable Misalignment, inches (at 3,6 RPM or lower) NBR or Urethane Hytrel Bronze Parallel Angular Parallel Angular Parallel Angular L75 L9 L L99 L L L5 L9 L Maximum RPM for bronze spiders is 5 RPM regardless. Maximum speed for hytrel spiders sizes L7L is 3,6 RPM.. Angular misalignment is the difference between and max. (Refer to Figure above) BE SURE TO SPECIFY

60 JAWTYPE COUPLING Standard Bore and Keyway Chart Bore (in) /8 3/6 / / 5/6 Keyway (in) No KW No KW No KW /8 x /6 No KW L35 L5 L7 L75 L9 L95 L99 L L L5 L9 L5 For torque horsepower ratings, please visit our web site at: 3/8 3/8 3/8 7/6 7/6 No KW 3/3 x 3/6 /8 x /6 No KW 3/3 x 3/6 7/6 9/6 9/6 /8 x /6 No KW /8 x /6 No KW /8 x /6 5/8 5/8 5/8 /6 3/ No KW 5/3 x 5/6 3/6 x 3/3 3/6 x 3/3 No KW 3/ 3/ 3/6 /8 x /6 3/6 x 3/3 3/6 x 3/3 No KW 3/6 x 3/3 5/6 /6 / x /8 / x /8 / x /8 3/6 x 3/3 / x /8 /8 3/6 / / 5/6 / x /8 / x /8 / x /8 5/6 x 5/3 5/6 x 5/3 3/8 3/8 7/6 5/6 x 5/3 3/8 x 3/6 3/8 x 3/6 5/6 x 5/3 3/8 x 3/6 9/6 5/8 /6 3/ 3/ 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 7/6 x 7/3 3/6 5/6 /6 x / x / x / x / x / /8 3/6 / 3/8 5/8 x / x / x / 5/8 x 5/6 5/8 x 5/6 = Available = Price on Request 6 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

61 JAWTYPE COUPLING Insert Element Essentials Selecting the proper insert material is just as important as selecting the correct type and size of jaw coupling because of the role they play in the performance and maintenance of the product. NBR Hytrel Bronze Urethane Element Characteristics Properties NBR (Rubber) Nitrile Butadiene Rubber is an elastomeric element that is oil resistant with the resilience and elasticity of natural rubber. Most economical and widelyused element. Urethane Urethane has.5 more torque capability than NBR, provides less dampening effect and has good resistance to oil and chemicals. Not recommended for cyclic or startstop applications. Hytrel Hytrel is a pliant elastomer suited to high torque / temperature operations. Notable resistance to oil and chemincals Not recommended for cyclic or startstop applications. Bronze Bronze is a metal insert designed exclusively for slow speed operations that require high torque. (Maximum 5 RPM) Resistant to extreme environments (temperature, water, oil, dirt). Temperature Range to + F to + C 3 to +6 F 3 to +7 C 6 to +5 F 5 to C to +5 F to +3 C Misalignment Angular Degree Parallel Inch Shore Hardness Dampening Capacity Chemical Resistance Colour.5 8A HIGH GOOD BLACK.5 55D L5L 995A L5L5 LOW VERY GOOD ORANGE.5 55D LOW ECELLENT BEIGE. NIL ECELLENT GOLD Jaw Couplings Advantages Jaw design is considered failsafe if the insert element wears/breaks away, the coupling continues to operate until insert can be conveniently replaced. Simple design means easy installation, removal and visual inspection. Also greater radial softness, lighter weight and lower cost vs. torque capacity, quiet operations and easy replacement in the field. Insert Choice The choice of the insert element can make a significant difference in the couplings s performance with regards to vibration, temperature, chemicals, misalignment, high rpm, space limitations and installation/removal. Maintenance Tips Through manual inspection, avoid allowing the jaw tips to come into contact; a noisy, grinding operation will result. Do not hesitate to replace the insert if signs of wear are evident. Do not overestimate service factors when choosing the coupling / insert. This increases costs unnecessarily and can cause damage elsewhere in the drive. Due to the variety of inserts available, careful selection will result in efficient, longlasting operations BE SURE TO SPECIFY 6

62 MASKAFLE ELASTOMERIC ELEMENT COUPLINGS SOLVE PROBLEMS OF: MISALIGNMENT END FLOAT SHOCK LOADS OFFERING: QUICK INSTALLATION LOW MAINTENANCE TROUBLE FREE PERFORMANCE Flexible elastomeric element Easy to Assemble 6 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

63 MASKAFLE COUPLINGS ELASTOMERIC ELEMENT STANDARD TIRE IN NATURAL RUBBER The standard unit normally supplied is designed for temperatures between C and + 8 C. Max. angular misalignment: Max. axial misalignment: see Table, page 6 Max. parallel misalignment: see Table, page 6 HOW TO ORDER YOUR COUPLING PREFI SIGNIFICATIONS M Complete coupling = flanges bushtype + tire MF flange only bushtype P Tire only (Element) BE SURE TO SPECIFY 63

