Internal Freewheels ZZ are sprag freewheels with bearing support and ball bearing properties. The freewheels are supplied grease-filled for normal operating conditions. The freewheel is built into the customer ­housing. This makes compact, space-saving ­fitting solutions possible. Nominal torques up to 325 Nm. The torque is transmitted on the inner ring andor on the outer ring by press fit or keyway connection. Bores up to 40 mm.