1. If the bearing is in good running condition, it will announce low whine or buzz. If sharp hiss, squeak and other irregular movements are announced, it often indicates that the bearing is in a bad continuous running condition. The sharp squeaking noise may be caused by improper lubrication. Improper bearing clearance can also create a metallic sound.

2. Dents on the track of the bearing outer ring will cause vibration and form a smooth and bright dynamic and static state.

3. If there is an intermittent noise, the rolling element may be damaged. This movement occurs when the damaged surface is rolled out, and if there are pollutants in the bearing, it will often cause hiss. Severe bearing damage can cause irregular and endless noise.

4. If there is noise due to the knock scar formed by the equipment, the noise will vary with the speed of the bearing.

Factors of bearing noise

1. The grease has impurities;

2. Lack of lubrication (the oil level is too low and the oil or grease leaks through the seal due to improper storage);

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

4. Impurities such as sand or carbon particles are mixed in the bearing to play the role of abrasive;

5. Dirt such as water, acid or paint is mixed in the bearing to cause corrosion;

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

7. The sizing block at the bottom of the bearing seat is uneven (causing deformation of the seat hole and even cracks in the bearing seat);

8. There are sundries in the bearing seat hole (residual chips, dust particles, etc.);

9. The sealing ring has a slight pain (contacts with adjacent parts and conflicts);

10. The bearing is subject to additional load (the bearing is subject to axial tension, or there are two fixed end bearings on one shaft)

Article source: Jiangmen filling machine http://www.jm-weishi.com/