Wear failure refers to the relative sliding between the surface of the working surface due to friction wear and tear resulting metal continuously fail. Continuous wear will cause spherical roller bearing parts gradually damage and eventually lead to the loss of dimensional precision bearings and other related issues. Wear may affect the change in shape, with the gap increasing and working surface morphology changes that may affect the lubricant, or it reaches a certain level of pollution caused by lubrication complete loss of function, thereby bearing the loss of rotational accuracy and even can not operate normally. Kinds of bearing wear failure is a common failure modes, can generally be divided according to wear the most common form of abrasive wear and adhesive wear.
1, the impact on bearing life
Cleanliness of bearing spherical roller bearing life for a considerable impact, bearing had this for a special test, the result is the difference of even several times more. The higher the cleanliness of the bearing, the longer life expectancy and other human trials showed that: cleanliness of lubricants on ball bearing life greatly. Therefore, to improve the cleanliness of the lubricating oil can extend the life of the bearing, in addition, if the control oil dirt particles containing less than 10um, the bearing life is increased by times.
2, the impact of noise and vibration
  (1) Vibration of the center bearing test results show that: cleanliness seriously affect bearing vibration level, especially the vibration of high frequency band is more significant. High cleanliness bearing vibration velocity is low, especially in the high frequency band.
  (2) the impact of noise on the spherical roller bearing grease in the dust test done on the effects of noise, dust proof, the more the greater the noise.
3, the lubrication performance of
Cleanliness bearing down, not only affect the oil film formation, can also cause deterioration of the grease and accelerate the aging, thus affecting the performance lubricating grease.
Bearing fracture failure was mainly due to two factors defects and overload. When the applied load exceeds the material strength limit and cause parts breakage called overload fracture. The main reason is the host overload sudden failure or improper installation. Sliding bearing parts microcracks, shrinkage, bubbles, large foreign debris, overheating organizations and local burns and other defects in shock overload or severe vibrations will cause the fracture defect, called defective fracture. It should be noted, spherical roller bearings in the manufacturing process, the raw materials into the plant reinspection, forging and heat treatment quality control, process control instruments are properly analyzed by the existence of the defect, the control must be strengthened in the future. But in general, bearing fracture failure usually occurs mostly overload failure.



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