Rolling bearing failure index

1.0 Track markings

Click on photograph to enlarge
	Figure 1a Tracking patterns on ball bearing races arising from a variety of operating situations
	Figure 1b A photograph of the tracking pattern on a misaligned ball bearing with associated ball pocket wiping on the cage.
Main Characteristics	Even if fatigue failure has not occurred, rolling bearings usually show track marks on the races in the regions where the rolling elements have been in contact. The shape and position of these track marks can give useful guidance on the conditions under which the bearing has been operating (figure 1a).
Cause
Note
Possible Confusion with Other Types of Damage
Comment

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