CP Racks. Pinions. Table of Contents. Catalog Number of KHK Stock Gears. Pinions S SCP Pinions. Racks K RGCP 5-500

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1 Table of ontents pecial haracteristics, oints of aution in electing and Using acks & inions... page 0 T Tapered inions. T Tapered acks... page 2. round pur ears... page 4 ()(D) round acks... page 4 pur ears... page ()(D) acks. Thermal efined acks... page 8 U tainless teel pur ears. U(D) tainless teel acks... page 190 O ound acks... page 192 Metal lexible acks... page 192 Number of H tock ears Numbers of H stock gears are based on simple principles as follows. lease order H gears by specifying their Numbers. (Example) acks & inions inions of teeth () ircular pitch (2.5mm) 5 acks & inions inions 45 (45-D) U U3, U4 M4 Type ( pur ear) (45) Type pur ears round pur ears round inion hafts T Tapered inions acks 5-0 Total length (0mm) ircular pitch (5mm) Type ( round ack) acks 45 M4 U U4 0 Type D D O T (M4) acks acks with Machined Ends acks with Bolt Holes round acks round acks with Machined Ends round acks with Bolt Holes ound acks Tapered acks with Machined Ends 179

2 acks & inions or Accurate ositioning in Linear Motion Applications. haracteristics H stock racks and pinions are suitable in applications where very accurate positioning in linear motion is required. or your convenience, we offer circular pitches of 2.5 to mm and in lengths of 0 to 00mm. ( is available to 00mm) Movement of one cycle of - on rack vs. 3- (m3) on m3 rack 1/2 turn =0mm m3=141.37mm One turn =0mm m3=282.74mm About acks & inions The reference pitch of a metric module is computed by multiplying the number of module by p (3.149). or example, the reference pitch of m3 rack is 9.4mm (3 p). When using a rack and a pinion in a linear motion application, the fact that the pitch is not an integral number presents a difficulty in accurate positioning. This problem is solved by racks and pinions where one rotation of a pinion moves it precisely, 0, 0,... or 0mm. The difference in movement of one rotation of a tooth vs. 3 spur gear is illustrated on the right. Difference between and m 3 Main haracteristics of acks & inions < acks > itch =mm m3=9.4mm itch mm Length mm ( ) denotes no. of teeth Heat treatment Tooth surface finish recision H 001 ( ) denotes JI B grades Main characteristics T 5, D traightened & annealed 4 By pairing with T pinion, the backlash may be adjusted. ()(D) NOTE1 5, 0, 0,00 M4 Thermal refining round 1 High strength and abrasion-resistant for precision linear motion. 5, 00 M4 Thermal refining 4 Increased strength with M4 material which is thermal refined. ()(D) NOTE1 2.5, 5,,, 0, 00, 00, D traightened & annealed 4 Widely applicable due to low cost and large selection of pitches and lengths. U(D) 5, 00 U4 olution treatment 5 uitable for food machinery due to U4 material s rust-resistant quality. O 2.5, 5, 0 45-D traightened & annealed 4 onvenient in applications where the rack has reciprocal motion. 5 00, 00, ut continuously. Long length and deformable to a contour. <inions> T 5, (~) M4 Thermal refining (N8) By paring with T rack, the backlash may be adjusted. () NOTE2 5, (~) 45 Induction hardened teeth ( is thermal rifined) round (N7) erform secondary operations to suit your requirement on these ground spur gears. 2.5, 5,,, (~) 45 - (N8) Widely applicable due to low cost and large selection of pitches and numbers of teeth. U 5, (~) U3 - (N8) uitable for food machinery due to U3 material s rust-resistant quality. NOTE 1: The catalog numbers in the above table with () on the end have both ends machined so that they can be butted against each other to make any desired length. The items with (D) have mounting screw holes for easier assembly. NOTE 2: The pinions with () are pinion shafts. 0

