one way clutch WAU15 is a type of sprag cage clutch,no bearing supported,used for printing machine. One way clutch ASNU series is used for printing machine. Type ASNU series is a sprag type freewheel non bearing supported. Bearings are required to support axial and radial loads. Lubrication and sealing must also be provided by theinstallation. Nominal outside diameter is the same as a series 63 ...