The reducer is actually an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid shell. It is often used as a reduction transmission device between the original moving part and the working machine. It plays a role in matching the speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery. However, in the process of our use, the reducer bearing noise may occur in the reducer. The following editor from Xianji will introduce the cause of the reducer bearing noise.

1. The grease in the reducer contains impurities.

2. The lubrication of the reducer is insufficient. For example: the oil level is too low, improper storage, etc. cause oil or grease to leak through the seal.

3. Impurities such as sand or carbon particles are mixed into the bearing to act as an abrasive; the bearing is mixed with dirt such as water, acid or paint to have a corrosive effect.

4. The thermal elongation of the shaft is too large, and the bearing is subjected to a statically indeterminate axial additional load.

5. The bearing of the reducer is subjected to additional load and the bearing is axially tight. It may also be that there are two fixed-end bearings on one shaft.

6. The fit between the bearing and the shaft is too loose. The shaft diameter is too small or the adapter sleeve is not tightened.

7. The shim iron on the bottom surface of the bearing seat is not flat, resulting in deformation of the seat hole and even cracks in the bearing seat.

8. There is debris in the bearing seat hole.

9. The position of the oil slinger is inappropriate.

10. There are pressure pits on the steel ball or roller.

11. The bearing has noise and external vibration source interference.

12. The bearing becomes discolored and deformed when heated.

13. The bearing is noisy.

14. The bearing seat hole becomes larger, and the bearing seat hole of non-ferrous metal is enlarged or enlarged due to thermal expansion.

15. The shoulder of the seat hole is too large, and the seal of the bearing is distorted.

16. The gap of the labyrinth seal is too small to cause friction with the shaft.

17. The teeth of the lock washer bend and touch the bearing and cause friction.

18. The shaft is too thick and the actual fit is too tight (causing too high bearing temperature or noise.

19. The diameter of the seat hole is too small, causing the bearing temperature to be too high.

20. The diameter of the bearing seat hole is too large and the actual fit is too loose.