Rolling bearing failure index

4.0 Fitting damage

Click on photograph to enlarge
	Figure 4a A spherical roller bearing damaged by the application of excessive impacts during assembly
	Figure 4b A cylindrical roller bearing fractured by careless fitting
	Figure 4c
Main Characteristics	Excessive impacts when fitting a bearing on to a shaft during assembly can lead to indentations on the tracks, figure 3.2a (similar to false brinnelling, figure 3.4b, but in this case there will be a raised lip surrounding the indentation) or to fracture of the race shoulders (figures 4a, b).
Cause
Note	Excessive interference fit can even result in fracture of the race (figure 4c).
Possible Confusion with Other Types of Damage
Comment

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