Precision mian shaft typically refers to the primary rotating axis in a mechanical device. It plays a crucial role in supporting and spinning other components such as gears, fans, turbines, and more. Main shafts are constructed from high-strength materials capable of withstanding torque and loads. They find widespread application across various equipment and machinery including vehicle engines, industrial machines, aerospace engines, and beyond. The design and manufacturing quality of main shafts significantly impact the performance and stability of mechanical systems