Effect of cleanliness on bearing performance

The influence of cleanliness on bearing performance.
1. Influence on bearing life
The cleanliness of bearings has a great influence on the service life of bearings. Special tests have been carried out on bearings, and the results show that the difference is several times or even tens of times. The higher the cleanliness of the bearing, the longer the life of the bearing. Therefore, improving the cleanliness of the lubricating oil can prolong the service life of the bearing. In addition, if the dirt particles in the lubricating oil are controlled below 10um, the service life of the bearing will increase several times.
2. Influence on vibration and noise
(1) Influence on Vibration
The test results of the bearing test center show that the cleanliness seriously affects the vibration level of the bearing, especially in the high frequency band. The bearing with high cleanliness has low vibration velocity, especially in high frequency band.
(2) Impact on noise
The influence of the dust in the bearing grease on the noise has been tested. It is proved that the more the dust, the greater the noise.
3. The influence on lubrication performance
The decline of bearing cleanliness not only affects the formation of lubricating oil film, but also causes the deterioration and accelerated aging of grease, thus affecting the lubricating performance of grease.