The transmission shaft is an important part of the automobile transmission system to transmit power. It is the shaft that can transmit driving force in the transmission shaft of the universal transmission device. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle to generate driving force for the automobile. Because it is a rotating body with high speed and few support plates, its rotor dynamic balance is particularly important.

Usually, before the transmission shaft is in the original factory, the transmission shaft balancer must be used to measure the rotor dynamic balance, and the calibration is carried out in the balancer. For the vehicle with front and rear drive of external module, the rotation of transmission is transmitted to the shaft of main reducer. It can be several sections, and the sections can be connected by cross shaft.

The transmission shaft of special-purpose vehicles is mainly used in oil tank vehicles, refueling vehicles, sprinkler vehicles, sewage suction vehicles, manure suction vehicles, fire engines, high-pressure cleaning vehicles, road obstacle removal vehicles, aerial work vehicles, garbage trucks and other vehicles.