NDLI: Systematic practical approach to the study of bearing damage in a large oil-ring-lubricated induction machine

Content Provider	IEEE Xplore Digital Library
Author	Ong, R. Dymond, J.H. Findlay, R.D. Szabados, B.
Copyright Year	1972
Abstract	The demand for self-contained hydrodynamic bearing assemblies has increased as a result of their lower cost and increased reliability compared to bearings with an external lubrication system. The oil-ring lubrication system is the most popular lubricant circulating system used in self-contained bearings. Motors with such a lubrication system tend to experience bearing damage when the shaft current is sufficiently large. An industry-university research partnership program was instituted to study the shaft current phenomenon in an eight-pole 2611-kW oil-ring-lubricated sleeve bearing induction machine. The study reviewed all the possible causes of the bearing damage. A series of experimental tests was carried out to determine the cause(s) of the shaft current. These tests included oil analysis, bearing damage analysis, and no-load running tests. The tests were conducted using a novel method of shaft current measurement. In addition to the test results, this paper presents a simplified pictorial representation of the significance of joints due to lamination segmentation on the occurrence of shaft current. The paper also includes shaft voltage prediction rules.
Sponsorship	IEEE Industry Applications Society
Starting Page	1715
Ending Page	1724
Page Count	10
File Size	280033
File Format	PDF
ISSN	00939994
Volume Number	36
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction machines Shafts Testing Lubrication Hydrodynamics Assembly systems Costs Lubricants Petroleum Current measurement
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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