Judge remove a combination of bearing the possibility of further use in combination bearings after cleaning to check, double check the raceway, raceway, with the surface state, cage wear, the combination of bearing clearance, and whether the impact of size the decline in accuracy of damage, abnormal. Non-separation of small ball bearings, the inner flat side, with one hand, rotates the outer ring to confirm whether smoothly.
Bearing and separation of bearings, rolling element, the outer ring raceway surface were examined.
Large bearing higher the importance of hand rotation, pay attention to check the rolling element and raceway surfaces, and maintain the appearance of the frame, ribs, face, bearings need to be cautious examination.
Judgment bearing the possibility of re-use, bearing damage, mechanical properties, the importance of operating conditions, check the cycle, and other related factors to decide. Check if any of the following defects are found, the combination of bearing can not continue to use the new bearings need to be replaced.
: On the surface, this is the role of the combination of bearing rolling contact process, due to the cyclical changes of the work surface plastic deformation and strain hardening the surface of the contact stress caused by external loads, and finally from the development of small cracks the inner surface between the two surface cracks, wedged into the lubricant of the work surface, open the power to crack down on the wall, forcing the crack to move forward;
: From the surface, repeated 

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