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

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

31-03-2020

1. fault cause: poor lubrication of big gear ring.

Solution: refuel smoothly.

L68A1 Mast Section

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.

L68A1 Mast

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