1, the effects on bearing life
　　Cleanliness of bearing considerable influence on bearing life, conducted a special test of directed to NSK bearings company, with the result that their differences over several or even dozens of times times. Cleanliness of bearing higher, longer life and other people's experiments show that different degrees of cleaning effect of lubricating oil on ball bearing life considerably. Therefore, improving the cleanliness of the lubricant can prolong the life of NSK bearings, in addition, lubricants containing dirt particles control in following 10um, bearing life into several fold increase.
　　2, vibration and noise impacts
　　(1) on vibration influence of NSK bearing Test Center test results show that cleanliness seriously affect bearing vibration level, especially high-frequency vibrations more visible. Cleanliness of high speed bearing vibration values low, especially in the high frequency band.
　　(2) on noise impact of Japan in NSK bearing grease bearing company in collaboration with oil companies do test the impact of dust on noise proof dust as much noise as possible.
　　3, effects on lubrication performance of NSK bearings drop in cleanliness, not only affect the lubricant film formation, also cause modification of lubricating greases and accelerate their aging, thus affecting the grease lubrication performance.


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