The rotary joint structure (as shown in the figure below) consists of a shell and a mandrel. According to the number of pipes, the spindle is provided with equal annular grooves, and hydraulic oil is supplied to the motor from the inlet of the housing through the grooves and from the vertical holes of the spindle. In short, the housing continues to rotate, the groove of the spindle and the oil port on the housing remain unobstructed, allowing the hydraulic oil to flow freely.
Of course, during the use of the rotary joint , leakage due to the damage of the sealing ring is inevitable, so it must be replaced in time with a new sealing ring; before replacing the sealing ring, we'd better check the real cause of the damage. If the wear is caused by particles sticking to the surface, clean and replace the damaged seal in time; before installing a new seal, check it to remove burrs, particles and other debris that may scratch the sealing surface of the seal, and Grease the sliding surface and the sealing ring before installation.