The wear characteristics on bearing outer ring of planetary gear in conflux planet gear train of power-shift steering transmission

Hongwei Wang*, Biao Ma, Hailing Zhang, Man Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aimed at the bearing outer ring of planetary gear in planetary transmission, the failure mechanism of wear between the planet gear bearing and thrust washer was investigated. The reasons for its failure and ways to reduce wear were also studied. A typical wear failure of bearing outer ring was analyzed in terms of the morphology observation with scanning electron microscopy (SEM), the metallographic analysis on radial cross section and microhardness testing. Through the comprehensive analysis of metallographic structure and microhardness, the temperature distribution of bearing outer ring was obtained. The results showed that the adhesive wear was the main wear type for thrust washer while the fatigue wear was a small part; a great axial force existed in the working mechanism, which lead to big contact stress and speed up wear; the high temperature on the friction surface could reach about 700°C and cause the tempering process in the material; Inadequate cooling effect due to lack of lubrication oil may be another main reason for the high temperature caused by wear.

Original languageEnglish
Title of host publicationICRMS'2011 - Safety First, Reliability Primary
Subtitle of host publicationProceedings of 2011 9th International Conference on Reliability, Maintainability and Safety
Pages1252-1256
Number of pages5
DOIs
Publication statusPublished - 2011
Event2011 9th International Conference on Reliability, Maintainability and Safety: Safety First, Reliability Primary, ICRMS'2011 - Guiyang, China
Duration: 12 Jun 201115 Jun 2011

Publication series

NameICRMS'2011 - Safety First, Reliability Primary: Proceedings of 2011 9th International Conference on Reliability, Maintainability and Safety

Conference

Conference2011 9th International Conference on Reliability, Maintainability and Safety: Safety First, Reliability Primary, ICRMS'2011
Country/TerritoryChina
CityGuiyang
Period12/06/1115/06/11

Keywords

  • axial force
  • bearing outer ring
  • high temperature
  • lubrication
  • wear failure

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