在消除电动机轴承温度异常升高现象的过程中，摸索出一种电动机在线维护方法，避免了因电动机轴承温度异常造成电动机停运事故。其中在线置换润滑油脂技术的应用，替代了传统的电动机离线更换润滑油脂工作，延长了电动机轴承的使用寿命，降低工人劳动强度，提高了企业的经济效益。

In the process of eliminating the abnormal temperature rise of motor bearing, a motor online maintenance method is proposed, which can avoid the shutdown accident caused by abnormal temperature of motor bearing. In this method, the lubricating grease is replaced online rather than offline. This technology prolongs the service life of motor bearing, reduces the labor intensity of workers, and improves the economic benefits of enterprises.