@article{7f4bf438b3da4b9290a9b972da466754,
title = "Replenishment of the EHL contacts in a grease lubricated ball bearing",
abstract = "The film thickness in grease lubricated bearings is usually calculated by assuming fully flooded conditions, using the base oil properties. This paper shows that, for sealed-for-life bearings, starvation already occurs at relatively low speeds, where the film thickness could be described by the product of speed, viscosity and Hertzian semi-contact width. It is shown that replenishment is not significant on the tracks in-between the balls but that it is a local phenomenon. The relation between film thickness and the product of speed, viscosity and contact size is different from what is found in single contacts. The film thickness decreases as a function of speed and viscosity, but the effect is only small leading to an almost constant film thickness with increasing product of viscosity and speed.",
keywords = "Bearing, Film thickness, Local phenomenon, Replenishment, n/a OA procedure",
author = "Hui Cen and Lugt, {Piet M.}",
note = "Funding Information: This work was executed at the University of Twente (UT), the Netherlands. The authors would like to thank R.J. Meijer from the UT for technical support and SKF Research and Technology Development for permission to publish this paper. The authors also would like to thank the financial support by National Natural Science Foundation of China (Grant No. 51905463). Funding Information: This work was executed at the University of Twente (UT), the Netherlands. The authors would like to thank R.J. Meijer from the UT for technical support and SKF Research and Technology Development for permission to publish this paper. The authors also would like to thank the financial support by National Natural Science Foundation of China (Grant No. 51905463 ). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",
year = "2020",
month = jun,
doi = "10.1016/j.triboint.2019.106064",
language = "English",
volume = "146",
journal = "Tribology international",
issn = "0301-679X",
publisher = "Elsevier",
}