Influence of bearing cleanliness on bearing

First, the influence on bearing life


The cleanliness of the bearing has a great influence on the life of the needle roller bearing. The bearing has been tested for this reason, and the result is that the difference is several times or even more than tens of times. The higher the cleanliness of the bearing is, the longer the life of the bearing is. The results show that the lubricating oil with different cleanliness has a great influence on the life of the ball bearing. Therefore, improving the cleanliness of lubricating oil can prolong the life of bearing. In addition, if the dirt particles of lubricating oil are controlled below 10um, the life of bearing increases several times.


Second, the influence on vibration and noise


The test results of the bearing test center show that the cleanliness seriously affects the vibration level of the bearing, especially the vibration in the high frequency band.


The vibration velocity of bearings with high cleanliness is low, especially in high frequency band. The influence of dust in needle roller bearing grease on noise is tested, and it is proved that the more dust, the greater the noise.


Third, the effect on lubrication performance


The decrease of bearing cleanliness will not only affect the formation of lubricating oil film, but also cause the deterioration of grease and accelerate its aging, thus affecting the decline of lubrication performance of grease.