Outer joint BJ104
The Outer joint is connected to the wheel hub by a spline, which mainly implements the power transmitted to the wheel end by the gearbox through the constant speed drive shaft assembly . The outer ball cage mainly includes a bell-shaped shell, a cage, a star sleeve, and a steel ball. The spherical surface and the raceway of the outer ball cage are curved. Therefore, the outer ball cage cannot perform axial movement and can only provide the steering function for the car.