3 H Technical Information election Hints It is important to thoroughly understand the contents of the product tables as well as AUTION notes before making the selection. In addition, read the section below as well as 1. aution in electing the Mating ears, 3. electing acks by recison, 4. aution with egard to the pecial haracteristics, and 5. Other oints to onsider in the election rocess in the H stock rack section starting on page 5, and election Hints of spur gears on pages 27 and 28. aution in electing ears Based on ear trength The gear strength values shown in the product pages were computed by assuming a certain application environment. Therefore, they should be used as reference only. We recommend that each user computes his own values by applying the actual usage conditions. The table below contains the assumptions established for these products in order to compute gear strengths. alculation of Bending trength <acks> Item ormula NOTE 1 of teeth of mating gears D D O T U UD <inions> () T ormula of spur and helical gears on bending strength (JMA1-01) ame number teeth U otation Durability Impact from motor Impact from load Direction of load Allowable root bending stress σlim NOTE 2 afety factor 0min -1 0min -1 0min -1 Over 7 cycles Uniform load Uniform load Bidirectional 21.33kgf/mm kgf/mm 2 7kgf/mm 2 14 (1.7) kgf/mm 2 19kgf/mm kgf/mm 2 7kgf/mm alculation of urface Durability (Except those in common with bending strength) ormula NOTE 1 inematic viscosity of lubricant ear support Allowable Hertz stress σhlim afety factor H ormula of spur and helical gears on surface durability (JMA2-01) upport on one end 0ct ( ) 1. ymmetric support by bearings 79kgf/mm kgf/mm kgf/mm 2 90 (99) kgf/mm kgf/mm 2 49kgf/mm kgf/mm 2 NOTE 1: The gear strength formula is based on JMA (Japanese ear Manufactures Association) specifications. The units of number of rotations (min -1 ) and the stress (kgf/mm 2 ) are adjusted to the units needed in the formula. NOTE 2: ince the load is bidirectional, the allowable bending stress at root σlim is set to 2/3 of the value. Application Hints When using H stock racks and pinions, please carefully read the Application Hints of the rack section starting on page 5. 5 (m1.592) and (m3.3) are very close in size to m1.5 and m3 respectively. The piece marking should be verified to make sure that the item is correct. Examples of fastening methods of metal flexible racks are shown below. Example of H ear Applications ixed by flat head screw ixed by spot welding Automatic material handling equipment ( racks & pinions) (top view) 1

4 T Tapered inions.t Tapered acks ircular itches 5, T Tapered inion 5 eference mating position T hape acks & inions T T5 - T5 - T5 - T5-5(1.59) 5(1.59) 5(1.59) 5(1.59) of teeth Bore Hub dia. itch dia. Outside dia. (major) Outside dia. (minor) ace width Hub width Total length Distance traveled z AH7 B D D' E in one turn Note Ṡ T T Tapered inion T- T- T- T NOTE 1: The amount denotes the distance in mm tapered pinion travels on the racks in one revolution T Tapered ack T 5-00 T-00 05(1.59) (3.31) Total length ace width Height (major) Height (minor) eference mating height eference position A B ' D E Effective of teeth 0 0 Adjustable backlash: Moving the pinion axially by 1mm changes the backlash by 0.05mm or example 5-00 & 5- Backlash value 0.1~0.2 T5-00 & T5- Backlash value 0.05 or less. Moving the pinion axially by 1mm changes the backlash by 0.05mm Tapered inion Tapered ack * NOTE: The above backlash values are the theoretical values. * NOTE: Tapered rack& pinion are not interchangeable with H stock racks and pinions. * NOTE: Different modules, number of teeth, ground gear versions and custom-made items are available as special orders. 2

5 Tapered acks & inions T pecifications eference mating position recision grade ressure angle JI N8 grade (JI B1702-1: 1998) OLD JI 4 grade (JI B1702: 197) Thermal refining only urface treatment econdary Operations 2~2HB Black oxide ut Bore ossible T pecifications T hape recision grade ressure angle H 001 grade 4 tandard full depth 45-D tress relief annealing urface treatment econdary Operations 89~95HB Black oxide ut Bottom surface ossible eference face width Adjustable width eference position Allowable torque (N.m) NOTE 2 Allowable torque (kgf.m) hape H I J urface durability urface durability T T T T (04.01)(0.34) (05.52)(0.0) (07.07)(0.893) (.28)(1.34) Backlash (mm) Note 3 0 ~ 0. 0 ~ 0. 0 ~ 0. 0 ~ T5 - T5 - T5 - T5 - acks & inions T T T T T (32.1) (03.14) (44.1) (05.1) (5.) (07.8) (82.3) (14.13) 0 ~ ~ ~ ~ T- T- T- T- NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. NOTE 3: The backlash values shown in the table are the theoretical values when these gears and the T Tapered acks are in mesh. Ṡ T hape T T Allowable force (N) NOTE Allowable force urface durability urface durability (233) (04.7) (933) (190.0) T 5-00 T-00 NOTE4: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. 3