64 Cross References MASKAFLE COUPLINGS MASKAFLE Maska HIFLE Maurey *PARAFLE Dodge MARTINFLE Martin M5JA 5JA P5 F5 JA M6SH 6SH P6 F6 JA M7SDS 7SH P7 F7 SH M8SK 8SDS P8 F8 SDS M9SK 9SK P9 F9 SK MSF SF P F SF MSF SF P F SF ME E P F E MF E P N/A M6J N/A P6 N/A MJ N/A P N/A * Paraflex Couplings are designed for use with taperlock bushings. 6 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

65 MASKAFLE COUPLINGS CAPSCREW TORQUE M5JA /UNC x 96 inlbs M6SH /UNC x / 96 inlbs M7SDS 5/68UNC x 5 inlbs M8SK 5/68UNC x 5 inlbs M9SK 3/86 x 3/ 36 inlbs MSF 3/86 x 3/ 36 inlbs MSF 3/86 x 36 inlbs ME 3UNC x / 9 inlbs MF 3UNC x 9 inlbs M6J 5/8UNC x 3 Grade 8 8 inlbs MJ 5/8UNC x Grade 8 8 inlbs Complete List price w/o Bushing Stock bores Dimensions (inches) Weight lbs Coupling Complete Tire Flange Type Com Part No Coupling only only Min. Max. A B C D E F G plete Flange Tire M5JA** / 5 / 3 5/6 3 3/ 3 9/6.96 * 9/ M6SH /6 6 9/6 /3 /8.8 * 5/ M7SDS /8 7/3 5/6 /8.5 * M8SK /8 8 3/8 5 3/6 5 7/3 5 /.5 * M9SK /8 9 / 5 3/6 5 5 /.53 *... MSF /6 6 3/6 5 3/6 5.7 * MSF / /6.56 * 3/ ME /8 7 / * / MF : /8 9 9 /6 8 5/8.6 * 3/ M6J /6 6 5/8 3/8.69 * 3/ MJ /6 3/ 5/6 3/6 3.3 * 3/ Note: * Shaft ends although normally G distance apart can project beyond the bushings and be closer together. If this occurs, allow space between shaft ends for endfloat and misalignment. ** The M5JA coupling could only be outsideoutside mount. BE SURE TO SPECIFY 65

66 MASKAFLE COUPLINGS SERVICE FACTORS TO USE FOR MASKAFLE COUPLINGS TYPE OF DRIVING UNIT Internal combustion engine; to 3 cylinders, with irregularity factor from 8 to %. Internal combustion engine; to 6 cylinders, with irregularity factor from to %. Electrical motor. TYPE OF LOAD TYPE OF DRIVEN MACHINE Regular load Agitators Conveyors Centrifugal compressors Dynamo meters Air filters.5. Generators Shaftline Centrifugal pumps Centrifugal fans Moderate Agitators Hoisting equipment Bucket elevators Textile machines Machine tools.5..5 overload Timber machinery Mixers Rotary pumps Printing presses Winches Mine fans Substantial Hoisting equipments Bar Grinders Crushers Rotary compressors Dredgers.5 3. overload Calenders Rotative furnaces Print presses Cutting presses Desanding drums High inertia Rotative crushers Reciprocating conveyors Vibrating screens Surges Reciprocating compressors Rubber mixers Rolling mills Reciprocating pumps Torque or rotation inversions SELECTION EAMPLE To choose a coupling for the connection of a 5 HP electric motor at 75 RPM, and a service factor. ) Necessary power at rpm: 5 =.3 HP/ RPM (R.P.M. of driver shaft) ) Refering to table and using.3 HP/ RPM, we can select the required coupling at various service factors. Table : Maskaflex Main Features and Selection Guide Torque* Average static HP per torsional stiffness Coupling Stock bores Max Service factors. S.F. coefficient (H) WR No. Min. Max. RPM (LB in) LBlN/DEG. LBIN/RAD. (LBFT ) M5JA / ,85.8 M6SH 5/ ,8 3,7. M7SDS 5/ , 5 3,.5 M8SK , ,.88 M9SK ,35,88 6,.6 MSF 3/ ,5,53 87,7.9 MSF 3/ ,75, 38,7.3 ME 3 7/ ,5, 7, 6.7 MF 3 5/ ,59 8,96 76, 9.5 M6J 7/ ,8, 688, 3.6 MJ 7/ ,5 9,,66, 3. Max. parallel misalignment Max. axial misalignment 3/6 /6 /6 5/6 5/6 3/3 5/6 7/6 3/3 /8 7/6 /8 7/6 9/6 /8 5/3 9/6 3/6 /6 3/6 3/6 7/6 * To obtain the maximal torque, multiply by.5 the nominal torque. (Tork tire) 66 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

