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The sealing function of grease: contamination migration in grease lubricated radial lip seals
SKF Engineering & Research Center, Nieuwegein.ORCID iD: 0000-0001-9356-7599
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
2010 (English)In: Proceedings of the STLE/ASME International Joint Tribology Conference 2010: presented at STLE/ASME International Joint Tribology Conference, October 17-20, 2010, San Francisco, California, USA, New York: American Society of Mechanical Engineers , 2010, p. 81-83Conference paper, Published paper (Refereed)
Abstract [en]

Lubricating grease is commonly used for lubricating `sealed and greased for life' bearings. This grease lubricates the rolling contacts. It also provides an additional sealing function to protect the bearing against ingress of contamination. The sealing function of lubricating grease in the vicinity of the seal lip contact has been studied experimentally. The effects of the lubricant rheology on the migration of ingress particles has been examined. In grease, experimental results reveal that contaminant particles consistently migrate towards the sealing contact where the shear rate reaches its highest value. In contrast, for a Newtonian base oil and a non shear thinning elastic fluid, it has been observed that the migration effect takes place in the opposite direction, and brings particles away from the sealing contact. It is concluded that the sealing function of grease in the vicinity of the sealing contact is due to the fluid rheology and more specifically to the shear thinning behaviour of the lubricant

Place, publisher, year, edition, pages
New York: American Society of Mechanical Engineers , 2010. p. 81-83
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-29989DOI: 10.1115/IJTC2010-41032Scopus ID: 2-s2.0-80054759855Local ID: 3a33d440-037f-11e0-803d-000ea68e967bISBN: 978-0-7918-4419-9 (print)OAI: oai:DiVA.org:ltu-29989DiVA, id: diva2:1003216
Conference
STLE/ASME International Joint Tribology Conference : 18/10/2010 - 20/10/2010
Note
Godkänd; 2010; 20101209 (piebaa)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Baart, PieterLugt, PietPrakash, Braham

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