L68A1 Mast Section Causes and solutions to abnormal noise of slewing bearing

29-11-2019

1. Fault cause: poor lubrication of large gear ring.

Solution: refuel smoothly.

2. Fault cause: the gap between the big gear ring and the small gear is improper.

Solution: adjust the gap.

3. Fault cause: the rotating body or isolation block is damaged.

Solution: replace the damaged parts.

4. Fault cause: pitting and peeling of raceway surface.

Solution: rest the raceway.

5. Cause of failure: the pre tightening force of high-strength bolt is inconsistent, with great difference.

Solution: adjust the preload.

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