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Original Articles

Bearing Condition Monitoring for Preventive Maintenance in a Production Environment

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Pages 936-942 | Published online: 25 Mar 2008
 

Abstract

Premature failure of machine, tool spindle bearings is a major problem in production that can result in an enormous loss in production and spindle rehabilitation cost. The bearing internal contact force tends to change when the spindle is subjected to abnormal operating conditions. In this paper, the complicated variations in the condition of a grinding spindle in a three-shift production line were studied with a focus on examining the drift of bearing operating conditions over a long period of time. The results show that a stable operating condition was achieved and this condition gradually shifts due to factors such as the start-slop of the spindle between shifts, wear, contamination, and temperature. It is shown in this paper that the bearing condition can be explicitly expressed. on-line in a chart, denoted as a stability margin (SM) chart, where the nominal operating condition can be specified. As a result, predictive maintenance can be achieved try examining the bearing condition in comparison with the nominal operating condition specified in the chart.

Presented at the 51st Annual Meeting in Cincinnati, Ohio May 19–23, 1996

Notes

Presented at the 51st Annual Meeting in Cincinnati, Ohio May 19–23, 1996

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