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SR Series (Indirect type )

Model No.  SR~

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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~

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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

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