Nửa trục ô tô còn được gọi làtrục truyền động, which connects the differential with the drive wheels. The trục truyền động is the shaft that transmits torque between the gearbox reducer and the drive wheels. There is a universal joint (U/JOINT) at the inner and outer ends of the shaft, which is connected to the reducer gear and the inner ring of the hub bearing through the spline on the universal joint.
Cáctrục truyền động is a solid shaft that transmits large torque between the differential and the drive axle. Its inner end is generally connected with the side gear of the differential through a spline, and the outer end is connected to the drive through a flange or spline. The wheel shells of the wheels are connected.
Cácstructure of the trục truyền độnglà khác nhau do kết cấu của trục truyền động. Bán trục trong trục truyền động không ngắt kết nối là một trục toàn phần cứng.