The effects of lubricating oil additives on the rolling contact fatigue strength of a rolling bearing for an automatic transmission

Toshihiko Ichihashi, Hiroshi Fujita, Susumu Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effects of lubricating oil additives on the pitting life of a radial needle bearing and a thrust needle bearing used for a transmission in passenger cars were investigated. Lubricating oil additives formed a tribofilm with tens of nanometers on the rolling surface of the needle bearing, and the difference in the pitting life of the radial needle bearing was about twice and that of the thrust needle bearing was about 30 times according to a lubricating oil additive. The pitting life was related to the hardness of the tribofilm; i.e., the pitting life grew longer as the tribofilm became softer.

Original languageEnglish
Title of host publicationProceedings - International Brazilian Conference on Tribology
Pages571-583
Number of pages13
Publication statusPublished - 2010
Event1st International Brazilian Conference on Tribology, TriboBR-2010 and 2nd International Tribology Symposium of IFToMM, ITS - IFToMM 2010 - Copacabana, Rio de Janeiro
Duration: 2010 Nov 242010 Nov 26

Other

Other1st International Brazilian Conference on Tribology, TriboBR-2010 and 2nd International Tribology Symposium of IFToMM, ITS - IFToMM 2010
CityCopacabana, Rio de Janeiro
Period10/11/2410/11/26

Keywords

  • Bearing
  • Lubricating oil
  • Pitting
  • Tribofilm

ASJC Scopus subject areas

  • Process Chemistry and Technology

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  • Cite this

    Ichihashi, T., Fujita, H., & Matsumoto, S. (2010). The effects of lubricating oil additives on the rolling contact fatigue strength of a rolling bearing for an automatic transmission. In Proceedings - International Brazilian Conference on Tribology (pp. 571-583)