Cause analysis of bearing noise

2016-03-18 14:35:00 0

1. Grease has impurities;

2. Insufficient lubrication (oil level is too low, improper storage leads to oil or grease leakage through the seal);

3. The clearance of the bearing is too small or too large (problem of the manufacturer);

4. Impurities such as sand or carbon particles are mixed into the bearing to act as an abrasive;

5. Moisture, acid or paint and other contaminants are mixed into the bearing to play a corrosive role;

6. The bearing is flattened by the seat hole (the roundness of the seat hole is not good, or the seat hole is twisted and not straight);

7. The horn on the bottom surface of the bearing seat is uneven (causing deformation of the seat hole or even cracks in the bearing seat);

8. There are debris in the bearing housing hole (remains of cuttings, dust particles, etc.);

9. Eccentricity of the sealing ring (touching adjacent parts and causing friction);

10. The bearing is subjected to additional load (the bearing is axially tightened, or there are two fixed-end bearings on a shaft);

11. The fit of the bearing and the shaft is too loose (the diameter of the shaft is too small or the adapter sleeve is not tightened);

12. The clearance of the bearing is too small, and it is too tight when rotating (the adapter sleeve is too tight);

13. The bearing is noisy (caused by the end face of the roller or the steel ball slipping);

14. The thermal elongation of the shaft is too large (the bearing is subjected to static and additional axial load);

15. Shaft shoulder is too large (touching the bearing seal and friction);

16. The shoulder of the seat hole is too large (the seal made by the bearing is distorted);

17. The gap of the labyrinth seal ring is too small (friction with the shaft);

18. The teeth of the lock washer are bent (touch the bearing and friction occurs);

19. The position of the oil rejection ring is not suitable (touching the flange cover and friction);

20. There are pressure pits on the steel ball or roller (caused by hitting the bearing with a hammer during installation);

21. The bearing is noisy (with external vibration source interference);

22. The bearing is discolored and deformed by heat (caused by heating the gun to remove the bearing);

23. The shaft is too thick and the actual fit is too tight (causing the bearing temperature to be too high or noise);

24. The diameter of the seat hole is too small (causing the bearing temperature to be too high);

25. The diameter of the bearing seat hole is too large, the actual fit is too loose (the bearing temperature is too high-the outer ring slips);

26. The bearing housing hole becomes larger (the bearing housing hole of non-ferrous metal is enlarged or becomes larger due to thermal expansion);

27. The cage is broken.

28. Bearing raceway rust.

29. Steel ball, raceway wear (unqualified grinding or scratched product).

30. The ferrule raceway is unqualified (problem of the manufacturer)


Please fill in your message, we will reply as soon as possible!

  • company:
  • tel:
  • addr: