Grease film evolution in rolling elastohydrodynamic lubrication contacts

Originalpublikation

Li, X.; Guo, F.; Poll, G.; Fei, Y.; Yang, P.: Grease film evolution in rolling elastohydrodynamic lubrication contacts. In: Friction 9 (2021), Nr. 1, S. 179-190. DOI: https://doi.org/10.1007/s40544-020-0381-4

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Zusammenfassung:
Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified. © 2020, The Author(s).
Lizenzbestimmungen: CC BY 4.0 Unported - https://creativecommons.org/licenses/by/4.0/
Publikationstyp: Article
Publikationsstatus: publishedVersion
Erstveröffentlichung: 2021
Schlagwörter (englisch): Roller bearings, Elastohydrodynamic lubrications (EHL), Evolution patterns, Film formations, Grease lubrication, Lubricated contacts, Primary mechanism, Residual layers, Rolling Element Bearing, Elastohydrodynamic lubrication, elastohydrodynamic lubrication (EHL), grease lubrication, replenishment, rolling contacts, starvation
Fachliche Zuordnung (DDC): 530 | Physik, 540 | Chemie

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