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ROLLING BEARING FAILURE
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Premature fatigue index
3.3 Corrosion when stationary
| Click on photograph to enlarge | |
 | Figure 3.3 |
| Main Characteristics | Corrosion can occur when the bearing is stationary and is not adequately protected by the lubricant. For example, if a grease-packed bearing is installed in a machine and left standing for some time without running, the grease is not spread over all the surfaces and distributed so that it forms a good seal in the end covers. In this event moisture can condense on the bearing surfaces. Corrosion occurs at the narrowing contact between rolling element and race by a mechanism known as crevice attack (figure 3.3). Again this produces points of weakness that act as initiators for fatigue. |
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| Possible Confusion with Other Types of Damage | |
| Comment |