A gear shaft is a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. It is generally a metal rod-shaped circle, with different diameters for each segment. The rotating parts of the machine are mounted on the shaft.
Gear is the most widely used mechanical transmission component, featuring compact structure, large transmission power, high efficiency, long lifetime, good reliability and accurate transmission ratio. The precision forging technology of gears has been taken seriously due to its remarkable advantages; it has been increasingly developed by researchers in various countries.