@article{b19575d7b83543b69ec1960f35e98b49,
title = "Effect of start-stop motion on contact replenishment in a grease lubricated deep groove ball bearing",
abstract = "The impact of start-stops on the thickness of lubricating films in the Elasto-Hydrodynamic Lubrication (EHL) contacts in grease lubricated rolling bearings is different from that in oil lubricated bearings. This paper shows that the film thickness drops to zero quickly due to the absence of hydrodynamic effects during a stop. It quickly increases to an unexpected large value when the bearing is stopped for a long time and started up again, although this large value only lasts for a very short time. This is due to additional track replenishment during the stop leading to an initially thicker film than expected. This increase is found to be determined by the rotational speed of the bearing, stop-time, base oil viscosity and width of the contacts. The start-stop effect is similar for unidirectional and oscillating speeds, provided that the stopping time is long enough.",
keywords = "Ball bearing, Grease lubrication, Replenishment, Start-stop, 22/1 OA procedure",
author = "Hui Cen and Lugt, {Piet M.}",
note = "Funding Information: This study was performed at Universiteit Twente, the Netherlands. The authors would like to thank the technical support from R.J. Meijer of Universiteit Twente and SKF Research and Technology Development for permission to publish this paper. The authors also would like to thank the financial support by Natural Science Foundation of Henan Province, China (Grant No. 212300410387 ) and National Natural Science Foundation of China (Grant No. 51905463 ). Funding Information: This study was performed at Universiteit Twente, the Netherlands. The authors would like to thank the technical support from R.J. Meijer of Universiteit Twente and SKF Research and Technology Development for permission to publish this paper. The authors also would like to thank the financial support by Natural Science Foundation of Henan Province, China (Grant No. 212300410387) and National Natural Science Foundation of China (Grant No. 51905463). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",
year = "2021",
month = may,
doi = "10.1016/j.triboint.2021.106882",
language = "English",
volume = "157",
journal = "Tribology international",
issn = "0301-679X",
publisher = "Elsevier",
}