67 COUPLING SELECTION 859 RPM MOTORS 5 RPM MOTORS Smallest coupling to accomodate motor shaft for 956 and T frame Smallest coupling to accomodate motor shaft for 956 and T frame MOTOR COMPUTER SERVICE FACTOR MOTOR COMPUTER HP/RPM HP/RPM SERVICE FACTOR HP FOR 86 RPM MOTOR HP FOR 6 RPM MOTOR /8.5 /. /.9 /3.9 / *5JA *5JA *5JA *5JA *5JA 3/.65 *5JA *5JA *5JA *5JA *5JA 3/.87 *5JA *5JA *5JA *5JA *5JA.86 *5JA *5JA *5JA *5JA *5JA.6 *5JA *5JA *5JA *5JA *5JA.9 *5JA *5JA *5JA *5JA *5JA.7 *5JA *5JA *5JA *5JA *5JA.7 *5JA *5JA *5JA *5JA *5JA.3 *5JA *5JA *5JA *5JA *5JA 3.59 *5JA *5JA *5JA *5JA *5JA 3.39 *5JA *5JA *5JA *5JA *5JA 5.3 *5JA *5JA *6JA *5JA *5JA 5.58 *5JA *5JA *5JA 6SH 6SH 7.67 *5JA *5JA *5JA 6SH 6SH 7.87 *5JA *5JA 6SH 6SH 6SH.86 *5JA *5JA 6SH 6SH 6SH.6 *5JA 6SH 6SH 7SDS 7SDS 5.9 *5JA 6SH 6SH 7SDS 8SK 5.7 6SH 6SH 7SDS 8SK 8SK.7 6SH 6SH 7SDS 8SK 8SK.33 6SH 7SDS 8SK 9SK SF 5.6 6SH 7SDS 8SK 8SK 9SK 5.9 7SDS 8SK 9SK SF SF SH 8SK 8SK 9SK SF SDS 8SK SF SF SF 3.5 7SDS 8SK 9SK SF SF.65 8SK SF SF SF E 5.3 8SK 9SK SF SF E SK SF SF E E SK SF SF E E SF SF E E F SK SF E E E SF E E F F 8.6 SF E E F F.63 SF E F F F 5.78 SF E F F F 758 RPM MOTORS 3536 RPM MOTORS Smallest coupling to accomodate motor shaft for 956 and T frame Smallest coupling to accomodate motor shaft for 956 and T frame MOTOR COMPUTER SERVICE FACTOR MOTOR COMPUTER HP/RPM HP/RPM SERVICE FACTOR HP FOR 75 RPM MOTOR HP FOR 35 RPM MOTOR *5JA *5JA *5JA *5JA *5JA. *5JA *5JA *5JA *5JA *5JA.86 *5JA *5JA *5JA *5JA *5JA.57 *5JA *5JA *5JA *5JA *5JA. *5JA *5JA *5JA *5JA *5JA 3.86 *5JA *5JA *5JA *5JA *5JA 3.7 *5JA *5JA *5JA *5JA *5JA 5.3 *5JA *5JA *5JA *5JA *5JA 5.86 *5JA *5JA *5JA *5JA *5JA 7. *5JA *5JA *5JA *5JA *5JA 7.9 *5JA *5JA *5JA *5JA *5JA.86 *5JA *5JA *5JA *5JA *5JA.57 *5JA *5JA *5JA *5JA *5JA 5.9 *5JA *5JA *5JA *5JA *5JA *5JA *5JA 6SH 6SH 6SH.57 *5JA *5JA *5JA *5JA 6SH. *5JA 6SH 6SH 6SH 7SDS 5.7 *5JA *5JA *5JA 6SH 6SH 5.3 *5JA 6SH 6SH 8SK 8SK *5JA *5JA 6SH 6SH 6SH 3.7 6SH 6SH 7SDS 8SK 8SK. *5JA 6SH 6SH 7SDS 7SDS.8 6SH 7SDS 8SK 8SK 9SK 5.8 *5JA 6SH 6SH SH 8SK 8SK SF SF 6.7 6SH 6SH 7SDS SDS 8SK 9SK SF SF 75. 6SH 7SDS SK 9SK SF SF E.86 6SH 5.7 8SK SF SF E E SF SF E E F SF E E F F.3 SF E F F F 5 Note: Bushing sizes shown above may not always have shaft size capacity capabilities. *#5JA MASKAFLE couplings are outsideoutside mount only. Maska Flex Couplings are balanced to meet general industrial applications. Applications with a speed superior to 5, ft./min. may require more accurate balancing. BE SURE TO SPECIFY 67

68 Blue Flex VBelts VBelt Tension Tester NOW AVAILABLE Proper tension & installation can lengthen belt life & lesson expensive downtime. See page 8 68 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

69 VBELTS CROSS SECTION NOMINAL DIMENSIONS A Section Multiple VBelts (inch Top Width, 5/6inch Thick) A8 $.. A9.. A.. A.6. A.6.5 A3.. A.3. A5.. A6.. A7.56. A8.8. A9.96. A3.. A3.. A3.36. A33.6. A3.76. A35.. A36.. A37.. A38.8. A A A 3.. A 3.6. A3..3 A.8.3 A5..3 A6..3 A7.6.3 A8.8.3 A A A5 $5..3 A A A A A A A A A A A A A A A A A A A7 9.. A A7 9.. A A A75.. A76.3. A77.8. A78.8. A79.. A8.6. A8.. A8.. A A8 $.8. A A A A88.6. A89.. A9.8. A A A A A A A A A A A A 8..5 A A A A A A (A9) A 3..7 (A) A 3..8 (A3) A A A A8 $ (A9) A 3..8 A (A5) A A (A3) (A33) A (A35) A (A37) (A)..95 A.. (A8).3. (A5) A56.6. (A57).9. A (A6) 5.6. (A6) 6.. (A67) A A (A87) 5.. (A96) 5..3 (A97) (A) A (A56) (A58) Up to Inside length plus inches equals outside length. ( ) = Not in stock. Contact Maska for price and delivery BE SURE TO SPECIFY 69

