COMPLEMENTARY PRODUCTS & INFORMATION...26 COUPLINGS Elastomeric-tire Maskaflex...59 Jaw-type Maska Starflex...53

Transcription

1 Cert. 76./ Alphabetical Index Page BALANCING STANDARDS...8 BUSHINGS QD Bushings...3 Mounting & Proper Wrench Torque...5 Short QD Bushings...7 QD Weldon Hubs...8 Reducer Bushings...6 TaperLock Bushings... T Hubs & Bushings...9 COMPLMNTARY PRODUCTS & INORMATION...6 COUPLINGS lastomerictire Maskaflex...59 Jawtype Maska Starflex...53 DISPLAYS... SHAVS A/B Combination Section...9 Adjustable Light Duty (H.V.A.C.) MVL...9 Adjustable Pitch 8 Series, VP Series, MVS... C Section...3 D Section...35 ractional ixed Bore (.H.P.) MAL... Light Duty Bush Type MAL & MBL...7 Light Duty ixed Bore MA & MB...3 3V Section V Section V Section... Step Pulleys MAS... SYNCHRONOUS DRIVS HTD Sprockets...9 Timing Pulleys... B SUR TO SPCIY 3 NOT: All dimensions are subject to change without prior notice

2 DISPLAY UNIT 8 h 33 w, hardware to attach to wall not included. This sided wall unit, with a detachable bottom shelf, is offered with a selection of our popular lightduty sheaves & QD bushings. Or you can Doityourself and put together a display with your bestselling Maska products. (xample). LightDuty Sheaves & Bushings Includes board, shelf, parts, pegs & labels: DISWCOMPLT (items listed on facing page). Doityourself (shelf optional) Includes board and pegs: DISWBOARD With shelf: DISWSHL 6 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

3 QD INTRCHANGABL BUSHING Check these high quality features... TAPRD, PRCISION IT. 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. ULL 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. Ductile or Gray ASY TO INSTALL, ASY TO RMOV. 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. ST SCRW OVR TH KY. 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. ULLY INTRCHANGABL WITH OTHR 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 DIMNSIONS Bushing Bushings Bushing Bushing L JA to J M to W S ( H Cross Reference) Inclusive Inclusive TAPR 3/ PR T ON DIAMTR B Dimensions, Inches Bore Range Bush List Bolt Cap Screws Set Approx. ing Price Circle Required Screw Weight A B D G H L M NC Grade 5 Dimensions MIN MA Pounds L(*) 9. /3 9/3 3/6 3/3 /3 =/ UNC x /.7 JA(*).9 5/6 /6 3/6 9/6 /3 3= UNC x / /. SH(*).9 /6 3/ / /8 / / 3=/ / UNC x / /6.9 SDS(*) 7.3 7/6 3/6 3 3/6 3/ / /8 5/6 /6 3=/ / UNC x /.3 SD(*).8 7/6 3/6 3 3/6 / / /8 3/6 /6 3=/ / UNC x /.6 SK(*) 6.8 3/6 3 / 5/6 3/6 3 5/6 3=5/6 / UNC x /.7 S(*) /8 / 5/6 /6 3 3= 5/68 UNC x 5/6 3.9 (*) 69. 3/ 3 7/3 6 5/6 /6 5 3= 3/ 6 UNC x (*) 8. 3/6 7/6 6 3/6 3/3 3/3 5 3=9/6 6 UNC x 3.3 J(*) /3 7 / 3 3 3/6 3/3 3/3 6 / 3= 6 UNC x 7/6.8 M(*) 3. / /6 3/3 3/3 6 3/ 7 =3/7 6 UNC x N(*) / 9/6 3/6 8 /8 8 =8 3 UNC x 3/ 6 6. P(*) 8. 3/ 8 / 3/ 7 7 / / 9 =9 UNC x / 5/ W 8. 7/ / 3/ = /8 None / S / /8 7 3/ 3/6 /8 5 3/ 5 5= /5 None Refer to page for cap screw torque ratings. * Standard with set screw over keyway. Note: Approx. weight in lbs. for an average size bore. QD bushings is a registred trademark and manufactured by Maska under license. 8 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

4 QD BUSHINGS BOR AND KYSAT DIMNSIONS 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 BORS (INCHS) Bushing Stock Bore Keyseat Bushing Stock Bore Keyseat Bushing Stock Bore Keyseat 7/6 No K.S. 9/6 /8 x /6 /63/3/6 3/6 x 3/3 L 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x /6** 7/6 x /6** x 3/6** 9/6 /8 x /6 /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 /63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 SH 5/6 5/6 x 5/3 7/6 x /8** 9/6 x /6** /6 No K.S. 9/6 /8 x /6 /63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 SDS 7/6 9/6 x 3/6 /6 3/ x /8** 3/6 x /8** 5/6 x /6** No K.S. 9/6 /8 x /6 /63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 SD 7/6 9/6 x 3/6 /6 3/ x /8** 3/6 x /8** 5/6 x /6** No K.S. 9/6 /8 x /6 /63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 SK 7/6 9/6 x 3/6 /6 3/ x 3/6 3/6 5/6 /6 x / /8 x / 3/6 / x /8** /KW* 5/6 x /8** 7/6 x /6** 9/6 No K.S. Note: All are stocked without keyseat Note: Bushings L, JA, SH, SDS, SD, SK, S & manufactured STANDARD STOCK BORS (MILLIMTRS) 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 /63/3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 9/6 /6 x 3/6 3/ x 3/6 S 3/6 5/6 /6 x / /8 3/6 / x / /KW* x 5/6 5/6 7/6 x 3/6** 9/6 /6 3/ 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 5/6 x 5/3 7/6 9/6 /6 x 3/6 3/ x 3/6 3/6 5/6 /6 x / /8 3/6 / x / /KW* 5/6 7/6 x 5/6 9/6 /6 3/ x 5/6 3/6 3/ x 5/633 /6 3/ x/8** 3 /83 3/63 / 3/ x/8** 3 5/63 3 7/6 x /6** 3 x /6** /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 9/6 /6 x 3/6 3/ x 3/6 3/6 5/6 /6 x / /8 3/6 / x / /KW* 5/6 7/6 x 5/6 9/6 x 5/6 /6 3/ x 5/6 3/6 5/633 /6 3/ x 3 /83 3/63 / 3/ x 3 5/63 3 7/63 3 9/6 x 3/6** 3 /63 3/ x 3/6** 3 3/63 3 5/6 x /8** No K.S. 7/6 9/6 /6 x 3/6 3/ x 3/6 3/6 5/6 x / /8 3/6 / x / 5/6 7/6 9/6 x 5/6 /6 3/ x 5/6 J 3/6 5/633 /63 /8 3/ x 3 3/63 / 3/ x 3 5/63 3 7/63 x 7/6 3 /63 3/ x 7/6 3 3/6 x 3 3 5/6 x ** /8 3/6 / x /8** 7/6 x /8** x x x x 8 SK x x x 6 8 x 9** x x 8 S x x x x x 8 x x x x 7 75 x 8 x x x x 7 75 x 8 85 x x /8 3/6 / x / 7/6 x 5/6 /6 3/ x 5/6 3/6 5/63 3/ x 3 /83 3/63 / 3/ x 3 3 7/63 x 7/6 M 3 /63 3/ x 7/6 3 3/63 3 5/6 /8 3/6 x / 5/6 7/6 x /6 3/ / x 5/655 /85 3/6 / x /** 5 /5 5 7/65 / x /** 3/ x 5/6 ( 5/6)(3)3 / 3/ x 3 5/63 3 7/63 (3) x 7/6 3 3/ x 7/ /6 3/6 /8 / x N 7/6 x 9/6 /6 3/ / x 5/65 / x 5 /8(5 3/6)5 /5 5/65 / x /** 5 7/65 / x /** 5 3/ 5 x /** 5 5/66 x /8** 5/6(3 /) 3/ x 3 3 7/6(3 )()(3 3/) x 7/6 (3 )3 5/6( /)( ) x 7/6 x P ( )( /6)( 3/)( ) / x 5/655 /8(5 3/6)5 /5 5/6 / x 5 5 7/65 / x 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 3/5 7/65 / x W 5 5/66 /6 7/6 x 3/ 6 x 3/ 6 3/77 /7 3/ x 3/ 7 3/ x / S S5RB S7RB Stocked in rough bore sizes; can be rebored from 5 to max. NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves * Bushings with wide keyway will be shipped unless the 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 nglish system; instead, dimensions are given for the key itself, which is rectangular in shape and not square as in the nglish system. This meets ISO standards, except nominal diameters over 3 up to 6 included (metric bore). B SUR TO SPCIY 9

5 QD BUSHING MOUNTING AND PROPR WRNCH TORQU STANDARD MOUNT ITHR WAY RVRS MOUNTING BUSHING LANG TOWARD MACHIN 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 LANG AWAY ROM MACHIN 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 RMOV. Remove capscrews and thread into tapped holes in sheave hub. Tighten progressively until bushing is free from sheave taper.. Remove assembly from shaft. CAPSCRWS AR ALWAYS ACCSSIBL ROM TH OUTSID. TO RMOV. 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 US LUBRICANTS OR ANTI SIZ COMPOUNDS ON TAPRD BOR OR BUSHING SUITCAS. TIGHTNING 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 ST SCRW TIGHTNING TORQUS AND AIAL LOADS PROPR WRNCH TORQU TO TIGHTN SCRWS OPN ND OR SOCKT WRNCH BUSHING SCRW TORQU TORQU No SIZ WRNCH CAPACITY Inches LNGTH tlbs Inches PULL(LBS) InLbs L / 6 8, JA # 5 5, SH / 9 7 3,5 SDSSD / 9 7 5, SK 5/ , S 3 6 6, 6 6, 9/ , J , M 3/ , N 3 5 5, P , W / , S / , RCOMMNDD ST SCRW AIAL LOAD ( ±3%) ST SCRW SOCKT/ALLN KY TIGHTNING TORQU CUP POINT KNURLD POINT SIZ SIZ (ACROSS LAT) NWTONMTR LBINCHS NWTONS LB NWTONS LB (Nm) (N) (N) # 3/ / / /6 8 5/ / / / Note: or axial loads in excess of the values listed, a shouldered shaft against the face of the inner ring is recommended. OR DPNDABL VBLTS, SHAVS AND BUSHINGS

6 RDUCR BUSHINGS Split galvanized steel with 3/6 keyway slot; polybagged. Note: Sold in quantity shown after Part No. only. No broken package. I.D. O.D. Part No. (Qty) List Price ($ a.) Length / / 5/6 5/6 7/6 SB () SB () SB3 () SB () SB5 ()..... /6 /6 /6 3/ (Key) 3/ SB6 () SB7 () SB8 () SB9 () SB () K () / / / 5/6 / Reducer bushings instantly adapt larger bores of various tools (sheaves, gears, sprockets) to smaller diameter shafts B SUR TO SPCIY

