S1107-1-6 Experimental Study on Shock Response of Fluid Film Bearing for Small Size Spindle Motor

Abstract

This paper describes the experimental study on shock response of fluid bearing for HDD spindle motor. Comprehending of vibration characteristics is important to designing the fluid bearings for HDD spindle motor because HDD is used for many mobile devices such as mobile PCs, mobile audios and car navigation systems recently. Moreover, when the fluid bearing is vibrated by disturbance, the rotating shaft has a possibility to come in contact with the bearing. Hence, wear and seizure occur between the shaft and the bearing. Therefore, it is necessary to know the vibration characteristics of bearings for HDD spindle motors. In this study, we made the experimental apparatus, and measured shock response of the bearing.