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Contact fatigue spalling in bearings surface, often accompanied by fatigue crack, first from the contact surface following the largest alternating shear stress generated ­, and then extended to the surface spalling of different shapes, such as point to point pitting or pitting spalling, shallow spalling in the peel into small flakes. Due to the peeling surface gradually expanded, and often deep extended, forming deep spalling. Deep fatigue spalling is source of contact fatigue failure.
The wear failure refers to the failure of the relative sliding friction between the surfaces due to the surface of metal wear and the. Continuous wear will cause EDA damage to bearings parts gradually, and eventually lead to a self-aligning ball bearings loss of dimensional accuracy and other related issues. ­ wear may affect the shape change, increased clearance and surface morphology changes, may affect the lubricant or its pollution to a certain extent and cause lubrication complete loss of function, and thus loss of bearings rotation accuracy and not being properly.
1, the bearings maintenance, repair, and exception handling
For a long time to maintain the performance of self-aligning ball bearings was in good condition as far as possible, maintenance, repair, in order to prevent accidents, ensuring the reliability of operation, increase production, economy. To maintain the best operating conditions of the corresponding mechanical operating standards, regular. Including, monitor the operation condition, supplementary or replacement of the lubricant, periodic disassembly inspection.
As a matter of maintenance in operation, EDA be

aringss spinning sound, vibration, temperature, lubricant condition and so on.
2, bearings damage and Countermeasures
In general, if the proper use of EDA bearings, can use to reach the fatigue life. But there will be accidents injury prematurely, less resistance to the use case. The early damage, relative and fatigue life, the use of limits to be called a failure or accident quality. 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..
The damage state, such as: card injury on bearings roller bearings rings of ribs, may consider as reasons, lack of lubricant, not suitable for bending, for defects, foreign oil discharge structure of invasion, self-aligning ball bearingss, shaft installation error is too large, also for these reasons coincide.
Therefore, only investigated injury, it is difficult to know the real cause of injury. But, if you know the use of machinery, bearings conditions of use, EDA bearingss constructed around, understand the situation before and after the accident, combined with the damage and several reasons why self-aligning ball bearings inspection, can prevent the recurrence of similar accidents.