Reasons and solutions for leakage of rotary joints

Reason 1: The contact surface between the oil-free bearing end face and the collision pair is not tight or cracked (caused by installation or transfer).
Solution: Remove the rotary joint and replace the oil-free bearing or conflict compensation ring.
Reason 2: The collision sealing surface has not been worn in.
Solution: After the rotating joint has run in and reached equilibrium roughness for a period of time, it will stop leaking.

Reason 3: The gap between the bottom hole of the shell or bottom cover and the hollow shaft is not equal (the sealing ring is tilted).
Solution: Adjust the structure of the suspension, support, or guide rod to ensure the concentricity of the hollow shaft, housing, and supporting rotor.
Reason 4: Poor concentricity between the hollow shaft and the shaft body with a rotating joint.
Solution: Check the size and accuracy, check the sealing of the metal hose, and adjust the fixed connection with the rotary joint.
Reason 5: During installation or installation, high hardness granular solids or foreign objects enter the collision sealing surface.
Solution: Grind the conflicting surface or replace the equipment.
Reason six: The spring of the rotary joint is less than the pressure.
Solution: Change the plan and replace the spring.
Reason 7: The thickness of the gasket between the hollow shaft flange and the roller connection boss and pit is uneven.
Solution: There is a leakage at the connection point of the device. Remove the gasket with uniform thickness.
Reason 8: The assembly machine has low precision (large perpendicularity of the end face, large radial and axial clearances) and high vibration.
Solution: Identify the cause and repair the equipment.