What should I do if the rotary joint leaks right after it is used?

Reason 1: The end surface of the oil-free bearing and the contact surface of the conflicting pair are not tightly attached or broken (caused during installation or transfer).
Solution: Remove the rotary joint and replace the oil-free bearing or conflict compensation ring.


Reason 2: The conflicting sealing surface is not running in.
Solution: After the rotary joint has run-in and used for a period of time to reach the equilibrium roughness, the leakage will be stopped.


Reason 3: The clearance between the bottom hole of the shell or the bottom cover and the hollow shaft is not equal (the sealing ring is inclined).
Solution: Adjust the structure of the hanging, supporting or guiding rod to ensure the concentricity of the hollow shaft, the shell and the rotating body.





Reason 4: The hollow shaft is not concentric with the shaft of the rotating joint.
Solution: Check the size and accuracy, check the tightness of the metal hose, and adjust the fixed connection with the rotary joint.


Reason 5: The granular solid or foreign matter with higher hardness enters between the sealing surfaces of the conflicting pair during installation or installation.
Solution: Grind the side of the conflict or replace the equipment.


Reason 6: The specific pressure of the spring of the rotary joint is small.
Solution: change the plan, replace the spring.


Reason 7: There is no uniformly thickened gasket between the hollow shaft flange and the roller connecting boss and pit.
Solution: Leakage occurred in the connecting part of the equipped equipment. Remove and join the washer of uniform thickness.


Reason 8: The accuracy of the assembly machine is low (end face verticality, radial and axial clearance is large), and the vibration is large.
Solution: Find out the reason, repair and match equipment.