五十年代中期东德国营铁路就已开始对其拥有的车辆改装成技术上和经济上都有利的滚柱轴承。除了少量购置的特种车辆以外,其余车辆装有配合尺寸约为WI/WIP120×240的圆柱滚柱轴承。目前,除了一些比较老类型的车辆外,滚柱轴承的换装工作已经结束。一些专业人员对于安装滚柱轴承有个错误的概念,即这样做可消除轴箱发热。以后应进行试验,以判断东德国营铁路车辆滚柱轴承的运用可靠性并对减少损坏和轴承发热方面作出指示。一、滚柱轴承的轴箱发热在实际运用中是否出现轴箱发热是判断一个轴承系统可靠性的标准。对滚柱轴承连 In the mid-1950s the East German state-owned railroad began to retrofit its vehicles with technically and economically profitable roller bearings. Except for a small number of special vehicles purchased, the remaining vehicles are fitted with cylindrical roller bearings with a mating size of approximately WI / WIP120 × 240. At present, the roller bearing replacement is over except for some older types of vehicles. Some professionals have a wrong concept for installing roller bearings, which is to eliminate the heat generated by the axlebox. Tests should be conducted later to determine the reliability of the use of Roller Bearings for state-owned East Rail vehicles and to provide guidance on reducing damage and bearing heating. First, the roller bearing heat box in the actual use of shaft box fever is to determine the reliability of a bearing system standards. To roller bearings