An over-temperature of bearing is found during the operation on the 2 vertically-installed motors of low-temperature liquid-oxygen pumps in ASU and by lifting the motors at the site, maintenance and repair are carried out as well as improvements made in assembly ,the causes for the bearing over-temperature are analyzed and measures for improvements suggested.%空分装置使用的2台科莱斯达立式安装的低温液氧泵电机,在运行过程中出现轴承温度过高的问题,通过对电机现场起吊、拆卸、装配方面检修的总结及方法改进,分析轴承温度过高的原因,提出改进的措施。
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