本文介绍了渔子溪40MW、500r/min发电机推力轴承设计参数,运行中出现的问题及原因分析,改进措施及改进后的测试数据。提出了镜板泵外循环喷油管喷油量的估算方法。为高速推力轴承,特别是对镜板泵轴承的设计和改进提供了依据。 This paper introduces the design parameters of thrust bearing of 40MW and 500r / min generators in Yuzixi, the problems occurred in the operation, the reasons analysis, the improvement measures and the improved test data. The method to estimate the fuel injection quantity of the external circulation fuel injection pipe was proposed. For high-speed thrust bearings, especially the mirror plate pump bearings provide the basis for the design and improvement.