Stable-support Precision Axle Shaft Sleeve

As the core bearing and positioning component of the electric drive axle, the axle shaft sleeve integrates multiple functions such as half-shaft support and sealing protection. With its highly integrated design, it simplifies the drive axle structure, reduces the number of parts, and improves system reliability. Its precision control is strict, the inner hole tolerance grade reaches IT7, and the surface roughness Ra≤0.8μm, ensuring precise matching with the half-shaft and bearing, and avoiding vibration and noise caused by excessive clearance. The support stability is outstanding, using the integral forging process to form, the uniformity error of the pipe wall thickness is ≤0.5mm, the radial stiffness is increased by 20%, and it can stably support the radial load when the half-shaft rotates at high speed. The impact resistance is achieved through material upgrading, using 27SiMn alloy structural steel, after quenching and tempering treatment, the hardness reaches HB240-280, and the…