70 (B) $.. (B).. B.. B3.. B.. B5.8. B6 5.. B7 5.. B8 5.. B B3 5.. B B B B B B B B B B 8.3. B 8.. B 9.. B3 9.. B 9.. B5.. B6.8.5 B7.9.5 B8.6.5 B B5..5 B5..5 B5.8.5 B B B B B B B B6..6 B B Section Multiple VBelts (/3inch Top Width, 3/3inch Thick) (C3) $3..8 (C3) 3..8 (C8) C C C C C55.. C6 3.. C C6.6. C (C65) 6.7. C C C C C C C C C C B6 $.8.7 B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B 39.. Up to Inside length plus 3 inches equals outside length. C83 $59..3 C C C C C C C C C C C C 7..9 C 7..9 (C) C (C6) (C7) (C8) C C (C) C 8.. B5 $.. B6.8. B7.. B8.36. B9.8. B.3. B.76. B 3.. B B.. B5.6. B6.. (B7).7. B8 5.. B B 5.6. B 6.. B 7.. B5 7.. B6 8.. B7 8.. B B B B B B B B B B 53.. B (B) 5.. (B3) 5.7. B 55.. B B B (B9) B B B B (C) $8.6. C C C8 8.. C C 87.. C 88.. (C6) C C C C (C38) 98.. (C39) (C) (C).3. (C).. (C3).7. C.. (C6) C8.6.6 C C B5 $ (B55) B B B B (B6) 6..5 B B (B6) B (B66) B (B69) (B7) B B B B B B B (B85) B (B88) B B B B (B97) 75.. B B B (B5) 78.. B 8.. B (B5) (B6) B (B8) B 8..5 B B (C53) $8..6 C5..7 C58..7 C6..7 C C (C69) C (C75). 3. (C76).8 3. C (C85) (C88) C (C9) C (C) C (C7) C C (C) (C7) B5 $85..3 (B8) (B9) (B3) (B3) (B35) (B36) (B37) (B39) B 9..3 B B (B55) (B59) (B65).8.3 B7..3 (B76)..7 (B79).8.7 (B85) 6..7 (B9) 9..7 (B9).58.7 (B93).96.7 (B3) (B35) 9..9 B (B333) 6..9 B (B355) B (B39) (B33) (B7) 9.8. ( ) = Not in stock. Contact Maska for price and delivery. C Section Multiple VBelts (inch Top Witdh, 7/3inch Thick) Up to Inside length plus inches equals outside length. (C8) $ (C) C C (C35) (C38) C (C5) C (C55) C C (C85) C C (C33) (C3). 5.6 (C35). 5.6 C C C (C39) (C) ( ) = Not in stock. Contact Maska for price and delivery. FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

71 Oil and heatresistant. Static dissipating. RMA multiple Vbelts in a raw edge, cogged construction are especially useful for high speed, compact drives. MASKA COGGED RAW EDGE Raw edge, cogged multiple Vbelts are listed by industry number in which the first letter indicates belt section, the is a cogged construction and the number is belt inside length in inches. A Section Cogged Multiple VBelts (inch Top Width, 5/6inch Thick) (A) $.8.7 A3.8.7 A.8.7 (A5).8.8 A6.8.8 (A7).8.9 A8.8.9 A9.8. A3.8. A3.. A3.8. A A A35.. C5 $ C (C67) C (C7) 3..7 C (C76) (C78)..59 (C8) 5..6 C (C8) A36 $.8. A A A A A 7..7 A A A 8..3 (A5) A (A7) 9..3 A (A9) Inside length plus inches equals outside length. (C83) $8..68 C85..7 (C88) C (C9) (C9) (C95) C (C98)..97 (C) 3.8. (C3) Up to Inside length plus inches equals outside length. A5 $ A (A5) A A A A (A58) (A59) 33.. A A6 3.. A6 3.. A A C5 $5.. (C7) 53.. C (C) 57.. C 6.. C C (C3) C8 8.. C C (A65) $ A A A (A69) A A (A7) A75..9 (A76).6.5 (A77).8.5 A A (A8) B93 $7.. B B B B B B B5 8.. B B 86.. (B3) 87.. (B5) B B 9..3 B 9..3 B B33..3 B B..5 C $.8.63 C C58..9 C C (C8) (C87) (C9) C (C) * 3.77 (C5) *. ( ) = Not in stock. Contact Maska for price and delivery. A85 $6..55 A A A (A99) 5..6 A A (A8) A A A A A B Section Cogged Multiple VBelts (/3inch Top Width, 3/3inch Thick) B3 $3..36 B (B33) B B B B B B B B B B (B)..5 B5.8.5 B6.6.5 B7..53 B B B5 $.6.56 B B B B B B B B B B B B B B B B B B Up to Inside length plus 3 inches equals outside length. (B69) $ B B B (B7) B (B76) B B B B B B B B B B (B9) (B9) 7.. ( ) = Not in stock. Contact Maska for price and delivery. ( ) = Not in stock. Contact Maska for price and delivery. C Section Cogged Multiple VBelts (inch Top Width, 7/3inch Thick) B5 $.56.5 B B B B B (B) *. (B5) *.5 (B) *.36 (B7) *.66 (B3) *.95 (C) *.3 (C55) *.58 (C7) *.85 (C3) * 5.39 (C33) * 5.93 (C36) * 6.7 BE SURE TO SPECIFY 7

