Media type: Text; E-Article Title: Grease film evolution in rolling elastohydrodynamic lubrication contacts Contributor: Li, Xinming [Author]; Guo, Feng [Author]; Poll, Gerhard [Author]; Fei, Yang [Author]; Yang, Ping [Author] Published: Berlin; Heidelberg : Springer, 2021 Published in: Friction 9 (2021), Nr. 1 ; Friction Issue: published Version Language: English DOI: https://doi.org/10.15488/12607; https://doi.org/10.1007/s40544-020-0381-4 ISSN: 2223-7690 Keywords: Primary mechanism ; rolling contacts ; elastohydrodynamic lubrication (EHL) ; Film formations ; Evolution patterns ; Residual layers ; Lubricated contacts ; starvation ; Roller bearings ; Rolling Element Bearing ; Elastohydrodynamic lubrication ; Elastohydrodynamic lubrications (EHL) ; Grease lubrication ; replenishment Origination: Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Description: 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). Access State: Open Access Rights information: Attribution (CC BY)