NFS50 One-Way 50x110x40mm Bearing Support Required Backstop ClutchNFS50 One Way Clutch 50mm x 110mm x 40mm One Bearing NFS50 is a one way clutch, One way Sprag Clutch Freewheel and also called as Backstops, NFS50 is used in any applications that requires one direction rotation, such as mining, hydraulic, textile, printing and washing machines, conveyor systems that carry products to a higher level should not be reversed because of gravity during any power shortage. NFS50 One Way Clutch Bearing One Way Clutch