Clutches
Clutches transmit or cut rotation between two power transmission shafts.
The line-up includes Cam Clutches (one-way clutches) and SR Clutches (single-revolution clutches). Cam Clutches are mechanical non-backlash structures with a number of cams arranged between the inner and outer races and are available for three different applications: backstop, overrun and indexing.
With a simple lever operation, SR Clutch can give a single or an integer revolution at the correct timing from the continuously rotating outer race (drive side) to the inner race (load side).
What's New / Product Information
Cam Clutch (One-way Cam Clutches )
When it comes to mechanical One-Way Clutches, Tsubaki Cam Clutch is the best
This is a mechanical one-way clutch. It uses multiple cams arranged so that there is no backlash.
Cam clutches have three applications: backstop, overrun, and indexing.
SR Clutch (Single Revolution clutch )
SR Clutches provide a single or integer revolution from the continually rotating outer race (drive side) to the inner race (load side) by simply pulling a lever.
Because the inner and outer races are designed to engage, the clutch transmits highly reliable and accurately timed drive motions not possible with clutches based on friction mechanisms, ratchet mechanisms, or pin and key mechanisms.
Product Lineup for Clutches
The SR Clutch is lever-operated to impart one turn or an integral number of turns from the outer race (drive) to the inner race (load).
SR Series (Indirect type )
Model No. SR～
Compatible with a broad range of operating conditions.
- ・Excellent responsiveness ：
The mechanism provides outstanding responsiveness with a full cylindrical outer race inner face (drive side). The inner and outer races engage/disengage quickly when the lever is switched on or off. - ・Secure engagement ：
There is no slippage with the wedge-shaped rollers engaging between the inner and outer races. - ・Consistent stopping position ：
The off (disengaged) position is always constant, so there are no cumulative stopping position errors. - ・Exceptional durability ：
Long service life can be achieved as there are multiple rollers taking torque, less parts to wear between the components, and a high-precision finish.
Range of
Shaft Diameters mm
Φ15～Φ40
Torque range N・m
24.5～392
SRD Series (Direct type )
Model No. SRD～
Economical model suitable for loads that have a flywheel effect, such as small power presses.
- ・Excellent responsiveness ：
The mechanism provides outstanding responsiveness with a full cylindrical outer race inner face (drive side). The inner and outer races engage/disengage quickly when the lever is switched on or off. - ・Secure engagement ：
There is no slippage with the wedge-shaped rollers engaging between the inner and outer races. - ・Consistent stopping position ：
The off (disengaged) position is always constant, so there are no cumulative stopping position errors. - ・Exceptional durability ：
Long service life can be achieved as there are multiple rollers taking torque, less parts to wear between the components, and a high-precision finish.
Range of
Shaft Diameters mm
Φ15～Φ30
Torque range N・m
24.5～147
