Problem & answerG-14
Shaft Misalignment
Likely causes
- Loose coupling
- Bearing wear
- Improper installation
- Vibration
- Mechanical impact
How to fix it
- 1Stop the machine.
- 2Inspect shaft alignment.
- 3Adjust the coupling; replace damaged bearings.
- 4Tighten mounting bolts.
- 5Verify alignment with a dial indicator or laser alignment tool.
- 6Restart and monitor vibration.
It is fixed when
Machine runs smoothly with no abnormal vibration or coupling wear.
Stop it coming back
- Check shaft alignment at every major service.
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