The universal joint transmission device is generally composed of a universal joint for truck and a drive shaft, and intermediate support is sometimes required.
On the front-engine rear-wheel drive vehicle, the universal joint transmission is installed between the transmission output shaft and the input shaft of the drive axle final reducer; while the front-engine front-wheel-drive vehicle omits the transmission shaft, and the universal joint is installed Between the front axle half shaft and the wheels, which are responsible for both driving and steering.
In the same way, this universal joint is needed as a "joint" between the transmission and transfer case of an off-road vehicle, and between the front-drive steerable drive axle and the half shaft. The structure and function of the universal joint are a bit like the joints on the limbs of the human body. It allows the angle between the connected parts to change. But it is different from the movement form of the limb joints, it only allows the angle to change within a certain range.
To meet the angle changes caused by the up and down jumps generated by power transmission, steering and car running, universal joints are also commonly used between the drive axle of the front-drive car and the axle shaft and the wheel axle. Sometimes we also need special custom universal joints . xsjbearing.com