CSK40P One-Way Bearing Sprag Freewheel Clutch Bearing - One inner Ring Key-wayCSK40P One Way Clutch Bearing with Keyway 40mm x 80mm x 27mm Sealed Sprag Freewheel The CSK40P is a sealed one way clutch bearing designed to transmit torque in one direction while allowing free rotation in the other. It features a keyway on the inner ring for secure shaft engagement ideal for backstopping and indexing in heavy duty industrial applications like conveyors, motors, and presses. 1 one way clutch bearing per pack Size: 40mm ID x 80mm OD x