6 () round pur ears ()(D) round acks ircular itches 5~ hape 5 round inion hafts 7 hape acks & inions (1.59) 5(1.59) 5(1.59) oefficient of profile shift of teeth haft dia. haft length (L) itch dia. Outside dia. ace width haft length () Total length Distance NOTE 1 traveled in one turn NOTE 2 z x A B D E Ṡ Ṣ.. D round inion hafts NOTE 3-0 NOTE round pur ears 5(1.59) 5(1.59) 5(1.59) 5(1.59) round pur ears 5~ round acks A B D z AH7 B D E 05(1.59) (1.59) 5 5 5~ round acks Type 05(1.59)) NOTE 1: lease see the ground pur gears section for the center distance table of profile shifted gears. of teeth Bore Hub dia. itch dia. Outside dia. ace width Hub width Total length Total length ace width Height Height to pitch Line NOTE 2: The amount denotes the distance in mm the spur gear travels on the rack in one revolution. Effective of teeth hape Allowable force (N) NOTE 5 Distance traveled in one turn NOTE 2 Allowable force urface durability urface durability (0373.2) (1493.0) (8.8) (.1) (0373.2) (1493.0) (8.8) (.1) NOTE 3: These racks may be used as the joining gauges for the ground racks with machined ends. (0373.2) (1493.0) (8.8) (.1) 5~ round acks Type D D 5-0 D-0 05(1.59) 0 0 Total length ace width Height Height to pitch Line Mounting hole dimension NOTE 4 Effective A B D of teeth E of mounting holes 4 4 Mounting screw size M05 M NOTE 4: The dimensions E and have the general tolerance. 4

7 round pur ears, round acks pecifications *W is saw blade finish. hape hape (Type ) hape (Type D) recision grade ressure angle urface treatment JI N7 grade (JI B1702-1: 1998) OLD JI 3 grade (JI B1702: 197) tandard full depth 45 Induction hardened teeth 48~53H Black oxide except ground surfaces round for gear grinding Bore econdary Operations ossible except tooth area ()(D) JI N7 grade (JI B1702-1: 1998) OLD JI 3 grade (JI B1702: 197) H 001 grade 1 tandard full depth tandard full depth 45 M4 Tooth induction hardened after thermal refining Thermal refining only 48~53H 2~285HB Black oxide except ground surfaces round haft (round portion) ossible except tooth area round Bottom surface ossible hape hape Allowable torque (N.m) NOTE 5 urface durability urface durability Allowable torque (kgf.m) (1.883) (2.929) (3.3) (09.23) (12.5) (19.5) (2.41) (2.822) (3.) (5.2) (1.41) (22.57) (28.95) (38.84) (0.1) (1.00) (1.55) (2.824) (4.29) (8.129) (0.97) (1.28) (1.87) (3.4190) (.719) (.91) (.99) (27.09) Backlash (mm) 0.04 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ NOTE 5: The allowable torque values shown in the table are the calculated values according to the assumed usage conditions. NOTE : The backlash values shown in the table are the theoretical values when these gears are meshed with racks. Allowable torque (N.m) NOTE 5 Allowable torque (kgf.m) urface durability urface durability NOTE Backlash (mm) NOTE acks & inions Ṡ Ṣ.. D ounterbore and hole dimentions Allowable force (N) NOTE 7 Allowable force hape H I J urface durability urface durability (0373.2) (1493.0) (8.8) (.1) D 5-0 D-0 NOTE 7: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details

8 pur ears ircular itches 2.5~ hape acks & inions 2.5 (m ) (m 1.59) (0.7958) 2.5(0.7958) 2.5(0.7958) 2.5(0.7958) 5(1.59) 5(1.59) 5(1.59) 5(1.59) of teeth Bore Hub dia. itch dia Outside dia ace width Hub width Total length Distance traveled in one z AH7 B D E turn NOTE hape (m 3.31) (m 4.774) (4.774) (4.774) (4.774) (m.32) (.32) (.32) (.32) AUTION: and spur gears are similar in appearance and dimensions. lease check the identifying marking before use. NOTE 1: The amount denotes the distance in mm that a pinion travels on the rack in one revolution

