CKA Series One Way Bearing is sprag type freewheel.Overrunning speeds between 800-2500rmin,31.5-4500N.m torque. WKA(CKA) Series One Way Bearing is a basic sprag type freewheel. Bearings are required to supported axial and radial loads, locked dependable and running mobility, overrunning speeds between 800-2500rmin,31.5-4500N.m torque, and often used for package machine, printing machine, food ...