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Wear characteristics with mixed lubrication conditions in a full scale journal bearing
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-5988-9647
ABB Stal AB, Finspång.
1999 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 232, no 2, p. 192-198Article in journal (Refereed) Published
Abstract [en]

Increased awareness of environmental problems has stressed the importance of switching from traditional lubricants to more environmentally friendly alternatives. Different investigations with standard test methods indicate that such a switch is possible without loss of lubricating power. The question arises if the statement above is true for industrial lubricating conditions, without laboratory cleanliness. This paper presents a study of friction and wear in a two grooved journal bearing at different shaft speeds, oil temperatures and contamination levels. A number of tests have been conducted combined with a theoretical analysis of film thickness and lubricating regime. The aim was to investigate whether an environmentally adapted rape seed-synthetic ester oil could replace a traditional mineral oil in a full scale application. The results show that the rape seed-synthetic ester oil gives significantly lower values of wear regardless of the operating conditions and there is also a tendency of lower values of frictional torque compared with the mineral oil. Mainly operating in the mixed lubrication regime, no signs of impending bearing failure have been registered, even though a large amount of silica particles added to the oil gave higher wear values than with uncontaminated oil.

Place, publisher, year, edition, pages
1999. Vol. 232, no 2, p. 192-198
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-13341DOI: 10.1016/S0043-1648(99)00145-3Scopus ID: 2-s2.0-0033207119Local ID: c9041670-1db4-11dd-8384-000ea68e967bOAI: oai:DiVA.org:ltu-13341DiVA, id: diva2:986294
Note
Godkänd; 1999; 20080509 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Kassfeldt, Elisabet

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