7 SHORT QD BUSHINGS The Maska Short QD bushing has the same features as the standard QD bushing, with the exception that the total length is reduced to adapt to a QD weldon hub. SHORT QD BUSHINGS Bushing No. JS MS NS PS WS SS List Price $ * Bushing JS MS NS PS WS SS Dimensions Inches Bore range A* B D L BC Min. Max. 3/6 3/ Bushing JS / 9 /8 3/ 5 7 3/ / Bushing MS to WS Inclusive 3 3/ / 8 3/ 6 / 7 8 3/ 5 7/6 3 7/6 3 5/6 5/6 5 7/6 5/6 * Bushing SS 7/6 5 7/ * Required (3) NC () 3/NC 3 () 9NC 3 () 8NC () /87NC 5 (5) //7NC 5 * Stocked in rough bore only. Can be rebored from 5/6 to max. Contact Maska for price and delivery STANDARD STOCK BORS Bushing Stock Bore Keyseat JS MS NS PS WS 7/6 5/6 3 7/6 3 5/6 7/6 3 7/6 3 5/6 7/6 5/6 5 7/6 3 5/6 7/6 5/6 5 7/6 5 5/6 6 5/6 5 7/6 5 5/ / / /6 5 5/6 6 7/ / / /6 8 x 5/6 3/ x x 7/6 x ** x /8** x 7/6 x / x /** x / x / x /** x /8** / x x 3/ x /** 3/ x /8** / x x 3/ 3/ x 3/ x /** Approx. Weight (lbs.) SS 5/6RB* None 8. * Stocked in rough bore only. Can be rebored from 5/6" to " max. ** Key provided with these sizes only. TAPR 3/ / ON DIAMTR B OR DPNDABL VBLTS, SHAVS AND BUSHINGS

8 QD WLDON HUBS MASKA QD Weldon hubs for many applications, such as conveyor drum pulleys, rotors, 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 SD. Type Type Hub No. List Price ($) its Bushing Type Dimensions Inches D* L B P L BC Bore Range Approx. Weight HL HCL HJA HSH HSDS HSK L L JA SH SDS SK /3 / /6 3 5/6 to to to / to /6 to to HS H H HJ S J / 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: HL & HCL = (+. /.5 ) Type : Standard mount only HJA thru HJ = (+. /. ) HM thru HW = (+. /.3 ) B SUR TO SPCIY 3

9 T HUBS & BUSHINGS 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 steel in many sizes and hubs are made of low carbon steel, known for its excellent welding properties. Conveyor Drum Application TH5 TO TH8 TH TH Section AA INCLUSIV Taper per ft. on Diameter B T HUBS Hub No. List Price $ Bushing Dimensions Inches Tapped Holes Approx. Weight D* L B P L BC No. Size TH5 TH TH5 TH TB5 TB TB5 TB /6 /8 / /6 9/6 3/6 7/6 3 3/6 3 3/ 9/6 /NC 5/68NC 6NC 7/6NC TH35 TH TH5 TH TB35 TB TB5 TB / / /6 / 3/ 5 7/6 6 / /6 3NC 9/6NC NC 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 ) OR DPNDABL VBLTS, SHAVS AND BUSHINGS

10 T HUBS & BUSHINGS T Bushing Dimensions Bushing No. List Price $ Dimensions Inches A B D L BC No. Size Recommended Wrench Torque (ftlbs) Approx. Weight TB5 TB TB5 TB /3 / / 7/6 5 5/6 /8 3/3 /6 7/6 3 3/6 3 3/ 9/6 /NC x 5/68NC x / 6NC 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 NC x / 3/NC x TB6 TB7 TB8 TB TB /8 5/6 9/6 3/ Standard Stock Bores 5/6 3 5/ /6 Bushing Stock Bore Keyseat TB5 TB TB5 TB3 TB35 TB TB5 * 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 x /8** 3/6 x 3/3 / x /8 x 3/6 x 3/6** / x /8 x 3/6 x / x /8** x 3/6 x / x 5/6 3/ x 3/6** x / x 5/6 3/ x x 5/6** x 5/6 3/ x x 7/6 x ** x 7/6 x x ** /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: or the first month of operation, inspect bushings and capscrews for proper seating at least once a week and thereafter during periodic shutdown. TB5 TO TB8 INCLUSIV TB TB5 TB6 TB7 TB8 TB 3 5/6 7/6 5/6 5 7/ / / / / /6 9 x / x / x x 3/ x 3/ 3/ x 3/ 3/ x 3/ x 3/ x 3/ x TB x 3 x **Key provided with these sizes only. TB5TB5 made from gray cast iron (except *= steel). TB6TB made from gray cast iron. TB SCTION AA Taper per ft. on diameter B B SUR TO SPCIY 5

11 TAPRLOCK 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. ill remaining holes with grease to prevent dirt buildup. 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 BORS (INCHS) BUSHING PRIC STOCK BOR KYSAT BUSHING PRIC STOCK BOR KYSAT /6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 / x /6* 8. 9/6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 / x /8 /6 /8 / x /6*.8 9/6 /8 x /6 /6 3/ 3/6 3/6 3/3 5/6 /6 /8 3/6 / / x /8 5. 9/6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 3. 9/6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 x / /6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 x 3/6 9/6 /6 x /8* /6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 x x 3/6 9/6 /6 x /8*. 9/6 /8 x /6 /6 3/ 3/6 3/6 x 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 9/6 /6 3/ x 3/6 3/6 x / 5/6 x 3/6* /8 x /8* 57.6 /8 x /6 /6 3/ 3/6 3/6 3/3 5/6 /6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 9/6 /6 3/ x 3/6 3/6 5/6 /6 /8 3/6 / x / 5/6 7/6 x 3/6* /6 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 5/6 x 5/3 7/6 /6 3/ x 3/6 3/6 5/6 /8 3/6 / x / 5/6 7/6 x 3/6* /6 x 3/3 5/6 /8 3/6 / / x /8 5/6 5/6 x 5/3 7/6 9/6 /6 3/ x 3/6 3/6 5/6 /6 /8 3/6 / x / 5/6 7/6 /6 3/ 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 5/6 x 3/3 7/6 9/6 /6 3/ x 3/6 3/6 5/6 /6 /8 x / 3/6 / x / 5/6 7/6 /6 3/ x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x /* /6 / / x /8 5/6 x 5/3 7/6 /6 3/ x 3/6 5/6 /8 3/6 / x / 7/6 /6 3/ x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3 5/ /6 3 3 /6 3 3/ x /* 3 3 5/6 x /*. 7/6 /6 3/ x 3/6 5/6 /8 3/6 / x / 7/6 /6 3/ x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3 3 7/6 3 x 7/6 3 /6 3 3/ x /* 3 3 5/6 /8 3/6 / 7/6 x /* /6 3/6 x / 7/6 3/ x 5/6 5/6 3 3 /8 3 3/6 3 / 3/ x 3 3 7/ / x 7/ /6 /8 3/6 / x 7/6 x /* 3/ 5/6 / x /* /6 /6 x 5/6 5/6 3/ x 3 3 7/6 x 7/ /6 / 7/6 x 5/6 5 / x 7/6* STANDARD STOCK BORS (MILLIMTRS) STOCK BOR KY STOCK BOR KY STOCK BOR KY STOCK BOR KY STOCK BOR KY 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

12 TAPRLOCK BUSHINGS C DIMNSIONS OR 8 THRU 55 TAPRLOCK BUSHINGS Rating HUB DIAM. R. Installation Screw + G L * M * Bush No. Torque A B C D Qty Size Std Hex Short Std Short Approx. Capacity Key Key Hex Key Wt. (lb in.) Gray Iron Key (lbs) 8, 3/6 /6 / x /8 / 3/. 8,3 5/6 9/6 / x /8 / 3/. 3,6 3 / 3/ x 3/6 / ,55 3/ x 3/6 / ,85 3 x 3/6 /6.6 6,3 / /8 x 3/6 /6.7 65,3 / 3 / /8 x 3/6 /6. 7,5 3/ / 7/6 x 9/6 5/6. 57,6 3 3/ 3 / x / 3. 55,3 3 3 / x / 3.5 3, / 6 / x / 3/6 3/6 /6 / , / 3 5 3/ x / 3/6 3/6 /6 / , /3 3 x 39 5/6 3 / ,3 5 3/ /6 x 3/ / , /8 3 3/ x 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. or more severe duty, divide torque capacity by service factor suggested in table below at right. Note: Approx. weight in lbs. for an average size bore. DSIGNATION: A TaperLock bushing is define by digit representing two numbers. The first number represent the maximum bore size and the second number represent the bushing length. or example, an 8 has a max. bore of. in and a total length of.8 RCOMMNDD WRNCH TORQU SRVIC ACTOR WRNCH TORQU WRNCH TORQU BUSHING NO. SCRWS (PoundsInches) (Poundseet) 8, 8 / Set Screws 55.5, 5, 3 Set Screws , 65 Set Screws /6 Set Screws , 55 Set Screws , 3 Set Screws Cap Screws, 83. Cap Screws, / Cap Screws,5. 55 Cap Screws 3, , 76, 865 / Cap Screws 7, , Cap Screws 3,7,. Service actor Type of Loading. Light Starting & steady running.5 Light starting & uneven running airly heavy starting & steady or uneven running Light or heavy starting & moderate shock running Light or heavy starting & severe shock running, or reversing loads B SUR TO SPCIY 7

13 LIGHT DUTY ID BOR, MA (A & 3LL VBLTS) GROOV D.D. 3L Belts D.D. A (L) Belts O.D. Part No Cross Reference List Price ($) 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 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 / / / / / / / / /8 /8 /8 /8 3/ 3/ 3/ 3/ 3/ 3/ 3/ /8 3/ 3/ 3/ /8 3/ /8 3/ /8 3/ /8 3/ (5/6) /8 3/ (5/6) /8 3/ (5/6) /8 3/ (5/6) /8 3/ (5/6) /8 3/ /8 3/6 3/ (5/6) /8 3/6 3/ (5/6) /8 3/6 3/ (5/6) /8 3/6 3/ (5/6) /8 3/6 3/ (5/6) /8 3/6 3/ /8 3/ /8 3/6 3/ /8 3/6 3/ (5/6) /8 3/6 ( /) 3/ /8 3/ /8 3/6 3/ (5/6) /8 3/6 3/ /8 3/ /8 3/6 3/ (5/6) /8 3/6 ( /) 3/ /8 3/ /8 3/6 3/ /8 3/6 ( /) 3/ /8 3/ /8 3/ /8 3/6 3/ /8 3/6 3/ /8 3/6 ( /) 7/6 3/ /8 3/6 ( ) 7/6 3/ /8 3/6 3/ /8 3/6 ( ) 7/6 3/ /8 3/6 7/6 3/ AK5 AK6 AK7 AK8 AK3 AK3 AK3 AK39 AK AK AK6 AK9 AK5 AK5 AK56 AK59 AK6 AK6 AK66 AK69 AK7 AK7 AK79 AK8 AK /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 / / 3/6 7/6 7/6 3/ / 3/ AK9 AK99 AK AK9 AK AK AK3 AK AK5 AK 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 5/6 / 5/6 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/6 NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. ALL PRODUCTS HAV ST SCRWS Type Type T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOT: 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 3) 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 33 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

