Abstract
An investigation was carried out to elucidate the natural vibrations of ball bearings. In this report, in-plane natural vibrations on the outer ring of a loaded ball bearing are studied. A point on the outer ring of the ball bearing under a thrust load was excited sinusoidally by a shaker. The radial responses of 35 points on the outer ring were measured by an accelerometer. Analyzing the radial responses, the modes of in-plane natural vibrations on the outer ring were obtained. From the experimental results, theoretical analysis and considerations, the existences of two types of in-plane natural vibrations on the outer ring of a loaded ball bearing were clarified, and frequency expressions for the in-plane natural vibrations on the outer ring were derived. Moreover, the remarkable accuracy of the frequency expressions was demonstrated.
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