Date: 2013-08-22

Damage reason analysis of TIMKEN angular contact ball bearings

In general, if the proper use of the TIMKEN bearing, you can use to reach fatigue life. But there will be accidents injury prematurely, less resistance to the use case. This early injury, and fatigue life of a relative, is known as the quality limits of failures or accidents. More due to installation, use, lubrication on the do not pay attention to, the intrusion of foreign bodies from external, for the study of thermal effect of shaft housing, insufficient etc..
Bearing work, in the clearance of many factors, mainly the temperature change, angular contact ball bearings of centrifugal force and coordination. In the work process, due to the effect of centrifugal force, and temperature, so that the clearance change, sometimes with three factors are not isolated, but interrelated. Therefore, in order to correctly reflect the actual work of three to the work of the bearing clearance, so as to reasonably determine the bearing clearance, in order to improve the TIMKEN bearing working efficiency and running accuracy.
The damage state of bearing such as: card injury roller bearing rings, flanges, may consider as reasons, lack of lubricant, not suitable for defect, foreign body, oil discharge structure of the intrusion, bearing, shaft deflection error is too large, also for these reasons coincide.
Bearing stiffness adjust bearing different degrees of shaft and hole must have enough stiffness, and bearing hole on the same axis must be kept strictly different shaft. In addition, the diameter is as far as possible, to avoid causing rolling body wedged and overload. By locating device locating, install the TIMKEN bearing should check that the circlip is good, can be shoulder is smooth, the surface has no impurity dirt through the test run and find it, in the bearing cover fastening bolts in the process, constantly rotating bearings in the running to find should be positive angular contact ball, according to the prescribed tightening torque fastening bolt. In the process of screw shaft bearing cover, rotating shaft continuously, the bearing should be made to find it. The drive shaft center bearing should also be so adjusted.
Therefore, only the investigation of TIMKEN bearing damage, it is difficult to know the real causes of injury. But, if you know the angular contact ball bearing using machinery, conditions of use, bearings constructed around, understand the situation before and after the accident, combined with the bearing damage and several reasons for visits, you can prevent the recurrence of similar accidents.  

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