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Grease film thickness measurement in rolling bearing contacts

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Version 2 2023-06-12, 09:32
Version 1 2023-06-09, 21:48
journal contribution
posted on 2023-06-12, 09:32 authored by Xingnan Zhang, Romeo GlovneaRomeo Glovnea
Rolling bearings are the second most used machine components. They work in what it is called elastohydrodynamic lubrication regime. The geometry of rolling element bearings makes the direct measurement of the lubricant film thickness a challenging task. Optical interferometry is widely used in laboratory conditions for studying elastohydrodynamic lubrication however it cannot be used directly in rolling element bearings thus the only suitable methods are electrical techniques. Of these, film thickness measurement based on electrical capacitance of the contacts has been used in the past by a number of authors. One of the limitations of the capacitance method, when used in rolling bearings, is that it cannot distinguish between the contacts of every rolling element and raceway on one hand and on the other between the inner and outer ring contacts. In the present study the authors used an original test rig which can measure the film thickness for only one ball and separately for the inner and outer rings of a radial ball bearing. This paper thus shows for the first-time results of the lubricant film thickness, at the inner and outer raceways, in grease lubricated rolling bearings.

History

Publication status

  • Published

File Version

  • Published version

Journal

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

ISSN

1350-6501

Publisher

SAGE Publications

Volume

0

Page range

1-10

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2020-10-08

First Open Access (FOA) Date

2020-10-08

First Compliant Deposit (FCD) Date

2020-10-07

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