| Ramp & Roller Design These rugged, reliable clutches consist of a cylindrical outer race and an inner race incorporating the ramps on which the rollers ride. The rollers are individually spring loaded to provide constant force between the rollers and both races. This force ensures instantaneous lock-ups when switching from the overrunning mode to the driving mode. This design is also quite versatile, as the clutch can be operated in all three modes: overrunning, indexing and back-stopping. The outer race has greater overrunning speed capability than the inner race, making the unit ideal for use as an indexing clutch, with the outer race acting as the reciprocating member. |