14 LIGHT DUTY ID BOR, MA ( A VBLTS) GROOVS D.D. A Belts O.D. Part No Cross Reference List Price ($) 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 /6 /6 /6 /6 3/ 3/ () 3/ 3/ () 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 3/6 3/ /8 3/ /8 3/6 ( ) ( 7/6) 3/ /8 3/ /8 3/6 ( ) ( 7/6) 3/ /8 3/ /8 3/6 ( ) 3/ /8 3/ /8 3/6 ( ) 3/ /8 3/ /8 3/6 3/ /8 3/ /8 3/6 ( ) ( 7/6) 3/ /8 3/ /8 3/6 ( 7/6) /8 3/6 ( 7/6) 3/ /8 3/6 7/6 3/ /8 3/6 /8 3/6 7/6 3/ /8 /8 /8 /8 /8 /8 /8 /8 3/6 3/6 3/6 3/6 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/ /6 /6 /6 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 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 AK8 AK9 AK AK AK AK3 AK AK5 AK P.D. for A Belts = O.D. ( ) = Contact Maska for price and delivery NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/6 / 5/6 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/6 ALL PRODUCTS HAV ST SCRWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOT: 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 3) 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 33 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.) B SUR TO SPCIY 9

15 LIGHT DUTY ID BOR, MB (A(L) & B(5L) VBLTS) GROOV D.D. A (L) Belts *.5 *.5.65 * D.D. B (5L) Belts O.D. Part No Cross Reference List Price ($) 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 B 6B 6B 5B 5B 6B 6B 6B 6B 6B 6B 6B 6B /35 / / / / 5/6 * * 3/* 3/ * 3/ 3/ * /8* 3/ 3/ /8 3/ /8 3/ /8 /8 /8 /8 /8 /8 /8 /8 /8 3/6 3/6 3/6 / / 3/6 / /8 5/6 / / / / / / 7/6 / / /8 3/ /8 3/ /8 3/ /8 3/ /8 3/ /8 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 3/ /8 3/ /8 3/ /8 3/ /8 3/6 3/ /8 3/6 3/ /8 3/6 3/ /8 3/6 3/ /8 3/ /8 3/6 3/ /8 3/ /8 3/6 3/ /8 3/ /8 3/6 ( ) 3/ /8 ( ) 3/ /8 3/6 ( /) ( ) 3/ /8 3/6 3/ /8 ( ) 3/ /8 3/6 3/ /8 3/ /8 ( ) ( 7/6) 3/ /8 3/6 ( /) BK5 BK BK5 BK 3/ /8 3/6 /8 3/ /8 ( ) ( 7/6) 3/ /8 3/ /8 ( ) 3/ /8 3/6 ( ) 7/6 3/ /8 3/6 7/ BK3 BK BK6 BK9 3/ /8 3/6 7/6 3/ /8 3/6 ( 7/6) /8 3/6 / 7/6 3/6 3/ /8 3/6 ( /) 7/ 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 NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/6 / 5/6 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/6 ALL PRODUCTS HAV ST SCRWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOT: 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 3) 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 33 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.) OR DPNDABL VBLTS, SHAVS AND BUSHINGS

16 LIGHT DUTY ID BOR, MB (A & B VBLTS) GROOVS D.D. A Belts *.35 *.6 * , , D.D. B Belts O.D. Part No Cross List Reference Price ($) 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 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 * * *3/ * 3/ * 3/ * * /8 3/ /8 3/ /8 ( 3/ /8) /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 / BK3 BK3 BK36 BK BK5 BK7 BK5 BK5 BK55 BK57 BK6 BK6 BK65 BK67 BK7 BK8 3/ /8 /8 3/ /8 3/ /8 3/ /8 ( /8 ) 3/ /8 3/ /8 3/ /8 3/ /8 3/ /8 (3/ /8 ) 3/ /8 ( /8 ) 3/ /8 ( ) 3/ /8 ( 3/6 7/6) 3/ /8 3/ /8 ( 3/6 7/6) BK9 BK BK 3/ /8 3/ /8 3/6 7/6 3/ /8 3/ /8 3/6 7/6 3/ /8 3/ /8 ( 7/6) BK BK3 BK BK6 BK9 3/ /8 3/6 7/6 3/ /8 / ( 3/6 7/6) 3/ /8 ( 7/6) ( 3/6 7/6) /8 3/6 ( 7/6) 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 NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Bore Range 5/6 / 5/6 7/6 3/ Keyseat None 3/6 3/3 / /8 5/6 5/3 3/6 ALL PRODUCTS HAV ST SCRWS T : Type. Suffix indicates construction: A = arms; B = block; W = web. NOT: 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 3) 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 33 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.) B SUR TO SPCIY

17 LIGHT DUTY BUSH TYP MAL & MAL (A & 3LL VBLTS) NW: Warehouse Innovation Colorcoded products for easy stock retrieval on shelves. (3L) Belts D.D. GROOV O.D. DIMNSIONS* A(L) Part Cross List Wt Belts No Refer. Price Type L M (lbs) MAL3 AK3H 9.6 B 3/ /3 3/ MAL3 AK3H 9.36 B 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 / GROOVS D.D. O.D. DIMNSIONS* A Part Cross List Wt Belts No Refer. Price Type L M (lbs) MAL3 AK3H B /3 3/ MAL3 AK3H 37.8 B /3 3/ MAL3 AK3H B 3/3 /3 / MAL37 AK39H B 3/3 /3 / MAL39 AKH.68 B 3/3 /3 / MAL AKH.6 B 3/3 /3 / MAL AK6H 6. W 3/3 /3 / MAL7 AK9H 7. W 3/3 /3 / MAL9 AK5H 8. W 3/3 /3 / MAL5 AK5H 5.5 W 3/3 /3 / MAL5 AK56H 5. W 3/3 /3 / MAL57 AK59H A 3/3 /3 / MAL59 AK6H A 3/3 /3 / MAL6 AK6H A 3/3 /3 / MAL7 AK7H A 3/3 /3 / MAL8 AK8H 69. 6A 3/3 /3 / MAL9 AK9H A 3/3 /3 / MAL AKH A 3/3 /3 / MAL AKH A 3/3 /3 / MAL AKH 9. 6A 3/3 /3 / MAL3 AK3H A 3/3 /3 / MAL AKH.36 6A 3/3 /3 / MAL5 AK5H.68 6A 3/3 /3 / MAL8 AK8H 5. 6A 3/3 /3 / Legend:,, 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. 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

18 LIGHT DUTY BUSH TYP MBL & MBL (AB & L5L VBLTS) NW: Warehouse Innovation Colorcoded products for easy stock retrieval on shelves. DD GROOV O.D. DIMNSIONS* A(L) B(5L) Part Cross List Type Wt Belts Belts No Refer. Price 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:,, 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. Suffix on type indicates construction: A = arm; B = block; W = web. DD GROOVS O.D. DIMNSIONS* A B Part Cross List Type Wt Belts Belts No Refer. Price L M (lbs) MBL33 BK3H B 3/ /3 3/ MBL35 BK3H 39.8 B 3/ /3 3/ MBL37 BK36H.6 B 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 33 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.) B SUR TO SPCIY 3

19 ADJUSTABL LIGHT DUTY (H.V.A.C.) & RACTIONAL ID BOR (.H.P.) ADJUSTABL LIGHT DUTY (H.V.A.C.) MVL DIMNSIONS WT STOCK BORS MARKD PART No. LIST PRIC O.D. G L K Lbs. MA. MIN. MA. MIN. 3/ MVL /3 7/ 37/6.8 MVL /3 7/ 37/6. MVL /6 37/6. MVL /6 37/6.5 MVL 9..5 /6 37/6.75 VM /6 /6 /3.8 PART No. DATUM DIAMTR, INCHS 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 BLT MVL MVL MVL VM MVL A (L) MVL BLT MVL MVL MVL VM MVL5.... B* (5L) MVL BLT 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 up to 5HP. *DO NOT use B gripnotch belt ratings with MVL sheave. All packaged per carton. Broken package add 5% to standard price. RACTIONAL ID BOR A (L) SRIS (.H.P.) MAL DIAMTR STOCK BORS DIMNSIONS Part List D.D. Wt No Price Outside A (L) 3/ L P C (lbs) MAL x x (x) x 9/3 /6 5/3. MAL x x (x) x 9/3 /6 5/3.5 MAL x x (x) x 9/3 /6 5/3.75 MAL x x (x) x 9/3 /6 5/3. MAL x (x) x 9/3 /6 5/3 3. MAL x (x) x 9/3 /6 5/3.7 MAL x (x) x 9/3 /6 5/3 3. MAL x (x) x 9/3 /6 5/3 3.5 MAM 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 5/6 / 5/6 All packaged per carton. Broken package add 5% to standard price. Note: Stock MAL sheaves include socket head set screw with standard keyseat. Keyseat None 3/6 3/3 / /8 5/6 5/3 Condition: Nonstock bore: MAL available with bore and smaller; MAM available with 3/6 bore and smaller. CAUTlON: DO NOT use A gripnotch belts ratings with MAL and MAM 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 33 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.) OR DPNDABL VBLTS, SHAVS AND BUSHINGS

20 ADJUSTABL PITCH SHAVS SINGL GROOV 8 SRIS STOCK SIZS AND GROOVS 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. DOUBL GROOV Part No List Price O.D. L Max. Min. G Max. Min / /3 /3 3/ / /3 /3 3/.7.5 3/ 5/3 5/ / 5/3 5/3 855K / 9/3 5/3 86K / 9/3 5/3 867K / 9/3 5/3 87K / 9/3 5/3 Available Stock Bores * 3/ /8 9mm mm 9mm *3/ /8 9mm mm 9mm * 3/ /8.7mm mm 9mm mm *3/ /8.7mm mm 9mm mm 8mm *3/ /8.7mm mm 9mm mm 8mm 3/ /8.7mm 9mm mm 8mm 38mm mm 3/ /8.7mm 8mm 3/ /8 Approx. Shipping Weight Part List No. Price O.D. L G Max. Min. Max. Min. Available Stock Bores D / 5/6 3/6 3/ 3/ /8 mm D /6 3/6 3/ 3/ /8 D /6 7/6 D /6 7/6 D855K /6 7/6 D86K /6 7/6 D867K /6 7/6 D87K /6 7/6 3/ /8 8mm 3/ /8.7mm mm 8mm 3/ /8.7mm 9mm mm 8mm 38mm 3/ /8.7mm mm 8mm 38mm 3/ /8.7mm mm 8mm 38mm 3/ /8 Approx. Shipping Weight or 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 ² Comes with two set screws at degrees U.S. Patent Nº 5 9 Can. Patent Nº 678 K = key included Datum Diameter, inches (L) A BLT (5L) B BLT 5V BLT 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, 85 SINGL GROOV DOUBL GROOV B SUR TO SPCIY 5

21 ADJUSTABL PITCH SHAVS VP SRIS 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.. TYP (without key) TYP TYP 3 (without key) TYP DIMNSIONS Part No. VP5 VP3 VP3 VP VP List Price Type O.D. L /3 G Max. Min. Max. Min. 3/6 3/6 /6 /6 9/6 9/6 /6 /6 /6 3/6 Available Stock Bores * * 3/ * 3/ * 3/ * 3/ Approx. Shipping Weight VP VP5 VP5 VP56 VP /8 /6 /8 /6 /8 3/ /6 3/ /6 3/ /8 * 3/ /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 / 3/ /8 3/ /8 / 3/ /8 3/ / Part No. List Price Type O.D. L G Max. Min. Max. Min. Available Stock Bores Approx. Shipping Weight VP36 VP VP5 VP /8 /8 /8 3/6 * 3/ 3/ /8 3/ /8 3/ / VP6 VP6 VP65 VP / 3 3 / 3 /8 /8 /3 /3 /3 /3 3/ /8 3/ /8 / 3/ /8 /8 / VP7 VP / 3 / * Supplied without keyway thru the bore /3 /3 /3 /3 3/ /8 3/ /8 OR DPNDABL VBLTS, SHAVS AND BUSHINGS.6 6.5

