To determine whether the bearing is damaged, these few tricks must be used

During the regular inspection of the bearing, if any part is damaged, the bearing cannot be used, that is, it needs to be replaced with a new bearing.

1. Any of the inner and outer rings, rolling elements, and cages has cracks and fragments.

2. Any of the inner and outer rings and rolling elements has peeling.

3. The raceway surface, ribs, and rolling elements have obvious carding.

4. The cage is severely worn or the rivets are loose.

5. The raceway surface and rolling elements are rusted and scratched.

6. There are obvious indentations and marks on the rolling surface and rolling elements.

7. There is creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.

8. Overheating and discoloration.

9. The seal ring and dust cover of the grease-sealed bearing are seriously damaged.

During the operation of the bearing, how to identify whether the bearing is damaged? There are mainly three identification methods:

1. Identification by sound

Identification by sound requires rich experience. Sufficient training is required to be able to distinguish between bearing sounds and non-bearing sounds. For this reason, this work should be done by a dedicated person as much as possible. The sound of the bearing can be clearly heard by sticking a listening device or listening stick to the shell.

2. Identification by working temperature

This method is a comparative identification method and is limited to occasions where the operating state does not change much. For this reason, continuous temperature recording is required. When a fault occurs, not only will the temperature rise, but irregular changes will also occur.

3. Identification by the state of the lubricant

The lubricant is sampled and analyzed, and the degree of contamination is judged by whether it is mixed with foreign matter or metal powder. This method is particularly effective for bearings that cannot be observed closely or large bearings.