The high temperature rise of grease lubricated angular contact ball bearing under high speed operation will affect the working accuracy of the bearing, and even lead to the loss of accuracy. In this paper, a friction heat generation model for high-speed grease lubricated angular contact ball bearing was established. Based on the quasi-static analysis model, the thermal expansion of the bearing components is brought into the quasi-static equilibrium equation, and the modified quasi-static analysis model of high-speed grease lubricated ACBB is obtained. Under grease lubrication conditions, a local bearing heat-generation model was employed to assess power losses in different contact zones, in which bearing contact parameters, external loads, and rotation speeds conditions were fully considered. Moreover, the temperature distribution of grease lubricated high-speed bearing was analyzed by the multi node thermal network method. Through the analysis model of bearing dynamic and thermal characteristics considering the influence of thermal expansion established, bearing contact parameters have significant differences. The calculated values of outer ring temperature of grease lubricated angular contact ball bearing is in good agreement with the experimental values. The model can predict the temperature values of grease lubricated angular contact ball bearing under axial load at high speed.

脂润滑角接触球轴承在高速运转下的高温上升会影响轴承的工作精度，甚至导致精度损失。本文建立了高速脂润滑角接触球轴承摩擦生热模型。在准静态分析模型的基础上，将轴承零部件的热膨胀引入准静态平衡方程，得到修正后的高速脂润滑ACBB准静态分析模型。在脂润滑条件下，采用局部轴承发热模型评估不同接触区的功率损耗，充分考虑轴承接触参数、外载荷和转速条件。而且，采用多节点热网络方法分析了脂润滑高速轴承的温度分布。通过建立考虑热膨胀影响的轴承动热特性分析模型，轴承接触参数存在显着差异。脂润滑角接触球轴承外圈温度计算值与实验值吻合较好。该模型可以预测脂润滑角接触球轴承在高速轴向载荷下的温度值。脂润滑角接触球轴承外圈温度计算值与实验值吻合较好。该模型可以预测脂润滑角接触球轴承在高速轴向载荷下的温度值。脂润滑角接触球轴承外圈温度计算值与实验值吻合较好。该模型可以预测脂润滑角接触球轴承在高速轴向载荷下的温度值。