Install rotary joints on hydraulic equipment

When installing rotary joints on hydraulic equipment, attention should be paid to maintaining good coaxiality between the joint and the equipment, otherwise radial oscillation may occur when the rotary joint rotates; The cyclic radial force will cause the rotating joint of the composite material to slide, and the sealed end face will wear; Radial oscillation can also disrupt the equilibrium point of the static pressure oil film in the mechanical seal rotary joint, and cause radial contact between the moving and stationary rings, resulting in wear of the metal ring. The fixing of the rotary joint housing is to prevent synchronous rotation with the axis, but there should not be too many constraints. Radial or axial forces act on the joint housing, which are transmitted to the bearings and internal rotating seals of the rotary joint through the housing, forcing the bearings or seals to wear or be damaged.