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Lubricants 2015, 3(2), 365-380; doi:10.3390/lubricants3020365

Relationship between Supplied Oil Flow Rates and Oil Film Thicknesses under Starved Elastohydrodynamic Lubrication

NSK Ltd., 1-5-50 Kugenumashinmei, Fujisawa-shi, Kanagawa 251-8501, Japan
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Author to whom correspondence should be addressed.
Academic Editors: Romeo P. Glovnea and Michel Fillon
Received: 12 December 2014 / Revised: 31 March 2015 / Accepted: 8 April 2015 / Published: 28 April 2015
(This article belongs to the Special Issue Friction and Lubrication of Bearings)

Abstract

Many studies have already considered starved lubrication. However, there have been no reports on the oil film thicknesses under steady starved EHL (elastohydrodynamic lubrication), where the ultra-low volume of oil supplied per unit time is uniform. The present study examined the relationship between the supplied oil flow rate and oil film thickness under steady starved lubrication. A ball-on-disk testing machine was used in experiments to measure the oil film thickness by means of optical interferometry. A microsyringe pump was used to accurately control the supplied oil flow rate. The supplied oil flow rate was kept constant, and the minimum oil film thickness was measured for 1 h after the start of the tests to determine the relationship between the supplied oil flow rate and oil film thickness. View Full-Text
Keywords: starvation; EHL; oil film thickness; oil quantity; point contacts starvation; EHL; oil film thickness; oil quantity; point contacts
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Maruyama, T.; Saitoh, T. Relationship between Supplied Oil Flow Rates and Oil Film Thicknesses under Starved Elastohydrodynamic Lubrication. Lubricants 2015, 3, 365-380.

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