9 pur ears pecifications recision grade ressure angle JI N8 grade (JI B1702-1: 1998) OLD JI 4 grade (JI B1702: 197) tandard full depth 45 urface treatment Less than 194HB Black oxide ut Bore econdary Operations ossible Allowable torque (N.m) NOTE Allowable torque (kgf.m) urface durability urface durability (0.3709) (0.54) (0.54) (0.95) (2.22) (3.3) (3.928) (5.7) (0.02) (0.03) (0.0494) (0.09) (0.1343) (0.2191) (0.32) (0.5888) Backlash (mm) NOTE 3 0. ~ ~ ~ ~ ~ ~ ~ ~ acks & inions (17.81) (24.51) (31.43) (45.8) (1.7) (1.883) (2.77) (5.094) 0.14 ~ ~ ~ ~ (.79) (091.91) (7.90) (04.474) (07.7) (.9) 0.19 ~ ~ ~ (142.5) (19.1) (1.4) (.01) (1.41) (24.) 0.21 ~ ~ ~ NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. NOTE 3: The backlash values shown in the table are the theoretical values when these gears are meshed with racks. 7

10 ()(D) acks Thermal efined acks ircular itches 2.5~ hape hape (Type ) *W is saw blade finish. acks & inions. Ṡ Ḍ 2.5~ 5-0 NOTE 1-0 NOTE 1-0 NOTE 1-0 NOTE ~ Type (1.59).0(3.31).0(4.774).0(.32) 02.5(0.7958) 05.0(1.59).0(3.31) 05(1.59) (4.774) (.32) 05(1.59) (4.774) (.32) 05(1.59) (4.774) (.32) Total length ace width Height Height to pitch Line Effective A B D of teeth hape Allowable force (N) NOTE urface durability Allowable force (0233.) (047.7) (0933.) (190.70) ( ) (41.70) ( ) (72.70) (0077.7) (014.53) (0233.) (047.7) (0933.) (190.70) (0233.3) (0933.1) (2333.0) (3732.0) (0233.3) (0933.1) (2333.0) (3732.0) (0233.3) (0933.1) (2333.0) (3732.0) urface durability NOTE 1: These racks may be used as the joining gauges for the ground racks with machined ends. (047.7) (190.70) (41.70) (72.70) (047.7) (190.70) (41.70) (72.70) (047.7) (190.70) (41.70) (72.70) 5~ Type D D 5-00 D-00 D-00 D-00 D 5-00 D-00 D-00 D-00 D 5-00 D-00 D-00 D-00 05(1.59) (4.774) (.32) 05(1.59) (4.774) (.32) 05(1.59) (4.774) (.32) A B D of teeth E ~ Type Thermal efined Total length ace width Height Height to pitch Line Effective Mounting hole dimensions NOTE of mounting holes Mounting screw size M05 M M14 M1 M05 M M14 M1 M05 M M14 M1 NOTE 2: The dimensions E and have the general tolerance (1.59) Total length ace width Height Height to pitch Line Effective A B D of teeth 0 0 hape Allowable force (N) NOTE urface durability Allowable force urface durability (0373.2) (5.8) (1493.0) (45.7) 8

11 acks ()(D) pecifications recision grade ressure angle H 001 grade 4 tandard full depth 45-D tress relief annealing urface treatment Less than 95HB Black oxide ut Bottom surface econdary Operations ossible hape (Type D) pecifications recision grade H 001 grade 4 2~285HB NOTE 4 tandard full depth urface treatment ressure angle M4 ut Bottom surface Thermal refining only econdary Operations ossible NOTE 4: Due to the decarburization layer of about 0.5mm thickness, the rectangular surfaces have less than HB7 hardness. acks & inions. Ṡ Ḍ H I J ounterbore and hole dimensions hape Allowable force (N) NOTE urface durability Allowable force (0233.3) (0933.1) (2333.0) (3732.0) (0233.3) (0933.1) (2333.0) (3732.0) (0233.3) (0933.1) (2333.0) (3732.0) urface durability (047.7) (190.70) (41.70) (72.70) (047.7) (190.70) (41.70) (72.70) (047.7) (190.70) (41.70) (72.70) D 5-00 D-00 D-00 D-00 D 5-00 D-00 D-00 D-00 D 5-00 D-00 D-00 D-00 NOTE 3: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details

