As the support frame of automobile transmission shaft, the transmission shaft bracket is composed of support frame, bearing and rubber support.

The transmission shaft bracket assembly is located at the lower end of the automobile chassis and plays the role of transmitting power. The transmission shaft assembly is equipped with universal joint bearing, intermediate hanger bearing and spline expansion joint to ensure the normal operation of the transmission shaft assembly.

1. Low carbon steel has good plasticity, low strength and hardness, good weldability and cold stamping processability, and can be used to make various standard parts, shaft sleeves, containers, etc;

2. High carbon steel has poor plasticity, high hardness, poor fatigue strength, poor machinability, and is not flexible enough to be used as shaft parts and easy to break. This kind of steel is suitable for making static pressure bearing and wear-resistant parts, such as heavy rails and rolls. After proper heat treatment, spring, wire rope and other parts requiring high hardness and wear resistance can also be made;

3. The main function of automobile transmission shaft is to support the revolving body and transmit power. Generally, the working conditions will bear alternating torque and tension and compression load, and the journal and key parts will bear greater friction and wear. The failure forms are mainly fracture and local excessive wear, and fracture includes fatigue fracture and overload fracture. Therefore, when selecting materials, they should have sufficient strength, stiffness and certain toughness, good wear resistance, high fatigue strength and good machinability. That is, the spindle is required to have good comprehensive mechanical properties.

4. The medium carbon steel can obtain good comprehensive mechanical properties after proper heat treatment, reaching the core toughness and surface wear-resistant parts.