What is the purpose of a half shaft?

[Gilbert]

The function of a half shaft is to transmit power. The half shaft transfers the torque from the differential to the wheels, thereby propelling the vehicle forward. Modern vehicles typically use half shaft support systems, with the most common types being the full-floating half shaft and the semi-floating half shaft. Among these, the full-floating type is the most widely used. The advantages of the full-floating half shaft include: 1. Easy installation and removal during use—simply unscrew the bolts on the half shaft flange to extract the shaft; 2. Convenient maintenance and servicing. The semi-floating half shaft operates on a different principle than the full-floating type. The semi-floating half shaft not only transmits torque but also bears all the reaction forces and bending moments generated by the vehicle. Its support structure is relatively simple, and its production cost is lower, making it suitable for various passenger cars with smaller reaction bending moments. However, the installation process for this type of half shaft is more complicated, and its removal is also more troublesome. If the half shaft breaks, it can lead to very serious hazards.