72 Oil and heatresistant. Static dissipating. A more narrow, deeper wedge shape with more efficient load carrying characteristics and higher power capability that allows for smaller, more compact drives. These belts are conform to RMA Engineering Standard IP. Stock Maska deep wedge Vbelts are listed below. Inbetween lengths and lengths over 6 inches are available on special order. MASKA DEEP WEDGE VBELTS Deep wedge Vbelts are identified by a number and letter specifying the belt section and a number giving the outside length in inches multiplied by. For example: 3V5. 3V Section Deep Wedge VBelts (3/8inch Top Width, 5/6inch Thick) 3V5 $5.6. 3V V V V V V V V.. 3V5 $.. 3V5.. 3V V V53.. 3V V V (3V65) V67 $8..3 3V (3V73) V V V V V V95.. 3V $.8. 3V V V V V V V Section Deep Wedge VBelts (5/8inch Top Width, 7/3inch Thick) 5V5 $9..6 5V V V (5V63) V V V V V V9 $ V (5V975) V 98.. (5V).. 5V6.. 5V.. 5V V V V $ V V (5V63) V (5V7) V V V V.6. (5V5) $.7.8 5V..7 5V V (5V65) V V (5V35) (5V335) (5V355) V Section Deep Wedge VBelts (inch Top Width, inch Thick) (8V) $ (8V6) (8V) V8.. 8V V V V V (8V65) $ V V V V V V (8V3) V V5 $ (8V55) V V V V (8V33) V V (8V36) $ (8V375) (8V) (8V5) (8V5) (8V75) (8V5) (8V56) ( ) = Not in stock. Contact Maska for price and delivery. 7 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

73 Oil and heatresistant. Static dissipating. A raw edge, cogged construction further increases the effective power transmission of deep wedge Vbelts. These cogged deep wedge Maska Vbelts, need no belt set matching. Stock raw edge, cogged deep wedge Vbelts are listed below. MASKA COGGED RAW EDGE DEEP WEDGE VBELTS Cogged deep wedge Vbelts are specified by the section numberletter with an to indicate cogged construction. The number following is the belt s outside length in inches multiplied by. For example: 5V9. 3V Section Cogged Deep Wedge VBelts (3/8inch Top Width, 5/6inch Thick) 3V5 $5.6. 3V V8 6.. (3V9) V V V V V V39 $.. 3V.. 3V5.. 3V5.. 3V V V V53.. 3V V6 $6..3 3V (3V65) V V V V V V V95 $.. 3V.8. 3V V V V V V V Section Cogged Deep Wedge VBelts (5/8inch Top Width, 7/3inch Thick) (5V7) $9..6 5V V V (5V57) V V V V V V68 $ V V V V (5V78) V V V V (5V96) 9.. 5V $98.. (5V3).. 5V6.. (5V8).. 5V..3 (5V5) 3.. 5V V V V V $ V V V V V V 99.. ( ) = Not in stock. Contact Maska for price and delivery. BE SURE TO SPECIFY 73

74 L FHP VBelts (inch Top Witdh, 5/6inch Thick) L7 $9.9. L L L 9.9. L L 9.9. L L 9.9. L L6.8.6 L7..6 (L75) P.O.R..6 L8..7 (L85) P.O.R..7 L (L95) P.O.R..7 L3.7.8 L (L35) P.O.R..9 L3..9 L33.. L3.. L35.6. L36 $.8. L37.. L38..3 L L.8. (L5) P.O.R.. L 3..5 L 3..5 L L L5..7 L6.6.8 L7.3.8 (L75) P.O.R..8 L8..9 L L5.7.3 L L L L L (L555) P.O.R..33 L56 $ L L L L L L L L L L L L L L7 8.. L L L L L L L77..6 L L79 $.6.8 L L8.8.9 L8.6.9 L L8..5 L L L L L L9.6.5 L L L L L L L L L L Outside length minus inches equals inside length. P.O.R. = Price on request ( ) = Not in stock. Contact Maska for price and delivery. 5L FHPBelts (/3inch Top Witdh, 3/8inch Thick) 5L $.8.5 5L L.6.5 5L L L5 P.O.R.. 5L $8.. 5L L L L6 $ L L L L L8 $3..8 5L L L L L L L L L L L7..6 5L8..7 5L L5..9 5L L L L L L L L L L L3..3 5L L L L L5..5 5L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L Outside length minus 3 inches equals inside length. P.O.R. = Price on request ( ) = Not in stock. Contact Maska for price and delivery. NOTE: Maska do not recommand the use of two or more L or 5L belts on the same drive as their length may not match perfectly. 7 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

