Outer C. V. Joint is an important role in  the transmission system of car. It is used to transmit the power from engine to the two front wheels, then make the car to drive with high speed. There are many types of outer C.V.Joint. The most popular is C.V. joint and triangle C.V. joint.  It mainly consists of sliding cover, three-way axle ,draft shaft, inner race ,cage and bell. The main components need to be formed by fine forging since the C.V. joint bears heavy driven torque and load, also be requested the high transmission accuracy, a great deal of quantity demand based on safety part.