22 ADJUSTABL PITCH SHAVS DATUM DIAMTRS 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 BLT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7 & VP7 VP75 & VP VP3 VP36 VP VP (L) A BLT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7& VP7 VP75 & VP VP3 VP36 VP VP (5L) B BLT VP VP5 & VP5 VP56 & VP56 VP6 & VP VP6 & VP6 VP65 & VP65 VP68 & VP68 VP7 & VP7 VP75 & VP VP3 VP36 VP VP 5V BLT 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 +. B SUR TO SPCIY 7

23 HAVY DUTY MVS DIMNSIONS STOCK BORS MARKD WT PART No. LIST PRIC O.D. L H MA. lbs MIN. MA. MIN. MA. /8 /8 MVS MVS MVS MVS MVS MVS DATUM DIAMTR, INCHS 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 BLT MVS MVS MVS MVS B MVS BLT MVS MVS MVS MVS MVS V MVS BLT MVS MVS MVS MVS MVS3 5V MVS5* BLT 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: very turn of the adjustment screw moves the flange by /6. 8 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

24 STP PULLYS MAS (GRAY CAST IRON) ID BOR, STOCK SIZS OR 3LL (A) VBLTS Part List Outside No Price Type Diameter STOCK BORS D G Wt MAS / 9/6 3/ 3 3/ 3/ 8. MAS / /8 9/6 3/ 3 3/ 7.5 MAS / /8 9/6 3/ / 3/ 6.5 MAS / 3 9/6 3/ 3 3/.5 MAS / /8 3 9/6 3/ / 3/. MAS / 3/ / 3/.3 NOT: 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 5/6 / Keyseat None 3/6 3/3 / /8 B SUR TO SPCIY 9

25 SHAV NOMNCLATUR 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 WARNING: xcessive sheave RIM speed may cause sheave failure resulting in injury to personnel and/or equipment damage. 3 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

26 COMPLMNTARY PRODUCTS VBelt Drive Accessories Indispensable tools for maintenance mechanics to ensure efficient, costsaving operations. Part No. 637 List Price: $5. VBelt Tension Tester checking the required force and the belt deflection distance. or use with all small Vbelt and synchronous drives. Comes in a protective plastic tube, instructions included. orce 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. or 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. Part No. 636 List Price: $5. Sheave & Belt Gage 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. or all Classical, Narrow and A/B combination sheaves. Note: You can also use these gages to determine the corresponding belt that fits with each sheave. ind 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 B SUR TO SPCIY 3

27 COMPLMNTARY INORMATION 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 speed ratio is < (ex. :), we refer to a speed up system; if the ratio is > (ex. : ), it's 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 Dynamic or TwoPlane Balancing When considering dynamic balance, it is necessary to determine when dynamic balancing is recommended. To determine whether dynamic balancing is recommended, perform the following calculation or refer to the nomograph on the following page. D is Diameter in inches is ace Width in inches OR D is Diameter in millimeters is ace Width in millimeters The resultant RPM is maximum recommended operating rpm for a sheave or pulley with a single plane balance. Note: If the sheave or pulley is to be operated at a higher speed, a two plane balance is recommended. 3 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

28 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. xample: 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 Note: If not specified, Dynamic Balancing will be made to ISO grade 6.3 and for an operating speed of 8RPM Conventional Belt Sheaves, # of grooves B SUR TO SPCIY 33

29 A/B COMBINATION GROOV GROOVS Datum dia. O.D. Part List = up to 7.5 O.D. & inch thereafter Part List = 3/ inches A(L) B(5L) No Price No Price Belts Belts H Type B L Wt H Type B L Wt B3 6. B SH / /8 B3 38. B SH / / B36 7. B SH / /8 B36*. 7/3 6B SH / / B38 8. B SH / /8 B38*. 7/3 6B SH / / B 9. B SH / /8 B*. 7/3 6B SH / / 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. 6W SK / B /6 6A SDS 5/6 / 6 B W SK / B /6 6A SDS 5/6 / 7 B8 7. 6W SK / B /6 6A SDS 5/6 / 8 B A SK / B /6 6A SDS 5/6 / 9 B A SK / B9 6. 9/6 6A SDS 5/6 / 9 B A SK / B 76. 9/6 6A SDS 5/6 / B 9. 6A SK / B 9. 9/6 6A SDS 5/6 / B. 9/6 6A SK 7/ B /6 6A SDS 5/6 / 3 B36. 6A SK / B5 6. /6 5A SK 3/6 B A SK / B A SK B A SK / B /6 5A SK /6 8 B8. 6A SK / B 3. 3/6 5A SK /6 3 B 6. /6 6A S 7/ B /6 5A SK /6 B A S / B3. 7/6 6A S 3/ B38 8. /3 6A S 3/3 5 GROOVS 6 GROOVS Datum dia. O.D. Part List = inches Part List = 3/ inches A B No Price No Price Belts Belts H Type B L Wt H Type B L 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/ B 8. /6 B SD 3/6 7 6B 6. /6 B SD 3/ B 8. /6 B SD 3/6 7 6B. /6 B SD 3/ B6 86. B SD 3/6 9/6 7 6B6. B SD 3/6 5/ B8 9. B SD 3/6 9/6 9 6B8. B SD 3/6 5/ B5 9. B SD 3/6 9/6 6B5 6. B SD 3/6 5/ B5 9. B SD 3/6 9/6 6B5 8. B SD 3/6 5/ B5 96. B SK 6B5. B SK B B SK 6B56. B SK B58. B SK 6B58. B SK B6 6. B SK 6B6 6. B SK B6. B SK 6B6 3. B SK B6 6. B SK 6B6 3. B SK B66. B SK 5 6B B SK B68. B SK 6 6B68. B SK B7 3. B S 6 6B7 5. B S B7 5. B S 8 6B7. B S B8 5. W S 9 6B8 8. W S B86 6. W S 6B86. W S B9 68. A S B9 7. A S 6B9 3. W S B 9. A S 9 6B 8. A S B 8. A S 33 6B 76. A S B36. A S 39 6B /3 A S / B5 68. A S 3 6B5 3. 3/3 A S / B6 9. A S 6 6B6 38. A S B8 36. A S 5 6B /3 A S / B 39. 3/6 A 3/ B 6. 3/6 A 5/ B5 5. 3/6 A 3/6 8 6B /6 A 3/ B /6 A 3/6 3 6B /6 A 3/ B /6 A 3/6 69 6B38. 5/6 A 3/6 57 P.D. for A (L) Belts = Datum Dia = O.D.. P.D. for B (5L) Belts = O.D. * = These sheaves can only be reverse mounted with standard bushing bolts. Specials bolts (not provided by Maska) are required for standard mount. (see page ) QD bushings is a registered trademark and manufactured by Maska under license. 3 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

30 A/B COMBINATION Datum dia. A B O.D. Belts Belts GROOVS GROOVS Part List = inches Part List = 3 / inches No Price No Price H Type B L Wt H Type B L Wt 3B3. B SH / 3 B3 6. B SD 3/6 7/6 3B36 6. B SH / B B SD 3/6 7/6 5 3B38 8. B SH / B B SD 3/6 7/6 6 3B 5. 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 3B6 56. B SD 3/6 5/6 5 B6 76. B SD 3/6 3/6 7 3B8 58. B SD 3/6 5/6 6 B8 78. B SD 3/6 3/6 8 3B5 6. B SD 3/6 5/6 7 B5 8. B SD 3/6 3/6 8 3B5 6. B SD 3/6 5/6 7 B5 8. B SD 3/6 3/6 9 3B5 6. B SD 3/6 5/6 8 B5 8. B SD 3/6 3/6 3B B SD 3/6 5/6 9 B B SD 3/6 3/6 3B W SD 3/6 5/6 9 B W SD 3/6 3/6 3B6 7. W SD 3/6 5/6 B6 9. W SD 3/6 3/6 3B6 7. W SD 3/6 5/6 B6 9. W SD 3/6 3/6 3B6 76. W SD 3/6 5/6 B6 96. W SD 3/6 3/6 3B W SD 3/6 5/6 B66. W SD 3/6 3/6 3B68 8. W SD 3/6 5/6 B68. 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 S /6 38 3B6. /8 6A SK 3/ 3 B6. 3/6 A S /6 3B8. /8 6A SK 3/ B8 6. 3/6 A S /6 8 3B 3. 3/6 A S / B 36. 3/6 A S /6 6 3B5. 3/6 A S /6 76. B5 8. /6 6A /6 93 3B3 5. 3/6 A S /6 96 B3 56. /6 6A /6 3B A / 5 B A 6 Datum dia. A B O.D. Belts Belts GROOVS 8 GROOVS Part List = 5 inches Part List = 6 / inches No Price No Price H Type B L Wt H Type B L Wt P R 7B5 I B SK 3 8B5 8. B SK 3 5 7B56 B SK 5 8B56 8. B SK 3 7 7B58 C B SK 5 8B B SK 3 6 7B6 B S 8B6 9. B S 3 / 6 7B6 B S 6 8B6 96. B S 3 / 8 O 7B6 B S 7 8B6. B S 3 / 9 7B66 N B S 7 8B66 8. B S 3 / 7B68 B S 8 8B68. B S 3 / 7B7 R B S 8B7 6. B S 3 / 7B7 B S 3 8B7 8. B S 3 / 5 Q 8B /6 B 5/6 9 7B86 U B 3 8B /6 B 5/6 33 7B9 B 3 8B9 3. 5/6 B 5/6 36 7B B 36 8B /6 B 5/6 6 7B S W 8B 37. 5/6 W 5/6 53 T 7B36 A 9 8B36 5. A / 59 7B5 A 57 8B5 5. A / 69 7B6 A 7 8B /6 A 5/6 7 7B8 3/3 A 5/3 8 8B /3 A 7/3 8 7B 3/3 A 5/3 97 8B 69. 3/3 A 7/3 7B5 3/3 A 5/3 7 8B /3 A 7/3 5 7B3 3/3 A 5/3 55 8B3 6. 3/3 A 7/3 86 7B38 3/3 A 5/3 5 8B /3 A 7/3 All dimensions are to closest fraction or mounting instructions, see page 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 33 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.) B SUR TO SPCIY 35

