U.S. Tsubaki Inc. - TFS Series Cam Clutch

TFS Series Cam Clutch is a sprag type clutch designed for press fit installation. Sprag type designs typically have a higher torque capacity than a similarly sized ramp & roller type clutch. TFS has two vertical keyways on the outer race to assist with locating. Outside dimensions are the same as Series 63 ball bearings. This design is ideal for general inner or outer race overrunning applications. Since the TFS Series does not include an integral bearing, installing the TFS Cam Clutch next to a bearing which handles both the axial and radial loads is the typical application.

Unit of Measure

Items	TFS12 TFS-12 mm Bore Cam Clutch	TFS15 TFS-15 mm Bore Cam Clutch	TFS17 TFS-17 mm Bore Cam Clutch	TFS20 TFS-20 mm Bore Cam Clutch	TFS25 TFS-25 mm Bore Cam Clutch
Bore Size	N/A 0.472 in12.00 mm	N/A 0.591 in15.00 mm	N/A 0.669 in17.00 mm	N/A 0.787 in20.00 mm	N/A 0.984 in25.00 mm
Torque Capacity	N/A 13.3 lb·ft18.0 N·m	N/A 20.7 lb·ft28.0 N·m	N/A 36.9 lb·ft50.0 N·m	N/A 62.0 lb·ft84.0 N·m	N/A 94.4 lb·ft128.0 N·m
Max. Overrunning Inner Race	N/A 4500 rpm	N/A 3500 rpm	N/A 3200 rpm	N/A 2500 rpm	N/A 2000 rpm
Max. Overrunning Outer Race	N/A 2300 rpm	N/A 1800 rpm	N/A 1600 rpm	N/A 1300 rpm	N/A 1000 rpm
Drag Torque	N/A 0.030 lb·ft0.04 N·m	N/A 0.044 lb·ft0.06 N·m	N/A 0.081 lb·ft0.11 N·m	N/A 0.133 lb·ft0.18 N·m	N/A 0.140 lb·ft0.19 N·m
Keyway	N/A 4 x 1.8 mm	N/A 5 x 1.2 mm	N/A 5 x 1.2 mm	N/A 6 x 1.6 mm	N/A 8 x 2.0 mm
A (Overall Width)	N/A 0.512 in13.00 mm	N/A 0.709 in18.00 mm	N/A 0.748 in19.00 mm	N/A 0.827 in21.00 mm	N/A 0.945 in24.00 mm
B (Overall Diameter)	N/A 1.378 in35.00 mm	N/A 1.654 in42.00 mm	N/A 1.850 in47.00 mm	N/A 2.047 in52.00 mm	N/A 2.441 in62.00 mm
C (Outer Race I.D.)	N/A 1.181 in30.00 mm	N/A 1.417 in36.00 mm	N/A 1.496 in38.00 mm	N/A 1.772 in45.00 mm	N/A 2.047 in52.00 mm
D (Inner Race I.D.)	N/A 0.709 in18.00 mm	N/A 0.866 in22.00 mm	N/A 0.866 in22.00 mm	N/A 1.063 in27.00 mm	N/A 1.378 in35.00 mm
E (Chamfer)	N/A 0.024 in0.60 mm	N/A 0.031 in0.80 mm	N/A 0.047 in1.20 mm	N/A 0.047 in1.20 mm	N/A 0.047 in1.20 mm
F (Chamfer)	N/A 0.012 in0.30 mm	N/A 0.012 in0.30 mm	N/A 0.031 in0.80 mm	N/A 0.031 in0.80 mm	N/A 0.031 in0.80 mm
G (Slot Width)	N/A 0.157 in4.00 mm	N/A 0.197 in5.00 mm	N/A 0.197 in5.00 mm	N/A 0.236 in6.00 mm	N/A 0.315 in8.00 mm
H (Slot Depth)	N/A 0.055 in0.06 mm	N/A 0.071 in0.07 mm	N/A 0.091 in0.09 mm	N/A 0.091 in0.09 mm	N/A 0.110 in0.11 mm
Weight	N/A 0.150 lb0.068 kg	N/A 0.264 lb0.120 kg	N/A 0.330 lb0.150 kg	N/A 0.484 lb0.220 kg	N/A 0.792 lb0.360 kg