A beverage filling assembly and a cam apparatus for a beverage filling machine is disclosed. A cam housing defines a first aperture along a central axis and a second aperture transverse to the central axis with a filling valve aligned with the second aperture. The cam member is rotatably disposed in the first aperture and includes a shaft portion and an eccentric portion aligning with the filling valve. A lever is connected to the cam member for concurrent movement with the cam member. A bearing sleeve defines an orifice for receiving the shaft portion. The bearing sleeve is formed of a self-lubricating material for preventing frictional engagement between the cam housing and the shaft portion. The bearing sleeve includes a flange adjacent the cam housing for preventing movement of the bearing sleeve axially along the central axis during operation. The bearing sleeve is removable from the shaft portion during servicing.