31 A/B COMBINATION 9 GROOVS GROOVS Datum dia. O.D. Part List = 7 inches Part List = 7 3/ inches A B No Price No Price Belts Belts H Type B L Wt H Type B L 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 5/3 W S 3 7/3 8 B6 3. 3/ W S B6 5/3 W S 3 7/3 8 B6 3. 3/ W S B6 O 5/3 W S 3 7/3 9 B6 3. 3/ W S B66 N 5/3 W S 3 7/3 B / W S B68 5/3 W S 3 7/3 B / W S B7 R 5/3 W S 3 7/3 B / W S B7 5/3 W S 3 7/3 3 B / W S B8 Q B86 U 3/ W 8 B /6 W 3 / B9 3/ W 37 B9. /6 W 3 / B 3/ W 8 B 5. /6 W 3 / B S 3/ A 55 B 53. /6 W 3 /6 58 T B36 9/3 A 5/3 65 B /3 A 3 9/ B5 9/3 A 5/3 78 B /3 A 3 9/ B6 9/3 A 5/3 9 B /3 A 3 9/ B8 9/3 A 5/3 B8 8. 7/3 A 3 9/ B 9/3 A 5/3 B 86. 7/3 A 3 9/ B5 5/3 A 5/3 38 B5 6. 7/3 A 3 9/ B3 5/3 A 5/3 8 B /3 A 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 or mounting instructions, see page 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 33 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

32 C SCTION GROOV GROOVS Datum O.D. Part List = inches Part List = inches Dia. No Price No Price H Type B L Wt H Type B L Wt C6 6. /6 B S 5/ C7. 9/6 5B S /6 C7 3. B S C75. 9/6 5B S /6 C B S C8. 9/6 5B S /6 3. C8. B S C /6 5B S /6 5.6 C85 8. B S C9 3. 9/3 5W S /3 3 C9 5. W S C /3 5W S /3 8 C95 6. W S.. C. /6 6W S /6 C 76. W S C5 5. /6 6W S /6 C5 88. W S 3.. C 7. 7/3 5W S 3/3 5 C. W S 6.. C 8. /6 6W S /6 6 C. / 6W S 9/ C3. /6 6A S /6 8 C3 5. / 6A S 35.. C 6. /6 6A S /6 C 7. / 6A S C6 8. /6 6A S /6 C6 9. / 6A S C8 3. /6 6A S /6 3 C8 3. / 6A S 5.. C 3. /6 6A S /6 35 C 3. / 6A S 55.. C 36. /6 6A S /6 6.9 C 6. / 6A S C /3 5A / C3 6. 9/3 5A / GROOVS GROOVS Datum O.D. Part List = 3 inches Part List = inches Dia. No Price No Price H Type B L Wt H Type B L Wt C /6 B SD 3/6 / 9 C5 56. 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 S 5/6.3 C6 6. 3/6 B S 3 3/ C7. B S 6 C7 6. 3/ B S C75 8. B S 8 C / B S C8 56. /6 B /6 C /6 B 3/ C /6 B /6 C /6 B 3/ C9 88. /6 B /6 6 C9. 5/6 B 3/ C95. /6 W /6 9.8 C /6 B 3/ C. /6 W /6 3 C. 5/6 B 3/ C5 3. /6 W /6 37 C5 6. 5/6 W 3/ C. /6 W /6 39 C 7. 5/6 W 3/6... 3C 5. /6 W /6 3. C 3. 5/6 W 3/ C3 9. /6 A /6 5 C /6 A 3/ C 3. /6 A /6 5 C 36. 5/6 A 3/ C6 33. /6 A /6 6 C6. 5/6 A 3/ C8 35. /6 A /6 63 C8 3. 5/6 A 3/ C. /6 6A 3/6 8 C 5. 7/6 A 5/ C 8. /6 6A 3/6 9.7 C 56. 3/3 A / C /3 5A 5/3 6 C /3 A / C3 6. 3/3 5A 5/3 3. C /3 A / C /3 5A 5/3 59 C36. 5/3 A 9/ C 7. 3/3 5A 5/3 9 C 8. 7/3 A J / C5 9. 3/3 5A 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 or mounting instructions, see page 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 33 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.) B SUR TO SPCIY 37

33 C SCTION 5 GROOVS 6 GROOVS Datum O.D. Part List = 5 inches Part List = 6 inches Dia. No Price No Price H Type B L Wt H Type B L Wt C6 7. /6 B S 3 5/6 6 6C6. /6 B S 3 5/ C7 76. /8 B S / 3 6C7 8. /8 B S 3 / C75. /8 B S / 5 6C75 6. /8 B S 3 / C /6 B 7/6 8 6C8 8. 5/6 B 7/ C /6 B 7/6 3 6C /6 B 7/ C /6 B 7/6 36 6C /3 B 7/ C /6 B 7/6 6C /3 B 7/ C 76. 5/6 W 7/6 6C 38. 7/3 B 7/ C /6 W 7/6 6C /3 B 7/ C 33. 5/6 W 7/6 7 6C /3 W 7/ C /6 W 7/6 55 6C. 7/3 W 7/ C /6 A 7/6 55 6C3. 7/3 A 7/ C 38. 5/6 A 7/6 6 6C 8. 7/3 A 7/ C6 3. 5/6 A 7/6 73 6C6 5. 7/3 A 7/ C8 8. 5/6 A 7/6 83 6C /3 A 7/3.. 5C 6. 3/3 A /3 9 6C 6. 3/3 A / C 6. 3/3 A /3 9 6C 7. 3/3 A / C /3 A /3 9 6C /3 A J 3/ C3 8. 3/3 A /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 GROOVS GROOVS Datum O.D. Part List = 9 inches Part List = inches Dia. No Price No Price H Type B L Wt H Type B L Wt P C8 3/6 B 9/6 37 C8 6. 3/6 B 5 9/6 6.3 R C85 I 3/6 B 9/6 7 C /6 B 5 9/ C9 C 5/3 B J 3/3 9 C9 5. 5/3 B J 3 3/ C95 9C 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 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 /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 or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 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 33 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

34 C SCTION 7 GROOVS 8 GROOVS Datum O.D. Part List = 7 inches Part List = 8 inches Dia. No Price No Price H Type B L Wt H Type B L Wt C7 3/3 B S 3 9/3 3 8C7 3. 3/3 B S 3 3/ P C8 3/6 B 9/6 3 8C /6 B 3 9/ R C85 I 3/6 B 9/6 38 8C85. 3/6 B 3 9/ C9 C 3/3 B /3 5 8C9. 3/3 B / C95 3/3 B /3 53 8C95. 3/3 B / C 3/3 B /3 58 8C 3. 3/3 B / C5 3/3 B /3 58 8C5 5. 3/3 B /3 7 O.... 7C 7C N 3/3 3/3 B B /3 / C 8C /3 3/3 B B /3 / C3 7C R 3/3 3/3 W A /3 / C3 8C /3 3/3 W A /3 / C6 3/3 A /3 98 8C6 7. 3/3 A /3 Q C8 3/3 A /3 8C /3 A / C U 5/3 A J 3/3 33 8C 87. 5/3 A J 3 3/ C 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 GROOVS Datum O.D. Part List = inches Dia. No Price H Type B L 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 or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 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 33 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.) B SUR TO SPCIY 39

35 D SCTION 3 GROOVS GROOVS Datum O.D. Part List = inches Part List = 6 /6 inches Dia. No Price No Price H Type B L Wt H Type B L Wt..6 3D 56. 9/3 W 3/3 6 D 6. 3/3 W / D3 6. 9/3 W 3/3 7 D3 6. 3/3 W / D /3 W 3/3 76 D /3 W / D 6. 9/3 W 3/3 79 D 68. 3/3 W / D /3 W 3/3 8 D /3 W / D5 7. 9/3 W 3/3 89 D5 8. 3/3 W / D /3 W 3/3 9 D /3 W / D /3 A 3/3 95 D6 8. 3/3 A / 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 Mº 6 3/ 3/ D. 7/3 6A J /3 75 D. 9/3 A Mº 6 3/ 3/ GROOVS 8 GROOVS Datum O.D. Part List = inches Part List = 3/6 inches Dia. No Price No Price H Type B L Wt H Type B L Wt..6 7D 5/3 B J 3 3/3 9 8D. 5/3 B J 5 5/ D3 P 5/3 B J 3 3/3 5 8D3 6. 5/3 B J 5 5/ D35 R 5/3 B J 3 3/3 6 8D /3 B J 5 5/ D I 5/3 W J 3 3/3 73 8D 3. 5/3 B J 5 5/ D5 C 5/3 W J 3 3/3 85 8D /3 B J 5 5/ D5 5/3 W J 3 3/3 65 8D /3 W J 5 5/ D55 O 5/3 W J 3 3/3 7 8D55. 5/3 W J 5 5/ D6 N 5/3 W J 3 3/3 8 8D /3 W J 5 5/ D7 5/3 W J 3 3/3 95 8D /3 W J 5 5/ D8 R 7/3 W Mº 6 3/ 5/3 35 8D8 8. 9/3 W Mº 6 3/ 5/ D 7/3 A Mº 6 3/ 5/3 5 8D. 9/3 A Mº 6 3/ 5/ D Q 9/3 A Mº 6 3/ 3 /3 5 8D 6. 9/3 A Mº 6 3/ 5/ D7 U 9/3 A Mº 6 3/ 3 /3 35 8D /3 A Mº 6 3/ 5/ D33 9/3 A Mº 6 3/ 3 /3 8D /3 A Mº 6 3/ 5/3..6 7D S /8 A Mº 6 3/ /8 55 8D 37. /8 A Nº 8 /8 3 9/ D8 T /8 A Nº 8 /8 /8 75 8D8 3. /8 A Nº 8 /8 3 9/ D58 /8 A Nº 8 /8 /8 89 8D /8 A Nº 8 /8 3 9/6 P.D. for D Belts same as O.D. All dimensions are to closest fraction B : Bushing size or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 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 33 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.) OR DPNDABL VBLTS, SHAVS AND BUSHINGS

