FE422Z FE 422 Z Sprag Type One Way Clutch Bearing FE 442 Z2 FE series Freewheel-clutches transmit or support torque moment by friction contact in one direction and permit idling in the opposite direction. Applications Indexing elements: Change from oscillating to intermittent rotary motion. Backstops: Prevent self-reversing due to load condition when the machine is not activated. Overrunning clutches: Maintain driven unit activated during slowdown, or switch to higher speed