75 CURVILINEAR SYNCHRONOUS BELTS (H.T.B.) Oil, heat and abrasionresistant The standard trapezoidal tooth timing belt design performs poorly in high torque applications and high power drives at lower speeds. To overcome this disadvantage the curvilinear belt was developed using a more efficient tooth profile. Our stock 8mm and mm curvilinear synchronous belts are listed below. Nonstandard lengths in these pitches are also available, as are belts with 3mm and 5mm pitch. Curvilinear synchronous belts are specified by tooth profile and belt pitch length, tooth pitch and belt width in millimeters. For example: 7 8M 3 (Belt Pitch Length) (Tooth Pitch) (Belt Width) (mm) (mm) (mm) A. A highmodulus fiberglass cord is wound across the entire width of the belt pitch line insuring minimal stretch and resistance to repeated flexing. B. The body is a synthetic neoprene compounded to resist flex fatigue, heat, ozone, mineral lubricating oils and aging. C. A tough nylon fabric is bonded to the tooth surface for wear resistance. Among the advantages are: Higher torque transmission at low speeds High power transmission over a wide speed range Improved meshing to reduce tooth jump Higher resistance to tooth shear Less tooth wear due to friction 8mm Curvilinear Synchronous Belts Width(mm) Belt Profile, Length No. Approx & Pitch of List Weight List Weight List Weight List Weight Code Teeth Price (lbs.) Price (lbs.) Price (lbs.) Price (lbs.) 3768M 7 $5.56. $36..6 $57..7 $ M M 59 P.O.R.. P.O.R.. P.O.R..33 P.O.R M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M 5 P.O.R..3 P.O.R.. P.O.R..7 P.O.R..3 8M P.O.R. = Price on Request mm Curvilinear Synchronous Belts Width(mm) Belt Profile, Length No. Approx Approx Approx Approx Approx & Pitch of List Weight List Weight List Weight List Weight List Weight Code Teeth Price (lbs.) Price (lbs.) Price (lbs.) Price (lbs.) Price (lbs.) 966M 69 $87..8 $5..5 $ $8.. $ M M M M M M M M M M M M M M M M BE SURE TO SPECIFY 75

76 TRAPEZOIDAL SYNCHRONOUS BELTS (Timing) Oil, heat and abrasionresistant Stock trapezoidal synchronous belts are listed below. They have fiberglass tension members and neoprene body with nylon covered teeth, all bonded together for maximum strength. For nonstock widths, specified widths from our large supply of belt sleeves are available on special order. Minipitch ML (.8inch pitch) trapezoidal synchronous belts are also available; they are specified by belt length in inches times, belt pitch code and a threedigit belt width code which is the decimal inchwidth multiplied by. A sample specification is shown below: L 75 Length Pitch Width (.inches) (3/8inch) (.75 inches) Extra Light /5inch (L) Pitch Trapezoidal Synchronous Belts Belt Length & Pitch Code 6L 7L 8L 9L L No. of Teeth List Price Width 37 (3/8 ) Weight (lbs.) L L 3L L L L 6L 7L 78L 8L L 9L L L L L L 5L 6L 7L 3L FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

77 TRAPEZOIDAL SYNCHRONOUS BELTS (Timing) Oil, heat and abrasionresistant Light 3/8inch (L) Pitch Trapezoidal Synchronous Belts Heavy inch (H) Pitch Trapezoidal Synchronous Belts Width 5 ( ) 75 (3/ ) ( ) Belt Length No. Approx & Pitch of List Weight List Weight List Weight Code Teeth Price (lbs.) Price (lbs.) Price (lbs.) L L L L L L L L L L L L L L L L L L L L L L L..5. L L L L L L L L L L L L L..3. Width 75 (3/ ) ( ) 5 ( ) ( ) 3 (3 ) Belt Length No. Approx Approx Approx Approx Approx & Pitch of List Weight List Weight List Weight List Weight List Weight Code Teeth Price (lbs.) Price (lbs.) Price (lbs.) Price (lbs.) Price (lbs.) H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H = Price on Request = Price on Request BE SURE BE SURE TO SPECIFY TO SPECIFY 77