36 D SCTION 5 GROOVS 6 GROOVS Datum O.D. Part List = 7 inches Part List = 8 5/6 inches Dia. No Price No Price H Type B L Wt H Type B L Wt..6 5D 78. 7/3 W /3 89 6D 96. 9/3 B J 7/ D3 8. 7/3 W /3 6D /3 B J 7/ D /3 W /3 5 6D35. 9/3 B J 7/ D 86. 7/3 W /3 6D. 9/3 B J 7/ D5 9. 7/3 W /3 8 6D5. 9/3 B J 7/ D5 9. 7/3 W /3 5 6D5 6. 9/3 W J 7/ D /3 W /3 3 6D /3 W J 7/ D /3 A /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 Mº 6 3/ 9/ D7 7. 9/3 A Mº 6 3/ 5/3 5 6D7 9. 9/3 A Mº 6 3/ 9/ D /3 A Mº 6 3/ 5/3 3 6D /3 A Mº 6 3/ 9/ D 7. 9/3 A Mº 6 3/ 5/3 6D 98. 9/3 A Mº 6 3/ 9/ D /3 A Mº 6 3/ 5/3 55 6D /3 A Mº 6 3/ 9/ D /3 A Mº 6 3/ 5/3 6 6D /3 A Mº 6 3/ 9/ GROOVS GROOVS Datum O.D. Part List = 3 / inches Part List = /6 inches Dia. No Price No Price H Type B L Wt H Type B L Wt..6 9D 9/3 B Mº 6 3/ 7/3 55 D 5. /3 B Mº 6 3/ 5 9/ D3 P 9/3 B Mº 6 3/ 7/3 9 D3 58. /3 B Mº 6 3/ 5 9/ D35 R 9/3 B Mº 6 3/ 7/3 D /3 B Mº 6 3/ 5 9/3..6 9D I 9/3 B Mº 6 3/ 7/3 7 D 7. /3 B Mº 6 3/ 5 9/ D5 C 9/3 B Mº 6 3/ 7/3 5 D5 8. /3 B Mº 6 3/ 5 9/ D5 9/3 B Mº 6 3/ 7/3 63 D5 86. /3 B Mº 6 3/ 5 9/ D55 9/3 B Mº 6 3/ 7/3 8 D /3 B Mº 6 3/ 5 9/ D6 O 9/3 B Mº 6 3/ 7/3 3 D6 9. /3 B Mº 6 3/ 5 9/ D7 N 9/3 W Mº 6 3/ 7/3 89 D7 8. /3 B Mº 6 3/ 5 9/ D8 9/3 W Mº 6 3/ 7/3 7 D8. /3 W Mº 6 3/ 5 9/3 93 R..6 D 38. /3 A Mº 6 3/ 5 9/ D Q 9/3 A Mº 6 3/ 5 7/3 3 D 8. 9/3 A Mº 6 3/ 6 / D7 U 9/3 A Mº 6 3/ 5 7/3 375 D /3 A Mº 6 3/ 6 / D33 /8 A Nº 8 / D /3 A Nº 8 /8 5 7/ D /8 A Nº 8 / D 3. /3 A Nº 8 /8 5 7/3 68 S D8 T 3/6 A Nº 8 /8 3 /6 8 D /6 A Pº 9 5 / D58 3/6 A Pº 9 3 /6 D /6 A Pº 9 5 /8 5 GROOVS Datum O.D. Part List = 7 9/6 inches Dia. No Price H Type B L Wt..6 D /3 B Mº 6 3/ 7 7/ D /3 B Mº 6 3/ 7 7/ D /3 B Mº 6 3/ 7 7/ D /3 B Mº 6 3/ 7 7/ D5. 3 9/3 B Mº 6 3/ 7 7/ D5. 3 9/3 B Mº 6 3/ 7 7/ D /3 B Mº 6 3/ 7 7/ D6. 3 9/3 B Mº 6 3/ 7 7/ D /3 W Mº 6 3/ 7 / D8. 3 5/3 W Mº 6 3/ 7 / D /3 W Mº 6 3/ 7 7/3..6 D 98. 9/3 A Mº 6 3/ 7 7/ D7 36. /8 A Nº 8 /8 7 5/ D /8 A Nº 8 /8 7 5/ D 5. 3/6 A Pº D /6 A Pº D /6 A Pº P.D. for D Belts same as O.D. All dimensions are to closest fraction B : Bushing size or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 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 33 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.) B SUR TO SPCIY

37 3V SCTION GROOV GROOVS O.D. Datum Part List = /6 up to.6 O.D. incl. Part List = 3/3 inches Dia. No Price and 3/6 inch thereafter No Price H Type B L Wt H Type B L 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.65* 3. 5/6 6B JA 3/ V /6 6B JA 9/6.7 3V.8* 3. 5/6 6B JA 3/ V3.. 9/6 6B JA 9/6.7 3V3.* 3.8 5/6 6B JA 3/ V /6 6B JA 9/6.7 3V3.5* 3. 5/6 6B JA 3/ V /6 6B JA 9/6. 3V3.35* 35. 6B SH / / V B SH / /6.3 3V3.65* 36. 6B SH / / V B SH / /6.8 3V.. 9/3 6B SH / / V B SH / /6. 3V.5. 9/3 6B SH / / V B SH / /6. 3V /3 6B SH / / V B SH / /6.9 3V /3 6B SH / / V B SH / / V /3 6B SH / / V B SH / / V /3 6B SH / / V6.. 6W SH / / V /3 6W SH / / V6.5. 6W SH / /6.9 3V W SDS 5/6 5/ V W SH / / V W SDS 5/6 5/ V8. 6. /6 6A SDS 5/6 /6 5. 3V A SDS 5/6 5/ V.6. /6 6A SDS 5/6 / V.6. 5A SK 5/ V.. 3/6 5A SK / 5.3 3V. 7. 5A SK 5/ V9.. 9/3 5A SK 5/ V9.. 3/6 5A SK / V /6 5A S 3/ GROOVS GROOVS O.D. Datum Part List = inches Part List = 9/3 inches Dia. No Price No Price H Type B L Wt H Type B L Wt V.65* B JA. 3V.65*. 6B JA 9/ V.8* B JA.3 3V.8*.8 6B JA 9/ V3.** 38.8 B SH / /.6 3V3. 3. B SH / / V3.5**. B SH / /. 3V3.5.8 B SH / / V3.35*. 9/6 6B SH / 3/6.8 3V3.35* 6. 6B SH / 5/ V3.65*. 9/6 6B SH / 3/6. 3V3.65* 8. 6B 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 A SK / 9.8 3V / 6A SK 9/ V A SK /. 3V.6 8. / 6A SK 9/ V. 8. 6A SK / 9. 3V. 96. / 6A SK 9/ V /6 6A S 5/6 3. 3V /6 6A S / V5.. 3/6 6A S 5/ V5.. 7/6 6A S / V /3 6A S 7/ V /3 6A /6 9. P.D. for 3V Belts same as O.D. **or 33V3.: =.9 **or 33V3.5: = * = These sheaves can only be reverse mounted with standard bushing bolts. Specials bolts (not provided by Maska) are required for standard mount. (see page ) All dimensions are to closest fraction B : Bushing size or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. QD bushings is a registered trademark and manufactured by Maska under license. OR DPNDABL VBLTS, SHAVS AND BUSHINGS

38 3V SCTION 5 GROOVS 6 GROOVS O.D. Datum Part List = 5/6 inches Part List = 3/3 inches Dia. No Price No Price H Type B L Wt H Type B L 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 6. 63V /3 B SK V /3 B SK 3/ V /6 B SK 3/ V /6 B SK V /6 B SK 3/ V /6 B SK V /6 B SK 5/ V /3 B SK 3/3.5 63V6.9. 7/6 B SK 3/ V8. 9. /6 W SK.5 63V8.. /6 W SK 5/ V /3 A SK 9/ V.6. 5/3 A S 9/ V. 3. 3/3 6A S 3/ V. 8. 3/3 A S V /3 A S 7/ V /3 6A / V /6 6A / V5. 5. /3 6A / V A / V /3 A /6.6 8 GROOVS GROOVS O.D. Datum Part List = 3 7/3 inches Part List = /3 inches Dia. No Price No Price H Type B L Wt H Type B L 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 S 7/3 9. 3V8. 9. /6 W S / V.6. 5/6 A S 7/3.5 3V.6 5. W 3/ V. 8. /8 6A /3.9 3V. 3. A 3/ V9.. /8 6A / V9. 7. A 3/ V /6 6A 3/3 9. 3V /6 A 5/ V /3 6A 53. 3V33.5. /6 A 5/3 8. P.D. for 3V Belts same as O.D. All dimensions are to closest fraction B : Bushing size or mounting instructions, see page 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 33 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.) B SUR TO SPCIY 3

39 5V SCTION O.D. Datum Dia. GROOVS 3 GROOVS Part List = /6 inches Part List = inches No Price No Price H Type B L Wt H Type B L Wt..3 5V.* 73. 6B 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/ V.9 9. B SDS 5/6 / V /3 6B SDS 5/6 9/3.8 35V 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.. 6B SK 3/6.6 35V7. 8. /6 6B S 7/ V7.5. 6B SK 3/6. 35V /6 6B S 7/ V8.. 6B SK 3/6.3 35V8.. /6 6B S 7/ V B SK 3/ V /6 6B S 7/ V B SK 3/ V9. 5. /6 6B S 7/ V9.5. 6W SK 3/ V /6 6W S 7/ V W SK 3/ V /6 6W S 7/ V W SK 3/ V.3 7. /6 6W S 7/ V W SK 3/6.8 35V /6 6W S 7/ V A SK 3/ V.3 8. /6 6A S 7/ V A SK 3/ V.8 9. /6 6A S 7/ V A S /6.8 35V.5. /6 6A 7/ V A S /6. 35V3.. /6 6A 7/ V. 3. 5A S /6.8 35V. 58. /6 6A 7/ V A S / V5. 7. /6 6A 7/ V A S / V6. 8. /6 6A 7/ V A S / V /6 6A / V. 6. 5A S / V.. /6 6A 7/ V /6 5A V /3 6A 3/ V /6 5A V /6 6A / V /3 5A 9/ V /3 5A 9/ V /3 5A 9/3 8. O.D. Datum Dia. GROOVS 5 GROOVS Part List = 3 /6 inches Part List = 3 3/ inches No Price No Price H Type B L Wt H Type B L Wt..3 5V. 9. 5/3 6B SD 3/6 9/ V.. /6 B SD 3/ V /6 B SD 3/6 5/ V.65. /6 B SD 3/ V.9. B SD 3/ V.9 6. B SD 3/6 5/ V5.. B SD 3/ V5.. B SD 3/6 5/ V B SD 3/ V B SD 3/6 5/ V5.9. B SD 3/6. 55V B SK V B SK /6.7 55V6.3. B SK V B SK / V B S / V7.. B S /6.5 55V /6 B S 7/ V B S / V /6 B S 7/ V B 7/ V /6 B 3/ V B 7/6.7 55V /6 B 3/ V9. 6. B 7/6. 55V /6 B 3/ V B 7/ V9.5. 5/6 B 3/ V B 7/ V /6 B 3/ V.3. W 7/ V.3. 5/6 W 3/ V.9 6. W 7/ V.9. 5/6 W 3/ V.3. W 7/ V.3. 5/6 W 3/ V.8 6. W 7/ V.8. 5/6 W 3/ V.5 3. W 7/ V /6 W 3/ V A 7/ V /6 W 3/ V. 9. A 7/6. 55V. 3. 5/6 A 3/ V5. 3. A 7/ V /6 A 3/ V6. 3. A 7/ V6.. 5/6 A 3/ V /6 A / V /3 6A 3/ V. 5. 3/6 6A V /3 6A / V /3 6A 3/ V /3 6A / V8. 6. /3 6A 3/ V /3 6A / V /3 5A 7/3. 55V /6 6A J 5/ V37.5. /3 6A 3/ V A J / V /6 5A J V A J /8 39. P.D. for 5V Belts same as O.D. * = These sheaves can only be reverse mounted with standard bushing bolts. Specials bolts (not provided by Maska) are required for standard mount. (see page ) 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 33 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.) OR DPNDABL VBLTS, SHAVS AND BUSHINGS

