Measuring Film Thickness in Starved Grease-Lubricated Ball Bearings: An Improved Electrical Capacitance Method

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

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Presented in this article is a new method to measure the film thickness in a rolling bearing running under starved conditions, such as in grease-lubricated bearings, using the electrical capacitance method. The method was used to study the impact of speed on film thickness. Results show that fully flooded conditions prevail at lower speeds where the film thickness increases with increasing speed. At higher speeds, where grease-lubricated bearings run under starved lubrication conditions, this increase is less pronounced. At even higher speeds, the film thickness becomes almost independent of the speed.
Original languageEnglish
Pages (from-to)869-879
Number of pages11
JournalTribology transactions
Volume65
Issue number5
Early online date16 Aug 2022
DOIs
Publication statusPublished - 3 Sep 2022

Keywords

  • UT-Hybrid-D

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