78 BELT TENSIONING INSTRUCTIONS Synchronous Belts Hign torque, Standard and Metric synchronous belts should be installed to fit pulleys snugly, neither too tight nor too loose. The belt s positive grip eliminates the need for high initial tension. When a belt is installed with a snug but not overly tight fit, longer belt life, less bearing wear and more quiet operation will result. Overtight belts can cause early failure and should be avoided. With high torque a loose belt may jump teeth upon startup. If such occurs, the tension should be increased gradually until satisfactory operation is achieved. To properly tension a synchronous belt, place belt on pulleys and adjust takeup until the belt teeth mesh securely with the pulley grooves. Measure belt span T. Then tighten belt so that it deflects /6inch for every inch of belt span when a force as specified in the table below is applied to the top of the belt. For belts wider than two inches, a metal or wooden strip 3/ to inch wide should be placed across the belt between it and the tester to prevent distortion. The following range of deflection forces are normally adequate for drive installation. Actual installation tension required depends on peak loads, system rigidity, number of teeth in mesh, etc. VBelts & MultiRib Series Vbelt tensioning adjustment can be made using a tension meter or other type spring scale, using the following procedure. After seating the belts in the groove and adjusting center distance so as to take up slack in the belts, further increase the tension until only a slight bow on the slack side is apparent while the drive is operating under load. Stop the drive, and using the meter, measure the force necessary to depress one of the center belts /6inch for every inch of belt span (see sketch below). For example, a deflection for a 5inch belt span is 5/6ths, or 5/3inch. The amount of force required to deflect the belt should compare with the deflection forces noted in the chart below. Also notice for Vbelts that deflection forces vary from the initial runin values which are greater (reflecting higher runin tensioning) to the normal values for after the runin period. Span Length t Deflection /6 per inch of span Synchronous Belt Tensioning Deflection Force Table Belt Pitch Belt Width Deflection Force mm to lbs Synchron. 8MM 3mm 3 to 6 lbs (8mm) 5mm 7 to lbs 85mm to 9 lbs mm 5 to lbs Synchron. MM (mm) 55mm 8 to 7 lbs 85mm to 7 lbs 5mm to lbs 7mm 3 to 6 lbs /8inch oz ML 3/6inch oz (.8in.) /inch oz 5/6inch oz /inch oz L 5/6inch 3 oz (/5in.) 3/8inch 3 oz L (3/8in.) inch 7 oz 3/inch oz inch lb 3/inch lbs inch lbs H inch lbs (in.) inch 5 lbs 3inch 8 lbs inch 7 lbs H (in.) 3inch lbs inch 6 lbs inch 9 lbs H 3inch lbs (/in.) inch lbs 5inch 6 lbs MutiRib Belt Deflection Force Table Belt Cross Section Small Sheave Diameter range Force F Lbs. Per Rib J J J L L L M M M Force Measure the span length t as shown in the sketch above. Standard VBelt Tensioning Deflection Force Table Deflection Force Belt Smaller Pulley Cross Diameter Range Runin Normal Section (in.) (lbs.) (lbs.) /8 / A / /8 33/ /8 3/ A / /8 B / 3.. 5/ 3 B.5. 3/ C / 53/ 7 C / D E V V V V V FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

79 Cross Reference Listing Browning Dodge Maurey T.B. Woods Also: Variable Pulley CrossOver Chart BE SURE TO SPECIFY 79

80 CROSS REFERENCE LISTING BROWNING / MASKA FIED BORE FIED BORE AL SINGLE GROOVE FIED BORE AL DOUBLE GROOVE FIED BORE B5L SINGLE GROOVE FIED BORE B5L DOUBLE GROOVE MA 5 AK 7 MA 8 AK MA AK MA AK MA AK 3 MA 3 MA AK 5 MA 5 AK 6 MA 6 AK 7 MA 7 AK 8 MA 8 AK 3 MA 3 AK 3 MA 33 AK 3 MA 35 AK 39 MA 38 AK MA AK MA 3 AK 6 MA 5 AK 9 MA 8 AK 5 MA 5 AK 5 MA 53 AK 56 MA 55 AK 59 MA 58 AK 6 MA 6 AK 6 MA 63 AK 66 MA 65 AK 69 MA 68 AK 7 MA 7 AK 7 MA 73 AK 79 MA 78 MA 8 AK 8 MA 83 AK 89 MA 88 MA 9 AK 9 MA 93 AK 99 MA 98 MA AK MA 3 AK 9 MA 8 MA AK MA 3 MA AK MA 3 AK 3 MA 33 AK MA 3 AK 5 MA 53 AK MA AK MA AK MA 3 AK 3 MA AK 5 MA 5 AK 6 MA 7 AK 7 MA 8 AK 8 MA 9 AK 3 MA 3 AK 3 MA 33 AK 3 MA 35 AK 39 MA 38 AK MA AK MA 3 AK 6 MA 5 AK 9 MA 8 AK 5 MA 5 AK 5 MA 53 AK 56 MA 55 AK 59 MA 58 AK 6 MA 6 AK 6 MA 63 MA 7 AK 7 MA 73 MA 8 AK 8 MA 83 MA 9 AK 9 MA 93 MA AK MA 3 MA AK MA 3 MA AK MA 3 AK 3 MA 33 AK MA 3 AK 5 MA 53 AK 8 MA 83 MB MB 3 BK MB BK 5 MB 5 BK 6 MB 6 BK 7 MB 8 BK 8 MB 3 BK 3 MB 3 MB 33 BK 3 MB 3 BK 3 MB 35 BK 36 MB 38 BK MB BK 5 MB 3 BK 7 MB 5 BK 5 MB 8 BK 5 MB 5 BK 55 MB 53 BK 57 MB 55 BK 6 MB 58 BK 6 MB 6 BK 65 MB 63 BK 67 MB 65 BK 7 MB 68 BK 7 MB 7 BK 75 MB 73 BK 77 MB 75 BK 8 MB 78 MB 8 BK 85 MB 83 BK 9 MB 88 MB 9 BK 95 MB 93 BK MB 98 MB BK 5 MB 3 BK MB 8 MB BK 5 MB 3 BK MB 8 MB BK 3 MB 8 BK MB 38 BK 6 MB 58 BK 9 MB 88 MB MB 3 BK 5 MB 5 BK 7 MB 8 BK 8 MB 3 BK 3 MB 3 MB 33 BK 3 MB 3 BK 3 MB 35 BK 36 MB 38 BK MB BK 5 MB 3 BK 7 MB 5 BK 5 MB 8 BK 5 MB 5 BK 55 MB 53 BK 57 MB 55 BK 6 MB 58 BK 6 MB 6 BK 65 MB 63 BK 67 MB 65 BK 7 MB 68 MB 7 BK 8 MB 78 MB 8 BK 9 MB 88 MB 9 BK MB 98 MB BK MB 8 MB BK MB 8 MB BK 3 MB 8 BK MB 38 BK 6 MB 58 BK 9 MB 88 AK 8 MA 83 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