40 5V SCTION O.D. Datum Dia. 6 GROOVS 8 GROOVS Part List = 7/6 inches Part List = 5 3/6 inches No Price No Price H Type B L Wt H Type B L Wt..3 65V.. /6 B SD 3/6 3 5/ V.65. /6 B SD 3/6 3 5/ V.9 6. B SD 3/ V5. 3. B SD 3/ V B SD 3/ V5.9. B SK / V B SK / V /6 B S V /6 B S V /6 B S 3/ V /6 B S.8 85V /6 B S 3/ V /6 B /.3 85V8. 6. /6 B / V /6 B / 7. 85V /6 B / V9.. 9/6 B / V /6 B / V9.5. 9/6 B / 3. 85V /3 B 5/ V /6 B / V /3 B 5/ V /6 W / 3. 85V.3 3. /3 B 5/ V /6 W / V /3 B 5/ V /6 W / V /3 W 5/ V /6 W /. 85V /3 W 5/ V /3 W 9/ V /3 W 5/ V /3 W 9/ V3.. /3 W 5/ V /3 W 9/ V. 8. /3 W 5/ V5.. 7/3 A 9/ V /3 A 5/ V /3 A 9/ V6. 6. /3 A 5/ V /3 A 3/ V /3 A J 3/3.. 65V /3 6A / 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 O.D. Datum Dia. Part No List Price GROOVS = 7 3/6 inches H Type B L Wt V /6 B 3/ V /6 B 3/ V /3 B 7/ V /3 B 7/ V /3 B 7/ V /3 B 7/ V /3 B 7/ V.3. 3/3 B 7/ V /3 W 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 33 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.) B SUR TO SPCIY 5

41 8V SCTION O.D. Datum Dia. GROOVS 5 GROOVS Part List = inches Part List = 6 inches No Price No Price H Type B L Wt H Type B L Wt.5.3 8V.5 5. /3 6W 9/ V /6 W 5/ V /3 6W 9/ V /6 W 5/ V. 56. /3 6W 9/ V. 66. /6 W 5/ V /3 6W 9/3 7 58V /3 W 9/ V /3 6A 9/3 8 58V /3 A 9/ V7. 7. /3 A 7/ V /3 A J 9/ V /3 A 7/3 5 58V /3 A J 9/ V /3 6A 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 O.D. Datum Dia. 6 GROOVS 8 GROOVS Part List = 7 /8 inches Part List = 9 inches No Price No Price H Type B L Wt H Type B L Wt V /3 W 3/ V /3 B J 7/ V /6 W 7/ V3. 8. /3 B J 7/ V. 7. /6 W 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 / V /6 5A N 8 /8 3/6 5 88V / A P 9 / V / A P 9 / V / 5A P V / A P 9 / V / 5A P V7.. A W 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 33 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

42 8V SCTION O.D. Datum Dia. GROOVS GROOVS Part List = inches Part List = 3 inches No Price No Price H Type B L Wt H Type B L 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 / V / A P V / A P 9 / V / A P V. 5. / A P 9 / V.5 9. / A P V / A P 9 / V / A P V A W V A W /8 3 8V A W V A W /8 8V63.. A W V7. 5. A W /8 77 8V7. 3. A W 9 P.D. for 8V Belts same as O.D. All dimensions are to closest fraction B : Bushing size or mounting instructions, see page Suffix on type indicates construction: A = arms; B = block; W = web. Note: MNPW bushings are standard mounting only. See page 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 33 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.) B SUR TO SPCIY 7

43 TIMING PULLY & HTD SPROCKT NOMNCLATUR 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 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

44 TIMING PULLY PRODUCT ATURS: Synchronized noslip transmission No lubrication required Compact design High efficiency Low maintenance, economical operations 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 lange or Belts /, 5/6 & wide /5 pitch (L37) ace width () = 9/6 Wt PL37PB PL37PB PL37PB PL37PB P5L37PB / / / / / 9/6 3/6 3/6 3/6 / / /* /* 5/6* * 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 / / 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 3/6* 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; = flanges Weight for all items is approximate. B SUR TO SPCIY 9

45 TIMING PULLY L Pitch Part No List Price ($) Bushing Number of Teeth Pitch Diam. Diameters O.D. Sprocket lange or belts wide pitch (L5) ace Width () = 3/ Dimensions (inches) Bore Range Type I.D. K M N H Min. Max. Wt PL5PB PL5PB P3L5PB PL5PB P5L5PB /8 7/3 5/6 * *3/ *3/ * * P6L5PB P7L5PB P8L58 PL58 PL B B B /3 /3 /3 5/3 5/3 5/3 9/6 3/3 * * /8 /8 / PL58 **PL5 P6L5 P8L5 **P3L B B B B B /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 B B W W W 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; = flanges All dimensions are to the closest fraction. Weight for all items is approximate OR DPNDABL VBLTS, SHAVS AND BUSHINGS

46 TIMING PULLY L Pitch NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Part No List Price ($) Bushing Number of Teeth Pitch Diam. Diameters O.D. Sprocket lange or Belts 3/ wide pitch (L75) ace width () = Dimensions (inches) Bore Range Type I.D. K M N H Min. Max. Wt PL75PB P3L75PB PL75PB P5L75PB P6L75PB /8 7/3 5/6 *3/ *3/ * * * P7L75PB P8L758 PL758 PL758 PL B B B B 3/6 3/6 3/6 5/3 5/3 5/3 63/6 * /8 /8 /8 / P6L75 P8L756 P3L756 P3L756 PL B B B B B 3/6 63/6 63/6 63/6 63/6 3/6 3 3/6 / /6 /6 /6 / P8L75 P6L75 P7L75 P8L B 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 / or Belts wide pitch (L) ace width () = / P3LPB PLPB P5LPB P6LPB /3 5/6 *3/ * * * P7LPB P8L8 PL8 PL8 PL B B B B 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 B B B B 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 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; = flanges Weight for all items is approximate. B SUR TO SPCIY 5

47 TIMING PULLY H Pitch Part No List Price ($) Bushing Number of Teeth Pitch Diam. Diameters O.D. Sprocket lange or Belts wide pitch (H) ace width () = / Dimensions (inches) Bore Range Type I.D. K M N H Min. Max. Wt *PH8 *P6H8 *P8H *PH B B B B 7/6 7/6 5/6 5/6 5/3 5/3 63/6 63/6 /8 /8 / / PH6 PH6 P6H P8H B B B B 9/3 9/3 5/6 5/6 63/6 63/6 3/6 3/6 /6 /6 /8 / P3H P3H57 PH57 P8H B B W W 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 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 / or Belts wide pitch (H5) ace width () = 3/ PH58 P6H58 P8H5 PH B B B B 63/6 63/6 5/3 5/3 5/3 5/3 63/6 63/6 /8 /8 / / PH56 PH5 P6H5 P8H B B B B 5/3 9/3 9/3 9/3 63/6 3/6 3/6 3/6 /6 /8 /8 / P3H5 P3H557 PH557 P8H B B W W 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 / * ace width () = 7/3 ** ace width () = /3 All dimensions are to the closest fraction. Suffix on type indicates construction: A= arms; B= block; W= web; = flanges Weight for all items is approximate. 5 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

48 TIMING PULLY H Pitch Part No List Price ($) Bushing Number of Teeth Pitch Diam. Diameters O.D. Sprocket lange or Belts wide pitch (H) ace width () = 9/3 Dimensions (inches) Bore Range Type I.D. K M N H Min. Max. Wt P6H8 P8H PH PH B B B B 9/6 9/6 9/6 5/3 63/6 63/6 63/6 /8 / / / PH P6H P8H P3H B B B B 7/6 7/6 7/6 7/6 3/6 3/6 3/6 3/6 /8 /8 /8 / P3H57 PH57 P8H3 *P6H B W B 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/ or Belts 3 wide pitch (H3) ace width () = 3 5/6 P6H38 P8H3 PH3 PH B B B B 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 B B B /6 /6 /6 /6 3/6 3/6 3/6 3/6 /6 /6 /6 /6 /8 /8 /8 / P3H357 PH357 **P8H33 **P6H B W B 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/ * ace width () = /3 ** ace width () = 3 All dimensions are to the closest fraction. Suffix on type indicates construction: A= arms; B= block; W= web; = flanges Weight for all items is approximate. B SUR TO SPCIY 53

49 HTD SPROCKT 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. NW: Warehouse Innovation Colorcoded product labels for easy stock retrieval on shelves. Product eatures 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 lange K L M Min. Max. or Belts 3/ (mm) wide 8mm pitch (8M) ace width () = /8 Wt *P8MJA P68MJA *P88ML P38ML P38ML JA JA L L L B B B B B 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 B B B B B / / / / 5/6 5/6 / / / / 5/6 5/6 /8 /8 /8 /8 /8 /8 /6 /6 /6 / P568MSDS P68MSDS P78MSDS P88MSDS P98MSDS SDS SDS SDS SDS SDS W W W W W 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 /8 /8 /8 /8 / or Belts 3/6 (3mm) wide 8mm pitch (8M3) ace width () = *P8M3JA P68M3JA *P88M3L P38M3L P38M3L P38M3SH JA JA L L L SH B B B B /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 B W W 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/ * These parts are made of steel. Suffix on type indicates construction: A = arms; B = block; W = web; = flanges All dimensions are to the closest fraction. Weight for all items is approximate. 5 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

50 HTD SPROCKT 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 lange K L M Min. Max. or Belts (5mm) wide 8mm pitch (8M5) ace width () = Wt P88M5JA P38M5JA P38M5L P38M5SH P368M5SH P388M5SH JA JA L SH SH SH B B B /3 /8 /8 /8 /3 / / / /6 / / / / / /6 /6 / P8M5SH P8M5SD P88M5SD P568M5SK P68M5SK SH SD SD SK SK B B B B W /8 /8 /8 / / 9/6 9/6 9/6 9/6 / 3/6 3/6 / /6 /6 3/ 3/ / P78M5SK P88M5S P98M5S P8M5S P8M5 P98M SK S S S W W W A A A / / / / /6 /6 9/6 9/6 9/6 9/6 3/ 7/6 7/6 5/6 5/6 5/ or Belts 3 5/6 (85mm) wide 8mm pitch (8M85) ace width () = 3 3/ P38M85SH P368M85SH P388M85SH P8M85SD P8M85SD SH SH SH SD SD /6 9/6 / / / / / 3/6 3/6 /6 /6 / P88M85SD P568M85SK P68M85S P78M SD SK S /6 7/6 7/6 / / / /6 3/6 7/6 7/6 / P88M85 P98M85 P8M85 P8M85 P98M W W A A 9/3 9/3 9/3 /6 /6 /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; = flanges Weight for all items is approximate. B SUR TO SPCIY 55

51 HTD SPROCKT 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. K L M Min. Max. Diam. Sprocket lange or Belts (mm) wide mm pitch (M) ace width () = /8 P8MSK P9MSK P3MSK P3MSK P3MSK SK SK SK SK SK B B B B B /6 /6 7/6 7/6 7/6 3/6 3/ P36MS P38MS PMS PM P8M S S S B B B B B 3/6 3/6 7/6 7/6 7/6 / / 5/6 5/6 5/6 5/6 5/ P5M P56M P6M P6M P68M B B B W W 3/6 3/6 3/6 3/6 3/6 / / / / / 5/6 5/6 5/6 5/6 5/ P7M P8M P9M PM PM W W A A A 3/6 3/6 3/6 3/6 3/6 / / / / / 5/6 5/6 5/6 5/6 5/ or Belts 3/6 (55mm) wide mm pitch (M55) ace width () = 3/ P8M55SK P9M55SK P3M55SK P3M55SK P3M55SK SK SK SK SK SK B B B B B /6 /6 /6 /6 /6 3/ 3/ 3/ 3/6 3/6 5/6 5/6 5/ P36M55S P38M55S PM55S PM55 P8M55 P5M S S S B B B B B B /6 /6 /6 3/ 3/ 3/ 9/6 9/6 9/6 3/6 3/6 3/6 5/6 5/6 5/ P56M55 P6M55 P6M55 P68M55 P7M55 P8M B B W W W W /3 /3 /3 /3 9/6 9/6 /8 /8 /8 /8 7/3 7/3 7/3 7/ P9M55 PM55 PM55 P68M55 P9M55 P6M55 All dimensions are to the closest fraction Suffix on type indicates construction: A = arms; B = block; W = web; = flanges Weight for all items is approximate. OR DPNDABL VBLTS, SHAVS AND BUSHINGS A A A A A A /3 /3 /3 /3 /3 /3 /8 /8 /8 /8 /8 /8 7/3 7/3 7/3 7/3 7/3 7/

