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Capacitance measurement in a bearing
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-4857-9475
2018 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

 A bearing arrangement includes a bearing having an inner race and an outer race and a plurality of rolling elements arranged between the inner and outer race such that the first race is rotatable relative the second race; bearing lubricant arranged within the bearing to lubricate the rolling elements. The bearing arrangement provides a first electrically conductive portion and a second electrically conductive portion, the first and second electrically conductive portion being electrically insulated and arranged such that at least a portion of the bearing lubricant is located between the first and second electrically conductive portion; and a capacitance meter having a first electrode connected to the first electrically conductive portion and a second electrode connected to the second electrically conductive portion, configured to measure a capacitance between the first ring and the second ring to determine a water content in the lubricant based on the measured capacitance.

Place, publisher, year, edition, pages
2018.
National Category
Reliability and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-75999OAI: oai:DiVA.org:ltu-75999DiVA, id: diva2:1351324
Patent
US 9995344 (2018-06-12)Available from: 2019-09-14 Created: 2019-09-14 Last updated: 2020-01-07Bibliographically approved

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fulltext(1018 kB)2 downloads
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