The driver shaft (CVJ, CV joint, constant velocity joint) is a shaft that connects the differential to the drive wheel. The half shaft is the shaft that transmits torque between the gearbox reducer and the drive wheel. There is a universal joint (U/JOINT) at the inner and outer ends, which are connected to the reducer gear and the inner ring of the hub bearing through the splines on the universal joint. .

The half shaft is the shaft that transmits torque between the gearbox reducer and the drive wheel (previously it was mostly solid, but because the hollow shaft rotation imbalance control is easier, many hollow cars are used on the car), and there are one 10,000 inside and outside. The joints (U/JOINT) are connected to the reducer gear and the inner ring of the hub bearing through the splines on the universal joint.
The half shaft is used to transfer power between the differential and the drive wheels. The half shaft of the ordinary non-disconnected drive axle can be divided into three types: full floating type, 3/4 floating type and semi-floating type according to the outer end support form.