12 U tainless teel pur ears ircular itches 5~ hape 5 (m 1.59) acks & inions U Ṡ U5- U5- U5- (m 3.31) U- U- U- 5(1.59) 5(1.59) 5(1.59) of teeth Bore Hub dia. itch dia. Outside dia. ace width haft length () Total length Distance traveled in one z AH7 B D E turn NOTE AUTION: U and U spur gears are similar in appearance and dimensions. lease check the identifying marking before use. NOTE 1: The amount denotes the distance in mm that a pinion travels on the rack in one revolution hape U. U U(D) tainless teel acks ircular itches 5~ D hape (Type ) 5~ U 5-00 U-00 05(1.59) Total length A B D ace width Height Height to pitch Line Effective of teeth 0 0 hape 5~ UD 5-00 UD-00 05(1.59) *The blue catalog numbers indicate the new products. Total length ace width Height Height to pitch Line Effective A B D of teeth E Mounting hole dimensions 0 0 of mounting holes Mounting screw size M05 M 190

13 tainless teel pur ears pecifications recision grade JI N8 grade (JI B1702-1: 1998) OLD JI 4 grade (JI B1702: 197) tandard full depth urface treatment Less than 7HB ressure angle U3 ut Bore econdary Operations ossible *Available on special order: ame gears made in U4. Allowable torque (N.m) NOTE 2 Allowable torque (kgf.m) urface durability urface durability Backlash (mm) NOTE (1.2) (1.93) (2.171) (0.0954) (0.5) (0.228) 0.09 ~ ~ ~ U5- U5- U5- acks & inions (09.843) (13.5) (17.370) (0.8219) (1.3380) (1.9) 0.14 ~ ~ ~ U- U- U- NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. NOTE 3: The backlash values shown in the table are the theoretical values when these gears are meshed with U racks. tainless teel acks pecifications U Ṡ U. U hape (Type D) recision grade ressure angle H 001 grade 5 tandard full depth U4 NOTE 4 olution treatment urface treatment Less than 7HB assivation NOTE 4: Although U have rust-resistant quality, they are not 0% rust proof. lease exercise caution. ut Bottom surface econdary Operations ossible D Allowable force (N) NOTE Allowable force urface durability urface durability (1.3) (445.3) (02.82) (7.) U 5-00 U-00 H ounterbore and hole dimensions I J hape Allowable force (N) NOTE Allowable force urface durability urface durability (1.3) (445.3) 191 (02.82) (7.) UD 5-00 UD-00 NOTE 5: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details.

14 O ound acks ircular itches 2.5~ pecifications 2 hape *W is saw bale finish. recision grade ressure angle urface treatment econdary Operations H 001 grade 4 tandard full depth 45-D tress relief annealing 89~95HB Black oxide ut ossible 2.5~ acks & inions O Ḟ O2.5-0 O 5-0 O (0.7958) 5.0(1.59) (3.31) Total length A dh9 D Outside dia. Height to pitch line (048.28)(009.34) (18.)(033.0) (73.70)(132.0) NOTE 1: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. Effective of teeth Metal lexible acks ircular itch 5 hape Allowable force (N) NOTE 1 Allowable force urface durability urface durability pecifications 3 hape recision grade ressure angle urface treatment Toth surface finish econdary Operations H 001 grade 8 tandard full depth 0 鈍 Less than 7HB Black oxide ut Bottom surface ossible (1.59) 5(1.59) 5(1.59) Total length ace width Height NOTE 2 A B D Height to pitch line E (81.5) (81.5) (81.5) AUTION: When using the metal flexible rack with a tooth pinion, allow a minimum radius of curvature of 0mm for the teeth on the exterior and 0mm for the teeth in the interior side. AUTION: These metal flexible racks are not suitable for applications where positioning accuracy is required. NOTE 1: The allowable forces shown in the table are the calculated values according to the assumed usage conditions. lease see page 1 for more details. 0 0 NOTE 2: The tolerance of the height () is -0. and the tolerance of the width of the base () is Thickness of base Width of flange NOTE2 Effective of teeth hape Allowable force (N) NOTE 1 Allowable force