Recent Cases of Diagnosis Method of Rolling Bearing Failure

Abstract

A roller bearing gets failure when it is used long term under heavy load. Flaking on the outer or inner surface of the bearing is a typical failure. Abnormal vibration caused by the failure is measured usually using an acceleration sensor in order to detect the failure. It is relatively easy to detect the abnormal vibration and to diagnose the bearing failure if rotation speed is high, but it is difficult if rotation speed is low. The paper introduces recent cases of diagnosis techniques and products especially for low speed rotation rolling bearings. Also a simple and practical diagnosis method which the author has developed using a jerk sensor is explained.