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Running temperature and mechanical stability of grease as maintenance parameters of railway bearings
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-7474-2723
2010 (English)In: International Journal of Automation and Computing, ISSN 1476-8186, E-ISSN 1751-8520, Vol. 7, no 2, p. 160-166Article in journal (Refereed) Published
Abstract [en]

Spherical roller bearings in railway car wheels are critical components whose failure may have catastrophic consequences. The present study aims to analyse the mechanical stability of greases and temperature of bearings as indicators for condition-based bearing maintenance. The performed case study includes nine fully-formulated commercial greases examined in the wheel bearings of five ore cars operated in northern Scandinavia. The studied ore cars travelled a distance of about 300 000 km during a period of three years. Small samples of the greases were taken on eight occasions to test their mechanical stability. In addition, the temperatures of the bearings were continuously recorded. After the test period, the wear, electrical damage, and corrosion of the bearings were examined. One of the findings is that the shear stress of the grease at a certain shear velocity (the certain yieldstress (CEY) value) is a good maintenance indicator and is highly dependent on the grease type. The bearing's wear, electrical damage and corrosion also depend on the grease type. However, no oxidation of the greases was identified. The paper also outlines a systematic methodology to determine an overall maintenance indicator for railway roller bearings which is based on the field measurements

Place, publisher, year, edition, pages
2010. Vol. 7, no 2, p. 160-166
National Category
Reliability and Maintenance Other Civil Engineering
Research subject
Quality Technology and Management; Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-5776DOI: 10.1007/s11633-010-0160-1Scopus ID: 2-s2.0-77952374013Local ID: 3f594c50-1fb6-11df-be83-000ea68e967bOAI: oai:DiVA.org:ltu-5776DiVA, id: diva2:978651
Note
Validerad; 2010; 20100222 (jalu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Lundberg, JanParida, AdityaSöderholm, Peter

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