Abstract
This paper brings out the theoretical model to determine the developed magnetic flux density on the track surfaces of inner race, outer race and rolling elements of a rolling-element hearing operated under the influence of electric current. The flux density, analytically determined, is compared with that of the flux density developed on the track surface of races and rolling elements of the bearings tested on the bearing test-up under the influence of electric current. Also, the residual magnetic flux density on the damaged bearings of motors and alternators has been measured and the theoretical model is used to determine the amount of current flow through the damaged bearings. The current flow through the bearings, thus established, has been compared with that of the current evaluated by the measurement of shaft voltage and bearing resistance.
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