電動機のウェーブワッシャ不良による深溝玉軸受の早期損傷メカニズムと振動診断
Early damage mechanism and vibration diagnosis for ball bearing of electric motor caused by unsuitable function of wave washer.
著者:
佐々木 一人 Ichito SASAKI 瀬川 佑太 Yuta SEGAWA
発刊日:
公開日:
BearingMotorsVibration diagnosisWavewasher
概要
Maintenance methods are broadly grouped to the preventive maintenance(Time Based Maintenance) and the post incident maintenance(Condition-Based-Maintenance,Breakdown-Maintenance). It is unusually confirmed after maintenance that an unsuitable disassembling of rotating equipment causes incident such as increasing of vibration or abnormal sound. At the case of maintenance of electrical motors that are used for mid or small sized pumps or blowers, and wave-washer is reused, a few times of these phenomena were experienced during short duration after maintenance. By means of vibration analysis and disassembling of these motors, we confirmed that these wave-washers degraded and situation of the inside of bearings was unsuitable. Furthermore, we confirmed the similar features of vibration wave between them. This report describes these experience about characteristic of vibration, mechanism of these phenomena, and diagnosis as post incident maintenance.
