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内燃机车的走行部是决定机车安全运行的最重要的组成部分。轴箱轴承是联系轮对与轴箱的关键部件，它不仅传递机车的牵引力、制动力和机车与钢轨之间的垂向作用力，而且还作为轮对的回转中心。它除承受着很大的和复杂的作用力外，还要长时间地高速运转。如果轴箱内润滑。散热不
The running gear of a diesel locomotive is the most important part that determines the safe operation of a locomotive. Axlebox bearings are the key components that connect the wheelset to the axlebox, which not only transmits the locomotive’s traction, braking forces and vertical forces between the locomotive and the rail, but also serves as the center of rotation for the wheelsets. In addition to its great and complex force, it needs to operate at high speed for a long time. If the axle box lubrication. Cooling is not