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With the appearance of high-speed trains in recent years, the working condition of high-speed traction motor is strictly inspected. During the operation of high-speed train, the rolling bearing is the key components of a safe practice, it is also one of the most vulnerable parts, its problems directly related to transportation safety, so it is necessary to do durability test and fault diagnosis to high-speed traction motor bearing regularly.

In recent years the emergence of high-speed trains, high-speed traction motor bearing on the work of the state of the stringent requirements put forward. In the high-speed train running in the safe operation of rolling bearings is a key component, is most likely to damage one of the components, it is directly related to the failure of the safety of transport, so for high-speed traction motor bearings for durability testing and fault diagnosis is essential