Influence of Parasitic Electric Currents on an Exemplary Mineral-Oil-Based Lubricant and the Raceway Surfaces of Thrust Bearings
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Published:2023-07-25
Issue:8
Volume:11
Page:313
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ISSN:2075-4442
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Container-title:Lubricants
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language:en
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Short-container-title:Lubricants
Author:
Graf Simon1ORCID, Koch Oliver1ORCID, Sauer Bernd1
Affiliation:
1. Chair of Machine Elements, Gears and Tribology (MEGT) RPTU Kaiserslautern-Landau, Gottlieb Daimler Straße 42, 67663 Kaiserslautern, Germany
Abstract
Within this paper, electro-mechanical long-term tests on a thrust bearing were presented. The effects of an additional electrical load on the bearing raceways and the used lubricant were investigated. Chemical investigations and viscosity measurements were presented, which show the changes in the lubricant. These investigations were compared with the electrical loads and the occurring raceway damage. In addition, a comparison was made with mechanical reference tests. This procedure makes it possible to classify the changes that occur due to the electrical load and to distinguish the effects from each other. The background to these investigations is the increased occurrence of parasitic currents in electric motors, which can lead to damage to machine elements. The phenomena that occur here are new challenges in the development of drive trains.
Funder
Model for determining the thermal stress of lubricants as a result of mechanical and electrical loads in rolling contact Determination of ball bearing impedances under steady-state operating conditions by means of a further developed rolling contact model at full film lubrication Deutsche Forschungsgemeinschaft (DFG) e.V.
Subject
Surfaces, Coatings and Films,Mechanical Engineering
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6 articles.
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