Needle Roller Bearings

Roller Clutches

Manufactured similarly to the drawn cup bearings, roller clutches utilize the same low profile sectional height. The units are compact, light weight and operate directly on a hardened shaft. Proper mounting is easily accomplished with a simple press fit in the housing. Each unit consists of a thin-walled, drawn outer ring with a series of ramps on the inside diameter, plastic cages, springs and needle rollers.

Drawn cup roller clutches transmit torque between the shaft and the housing in one direction and allow free overrun in the opposite direction. When transmitting torque, the shaft or the housing can be the input member. The individual spring retention of the needle rollers ensures constant contact between the shaft, the needle rollers and the ramps. Applications are generally described as indexing, backstopping or overrunning.

ROLLER CLUTCH INTERCHANGE
INA Torrington NSK
DIMENSIONS Clutch Designtation
Fw D C Plastic
Springs
Steel
Springs
Plastic
Springs
Steel
Springs
Plastic
Springs
Steel
Springs
inch mm inch mm inch mm
0.118 3 0.256 6.5 0.236 6 HF0306KF
0.118 3 0.142 3.6 0.315 8 HFL0308 --
0.157 4 0.315 8 0.236 6 HF0406KF --
0.157 4 0.315 8 0.236 6 HF0406KFR --
0.157 4 0.315 8 0.236 6 FC-4-K
0.157 4 0.315 8 0.315 8 HFL0408 --
0.236 6 0.394 10 0.315 8 HF0608KF
0.236 6 0.394 10 0.472 12 HF0612KF HF0612 FCS-6
0.236 6 0.394 10 0.472 12 HF0612KFR HF0612R FC6K
0.236 6 0.472 12 0.394 10 HF061210
0.236 6 0.394 10 0.591 15 HFL0615KF HFK0615
0.236 6 0.394 10 0.591 15 HFL0615KFR HFL0615R
0.236 6 0.394 10 0.472 12 -- HFL061012K
0.250 6.35 0.437 11.112 0.500 12.7 RC040708
0.315 8 0.472 12 0.472 12 HF0812KF HF0812 FCL-8-K
0.315 8 0.472 12 0.472 12 HF0812KFR HF0812R
0.315 8 0.472 12 0.394 10 -- HF061210
0.315 8 0.551 14 0.394 10 -- HF081410
0.315 8 0.630 16 0.394 10 -- HF081610
0.315 8 0.551 14 0.472 12 -- HF081412 FC8
0.315 8 0.472 12 0.472 12 -- HFL081212K
0.315 8 0.551 14 0.472 12 -- HFL081412K
0.315 8 0.472 12 0.866 22 HFL0822KF HFL0822
0.315 8 0.472 12 0.866 22 HFL0822KFR HFL0822R
0.375 9.525 0.625 15.875 0.500 12.7 RC061008
0.375 9.525 0.625 15.875 0.875 22.22 RCB061014
0.394 10 0.551 14 0.472 12 HF1012KF HF1012 FCL-10-K
0.394 10 0.551 14 0.472 12 HF1012KFR HF1012R
0.394 10 0.551 14 0.866 22 HFL1022KF HFL1022
0.394 10 0.551 14 0.866 22 HFL1022KFR HFL1022R
0.394 10 0.630 16 0.472 12 FC-10
0.472 12 0.709 18 0.630 16 -- HF1216 FC-12
0.472 12 0.709 18 1.024 26 -- HFL1226
0.500 12.7 0.750 19.05 0.500 12.7 RC081208
0.500 12.7 0.750 19.05 0.875 22.22 RCB081214
0.551 14 0.551 14 0.787 20 FCB8
0.551 14 0.787 20 0.630 16 -- HF1416 FC14K
0.551 14 0.787 20 1.024 26 -- HFL1426
0.625 15.875 0.875 22.225 0.625 15.88 RC101410
0.625 15.875 0.875 22.225 1.000 25.4 RCB101416
0.630 16 0.630 16 0.787 20 FCB10
0.630 16 0.866 22 0.630 16 -- HF1616 FC-16
0.630 16 0.866 22 1.024 26 -- HFL1626
0.709 18 0.709 18 1.024 26 FCB12
0.709 18 0.945 24 0.630 16 -- HF1816
0.709 18 0.945 24 1.024 26 -- HFL1826
0.750 19.05 1.000 25.4 0.625 15.88 RC121610
0.750 19.05 1.000 25.4 1.000 25.4 RCB121616
0.787 20 1.024 26 0.630 16 -- HF2016 FC-20
0.787 20 1.024 26 1.024 26 -- HFL2026
0.866 22 0.866 22 1.024 26 FCB16
0.984 25 1.260 32 0.787 20 -- HF2520 FC-25
0.984 25 1.260 32 1.181 30 -- HFL2530
1.000 25.4 1.313 33.338 0.625 15.88 RC162110
1.000 25.4 1.313 33.338 1.063 26.99 RCB162117
1.024 26 1.024 26 1.024 26 FCB20
1.181 30 1.457 37 0.787 20 -- HF3020 FC-30
1.181 30 1.457 37 1.181 30 -- HFL3030
1.260 32 1.260 32 1.181 30 FCB25
1.378 35 1.654 42 0.787 20 -- HF3520 FC35
1.378 35 1.654 42 1.181 30 -- HFL3530
1.457 37 1.457 37 1.181 30 FCB30
1.654 42 1.654 42 1.181 30 FCB35
***This chart is intended as a reference only. The users should consult with the listed manufacturers’ catalogs to establish dimensional interchangeability. NPB cannot be held responsible for any errors contained herein.