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Analysis of common failures of rotary joints

by:Yober     2021-04-07


The use of rotary joints is more and more common, but there will be some failures during use. Then, let's briefly analyze the common faults of rotary joints, let's take a look!

1. Low precision (face straightness, radial and axial clearance), large vibration

Disposal measures: check the size and accuracy, adjust the fixed connection with the rotating body;

2. The concentricity between the hollow shaft and the corresponding rotating body is insufficient

Disposal measures: check the size and accuracy, adjust the fixed connection with the rotating body;

3. Foreign matter such as dust and dirt enters the contact surface of the friction pair

Processing method: add filter or cleaning agent, and change the type of rotary joint;

4. Insufficient concentricity between the decorative ring and the deflection axis

Processing method: In addition to installing suspension devices and supporting devices, the acceptance and inspection of product parts must be strengthened;

5. There is no abnormal sound or damage to the lubricating grease ball bearing when the grease is not filled within the specified time and the grease ball bearing is used under high temperature.

Treatment method: regularly add or replace lubricating grease, and replace bearings;

6. The friction surface of the sealing pair is deformed, and the wear of the decorative ring is large

Handling method: Replace spare parts when friction surface is rubbed or abnormal;

7. Deformation, aging, cracking and adhesion of the sealing ring

Solution: Replace with new auxiliary seals;

8, the bellows is damaged

Solution: Analyze motivation and replace with new elastic components.

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