AS25 One Way 25x52x15 Bearing Support Required Backstop ClutchAS25 One Way Clutch Bearing One Clutch AS25 = NSS25 AS25 is a one way clutchthat is used for Overrunning, Indexing and Backstopping, this type is non bearing supported, this is exactly the same size as any 6204 ball bearing, you will need one of the 6204 beairngs to support it, One way Bearing Sprag Clutch Freewheel and also called as Backstops. AS25 is used in any application that requires one direction rotation, such as mining, hydraulic, textile,