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Performance of synthetic oils in the hydrodynamic regime: I. Experimental
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
2003 (English)In: Journal of Synthetic Lubrication, ISSN 0265-6582, Vol. 20, no 1, p. 15-24Article in journal (Refereed) Published
Abstract [en]

An investigation of the performance of environmentally adapted synthetic oils in the hydrodynamic lubrication regime has been carried out. Four oils have been tested: polyalphaolefin and ester based ISO VG46 oils as well as mineral ISO VG68 and VG46 oils. Tests were conducted in a facility containing two identical tilting-pad thrust bearings typical of the design in general use. The differences between the mineral and synthetic oils in terms of maximum operating temperature, minimum oil film thickness, and bearing power loss have been examined. Substitution of the mineral ISO VG68 oil with an ISO VG46 oil slightly reduces the bearing operating temperature. This is due to a decrease in the basic viscosity. It is concluded that the ester base ISO VG46 oil can be used as an environmentally adapted replacement for the mineral ISO VG68 oil without sacrificing bearing safety. Such a change also offers noticeable energy savings. If the ester based oil is used instead of a mineral oil of the same viscosity grade, bearing reliability is improved by the increased oil film thickness.

Place, publisher, year, edition, pages
2003. Vol. 20, no 1, p. 15-24
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-6329Local ID: 48d5a670-c25d-11db-9ea3-000ea68e967bOAI: oai:DiVA.org:ltu-6329DiVA, id: diva2:979206
Note
Godkänd; 2003; 20061109 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved

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Glavatskikh, SergeiLarsson, Roland

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