No.1001E 2006First Edition Effect of Lubricant Film Thickness on Bearing Life under Contaminated Lubrication Part 2: Relationship between Film Thickness and Dent Formation |
| Category | TECHNICAL PAPER |
|---|---|
| Author | T. SADA T. MIKAMI Material Engineering R&D Department, Research & Development Center |
| Abstract | To date, lubricant film condition represented by film parameter has been disregarded for the most part in studies of debris-induced failure of rolling bearings. However, as discussed in Part 1, film condition is a principal factor in not only bearing life but also failure mode under severe contaminated lubrication. In the life tests described in Part 1, many dents were formed on the raceways and bearing life was reduced with increasing lubricant film thickness. These results indicate that the degree of denting affects bearing life, and the film condition is closely related to dent formation. In this paper, the relationship between film condition and dent formation is investigated, and the mechanism of difference in degree of denting with change in film thickness is discussed. |
| Keyword | rolling bearing, fatigue life, contamination, lubricant fi lm thickness, debris dent |
| Reference | T. SADA, T. MIKAMI : Effect of Lubricant Film Thickness on Bearing Life under Contaminated Lubrication Part 1: Life Tests for Ball Bearings in Contaminated Oil, Koyo Engineering Journal, No.167E (2005) 18. |
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