Vibrations and film thickness in grease-lubricated deep groove ball bearings

Pramod Shetty*, Robert Jan Meijer, Jude A. Osara, Rihard Pasaribu, Piet M. Lugt

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
83 Downloads (Pure)

Abstract

Understanding the relevance and significance of the various replenishment mechanisms in grease-lubricated bearings is very important in choosing the appropriate lubrication strategy. This study shows that the lubricant film thickness in the ball-ring contacts of a deep groove ball bearing may increase by 10%–25% due to vibrations. The possible mechanisms behind this film thickness increase are discussed. Of the proposed contact replenishment mechanisms, the micro-lateral motion of the contact edge across the tracks caused by in-operation vibrations appears crucial. Results show that in the starved contacts, vibration plays a vital role in determining the film thickness.
Original languageEnglish
Article number109325
Number of pages10
JournalTribology international
Volume193
Early online date22 Jan 2024
DOIs
Publication statusPublished - May 2024

Keywords

  • UT-Hybrid-D
  • Grease
  • Film thickness
  • Elastohydrodynamic lubrication
  • Vibration
  • Rolling bearings

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