Studies on the Vibrations of Ball Bearing under Radial Load : 3rd Report, Flexural Natural Vibration of Outer Ring

An investigation was carried out to elucidate the vibration on the outer ring of ball bearings under a radial load. In this report, the flexural natural vibrations of the outer ring were studied. The ball bearings were operated at a constant speed under a radial load. The radial or the axial vibrations of some points on the outer ring were picked up by two accelerometers. From analysis of the radial and the axial vibrations, the mode shapes of the flexural natural vibration of the outer ring were obtained. From the experimental results, analysis and considerations, the presences of flexural natural vibrations of the outer ring was confirmed, and frequency expressions for the flexural natural vibrations of the outer ring were derived. Moreover, marked accuracy of the frequency expressions was demonstrated.