52 HTD SPROCKT mm Pitch Part Nº List Price ($) Bushing Number of Teeth Pitch Diam. Diameters O.D. Sprocket lange or Belts 3 5/6 (85mm) wide mm pitch (M85) ace width () = *P8M85SK *P9M85SK P3M85SK P3M85SK P3M85SK SK SK SK SK SK Dimensions (inches) Bore Range Type I.D. K L M Min. Max /6 3/6 9/6 9/6 9/6 5/6 5/6 9/6 9/6 9/6 Wt P36M85S P38M85S PM85S PM85 P8M85 P5M S S S /6 9/6 9/6 /8 /8 /8 3/6 3/6 3/6 7/6 7/6 7/6 / / / 5/6 5/6 5/ P56M85 P6M85 P6M85 P68M85 P7M85 P8M B B B W W W 5/3 5/3 5/3 5/3 5/3 5/3 3/ 3/ 3/ 3/ 3/ 3/ 7/3 7/3 7/3 7/3 7/3 7/ P9M85 PM85 PM85 P68M85J P9M85J P6M85J J J J A A A A A A 5/3 5/3 5/3 3/ 3/ 3/ 3/3 3/3 3/3 7/3 7/3 7/3 7/6 7/6 7/ or Belts (5mm) wide mm pitch (M5) ace width () = 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/ P36M5S P38M5S PM5S PM5 P8M5 P5M S S S /6 3/6 3/6 3/ 3/ 5/3 3/6 3/6 /6 /6 /6 5/3 5/6 5/6 5/ P56M5 P6M5 P6M5J P68M5J P7M5J P8M5J J J J J B B B W 5/3 5/3 3/3 3/3 3/3 3/3 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 /6 /6 /6 6 3/ 6 3/ 6 3/ 5/3 5/3 5/3 3/3 3/3 3/3 7/6 7/6 7/ or Belts 6 /6 (7mm) wide mm pitch (M7) ace width () = 7 P36M7S P38M7S PM7S PM7 P8M7 P5M S S S / / / 3/6 3/6 7/3 3 /6 3 /6 3 /6 7/6 3 /8 3 /8 3 /8 5/6 5/6 7/3 5/6 5/6 5/ P56M7 P6M7J P6M7J P68M7J P7M7J P8M7J J J J J J W 7/3 3/3 3/3 3/3 3/3 3/3 7/6 /8 /8 /8 /8 /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; = flanges All dimensions are to the closest fraction. Weight for all items is approximate. B SUR TO SPCIY 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/

53 JAWTYP COUPLING Completely Interchangeable The most commonly used coupling for a wide variety of applications. Product eatures: conomical asy 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. ach 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 6 for Insert lement ssentials. Coupling and Insert lements 58 Coupling Part No. L35* () L5* () L7 L75 L9 L95 L99 L L L5 L9 L5 List Price ($) (per flange) Insert lements NBR (Rubber) Urethane Hytrel Wt. Bronze Part No. List Price Part No. List Price Part No. List Price lbs. Part No. List Price Wt. lbs. L35N* () L5N* () L7N L75N L995N L995N L99N L99N LN L5N L9N L5N L5U* () L7U L75U L995U L995U L99U L99U LU L5U L9U L5U L5H* () L7H L75H L995H L995H L99H L99H LH L5H L9H L5H *Important: NOT SOLD INDIVIDUALLY. These parts are packaged to a box OR DPNDABL VBLTS, SHAVS AND BUSHINGS L5B* () L7B L75B L995B L995B L99B L99B LB L5B L9B L5B

54 JAWTYP COUPLING Spider Inserts Coupling Dimensions Part No. Type Outside Diameter A Hub Diameter HD Overall Length B Distances between langes C Length thru Bore D Set Screw Qty. Size & Length Tightening Torque in.lbs Min. Bore Max. Wt. Lbs (Avg.) Approx WR lbsin L35* L5* L7 /6 3/6 3/3 9/3 5/3 7/6 3/ #63 x /8 / x 3/6 / x / /8 (mm) 3/6 (5mm) 3/6 (7mm) (8mm) (6mm) 3/ (9mm) L75 L9 L95 3/ /8 /8 /8 9/6 33/6 33/6 33/6 3/6 3/6 / x / x 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 /6 5/68 x 5/68 x 6 x 5/ /6 (mm) 7/6 (mm) (6mm) 3/6 (3mm) (35mm) (mm) L5 L9 L5 3 3/ 5 / 5 5 3/ 3/6 6 x 3 x 3 x (6mm) 3/ (9mm) 3/ (3mm) (8mm) /8 (55mm) (65mm) *Important: NOT SOLD INDIVIDUALLY. These parts are packaged to a box. Insert Materials Accomodates Coupling L35 L5 L7 Max. RPM 3 8 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.. Angular misalignment is the difference between and max. (Refer to igure above) B SUR TO SPCIY 59

55 JAWTYP 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 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 /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 7/6 5/6 x 5/3 x 3/6 x 3/6 5/6 x 5/3 x 3/6 9/6 /6 3/ 3/ x 3/6 x 3/6 x 3/6 x 3/6 7/6 x 7/3 3/6 5/6 /6 x / x / x / x / x / /8 3/6 / x / x / x / x 5/6 x 5/6 = Stock = Price on Request 6 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

56 JAWTYP COUPLING Insert lement ssentials 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 lement 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 + to + C 3 to +6 3 to +7 C 6 to +5 5 to C to +5 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 VRY GOOD ORANG.5 55D LOW CLLNT BIG. NIL CLLNT 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. B SUR TO SPCIY 6

57 JAWTYP COUPLING Maska Starflex Selection Selection Process: We will present two different ways of selecting the proper coupling namely, the torque design and the HP design. a) Calculating the Torque Design of your application: Torque Design = (HP x Service actor* x 635) RPM b) Determine the HP RPM of your application: HP Design = (HP x Service actor* x ) RPM * Using the Service actor Table (see pg. 68); select the Service actor that corresponds the closest to your application. ) Using the lement Characteristics Chart (see pg.6) select the insert material that corresponds the closest to your application. 3) Using the Coupling Rated Torque and HP Ratings Chart below, locate the appropriate insert material column. Skim this column to the first entry where the torque value or the RPM value is greater or equal to the value calculated in step. Once this value is located, refer to the corresponding coupling size in the first column of the chart. Refer to the maximum RPM value in the Insert Material Chart (see pg.59) for this insert torque capability in order to validate that the application requirements are met. If the requirement is not met at this point, another coupling type may be required for the application. Contact our technical support for assistance. ) Verify in the Coupling Dimension Chart (see pg.59) that your driver and driven shaft dimenstions are smaller or equal to the maximum bore size available on the coupling selected. If the coupling bore size is not large enough for the shaft diameter, select the next largest coupling that will fit the driver/driven shaft diameter. Coupling Rated Torque & HP Ratings Spider Materials NBR Urethane Hytrel & Bronze Coupling Torque Torque Torque inlbs. Nm RPM inlbs. Nm RPM inlbs. Nm RPM L35 L5 L L75 L9 L L99 L L Note: Maximum RPM for bronze spiders is 5 RPM. 6 L5 L9 L OR DPNDABL VBLTS, SHAVS AND BUSHINGS

58 JAWTYP COUPLING Maska Starflex Selection Selection xample: A coupling is needed to join a 5 HP electric motor (75 RPM) to a mixer. The shaft size of the motor is " and the mixer is ". There are no particular environmental factors to take into account. Less than.5 of misalignment is expected. a) Determine the Torque Design: Based on the proper chart, the application service factor for an electric motor driving a mixer is.5. Torque Design = (HP x Service actor x 635) = (5 x.5 x 635) = 8.3 inlbs. RPM 75 b) Determine the HP RPM: HP RPM = (HP x Service actor x ) = (5 x.5 x ) =.86 HP RPM 75 ) Select the insert element: Since there are no particular environment factors or excessive operating temperatures, and less than.5 of angular misalignment, as per the lement Characteristics chart, the NBR insert material is sufficient for this application. 5) Select the coupling size: Using the Coupling Rated Torque and HP ratings chart, skim down the NBR column to the first item that is greater or equal to the Design Torque: 8.3 inlbs. or to the RPM:.86 HP. or this application, the L5 coupling with a Nominal Torque rating of inlbs. and a RPM of.967 HP is the proper coupling. Referring to the Insert Material chart, the maximum RPM of 75 on the electric motor does not exceed the 5 RPM maximum allowed for the L5 sized coupling with a NBR insert. 6) Verify the driver/driven shafts size: The electric motor has a shaft size of " and the mixer has a shaft size of ". Because the maximum bore of the L5 is less than the mixer shaft size, the L5 coupling if insufficient for this application. Continuing down the maximum bore column in the chart, the L9 size has a maximum bore size of /8" which is able to accommodate the driver/driven shaft sizes. The required coupling size for this application is a Starlex L9 with a NBR insert. B SUR TO SPCIY 63

59 MASKAL LASTOMRIC LMNT COUPLINGS SOLV PROBLMS O: MISALIGNMNT ND LOAT SHOCK LOADS ORING: QUICK INSTALLATION LOW MAINTNANC TROUBL R PRORMANC lexible elastomeric element asy to Assemble 6 OR DPNDABL VBLTS, SHAVS AND BUSHINGS

60 MASKAL COUPLINGS LASTOMRIC LMNT STANDARD TIR IN NATURAL RUBBR The standard unit normally supplied is designed for temperatures between C and + 8 C. Max. angular misalignment: Max. axial misalignment: see Table, page 68 Max. parallel misalignment: see Table, page 68 HOW TO ORDR YOUR COUPLING PRI SIGNIICATIONS *M Complete coupling = flanges bushtype + tire M flange only bushtype P Tire only (lement) *Please note that when ordering a complete coupling online on our web site, you must order the flanges and tire separately. B SUR TO SPCIY 65

61 Cross References MASKAL COUPLINGS MASKAL Maska HIL Maurey *PARAL Dodge MARTINL Martin M5JA 5JA P5 5 JA M6SH 6SH P6 6 JA M7SDS 7SH P7 7 SH M8SK 8SDS P8 8 SDS M9SK 9SK P9 9 SK MS S P S MS S P S M P M P N/A M6J N/A P6 N/A MJ N/A P N/A * Paraflex Couplings are designed for use with taperlock bushings. 66 OR DPNDABL VBLTS, SHAVS AND BUSHINGS