81 LIGHT DUTY BUSH TYPE MAL & MAL (A & L VBELTS) CROSS REFERENCE LISTING BROWNING / MASKA LIGHT DUTY BUSH TYPE MBL & MBL (AB & L5L VBELTS) H = Maska L Bushing BUSH TYPE SINGLE GROOVE A BUSH TYPE DOUBLE GROOVE A BUSH TYPE SINGLE GROOVE B BUSH TYPE DOUBLE GROOVE B AK 3H MAL 3 AK 3H MAL 3 AK 3H MAL 3 AK 39H MAL 37 AK H MAL 39 AK 3H MAL 3 AK 3H MAL 3 AK 3H MAL 3 AK 39H MAL 37 AK H MAL 39 BK 3H MBL 3 BK 3H MBL 33 BK 3H MBL 35 BK 36H MBL 37 BK H MBL 39 BK 3H MBL 33 BK 3H MBL 35 BK 36H MBL 37 BK H MBL 39 BK 5H MBL AK H MAL AK 6H MAL AK 9H MAL 7 AK 5H MAL 9 AK 5H MAL 5 AK H MAL AK 6H MAL AK 9H MAL 7 AK 5H MAL 9 AK 5H MAL 5 BK 5H MBL BK 7H MBL BK 5H MBL 7 BK 5H MBL 9 BK 55H MBL 5 BK 7H MBL BK 5H MBL 7 BK 5H MBL 9 BK 55H MBL 5 BK 57H MBL 5 AK 56H MAL 5 AK 59H MAL 57 AK 6H MAL 59 AK 6H MAL 6 AK 66H MAL 6 AK 56H MAL 5 AK 59H MAL 57 AK 6H MAL 59 AK 6H MAL 6 AK 7H MAL 7 BK 57H MBL 5 BK 6H MBL 57 BK 6H MBL 59 BK 65H MBL 6 BK 67H MBL 6 BK 6H MBL 57 BK 6H MBL 59 BK 65H MBL 6 BK 67H MBL 6 BK 7H MBL 67 AK 69H MAL 67 AK 7H MAL 69 AK 7H MAL 7 AK 79H MAL 77 AK 8H MAL 8 AK 8H MAL 8 AK 9H MAL 9 AK H MAL AK H MAL AK H MAL BK 7H MBL 67 BK 7H MBL 69 BK 75H MBL 7 BK 77H MBL 7 BK 8H MBL 77 MBL 69 BK 8H MBL 77 BK 9H MBL 87 BK H MBL 97 BK H MBL 7 AK 89H MAL 87 AK 9H MAL 9 AK 99H MAL 97 AK H MAL AK 9H MAL 7 AK 3H MAL 3 AK H MAL AK 5H MAL 5 AK 8H MAL 8 BK 85H MBL 8 BK 9H MBL 87 BK 95H MBL 9 BK H MBL 97 BK 5H MBL BK H MBL 7 BK 3H MBL 7 BK H MBL 37 BK 6H MBL 57 BK 9H MBL 87 AK H MAL AK H MAL AK 3H MAL 3 AK H MAL AK 5H MAL 5 AK 8H MAL 8 BK H MBL 7 BK 5H MBL BK H MBL 7 BK 3H MBL 7 BK H MBL 37 BK 5H MBL 7 BK 6H MBL 57 BK 9H MBL 87 H.V.A.C. VARIABLE F.H.P. GRAY CAST IRON VARIABLE LIGHT DUTY FRACTIONNAL FIED BORE A GROOVE VARIABLE PITCH INTEGRAL VPVP/8 SERIES VBELT SHEAVE SINGLE GROOVE VBELT SHEAVE DOUBLE GROOVE VL 5 MVL 5 VL 3 MVL 3 VL 3 MVL 3 VL MVL VL MVL AL 5 MFAL 5 AL 6 MFAL 6 AL 7 MFAL 7 AL 8 MFAL 8 AL 9 MFAL 9 AL MFAL AL MFAL AL MFAL AM MFAM VP VP 835 VP 8 VM 5/VP 5 85 VP VP 6/VP 6/VP VP 68/VP VP VP 36 VP VP 5 VP 56 VP 6/VP 6/VP 65 VP 68/VP 7 VP 75 D835 D8 D85 D855 D86 D867 D87 BE SURE TO SPECIFY 8

82 8 FOR DEPENDABLE VBELTS, SHEAVES AND BUSHINGS

83 BE SURE TO SPECIFY 83