AZ7129320105 Sinotruk A7 Howo Input Shaft

Description

AZ7129320105 gearbox input shaft is a core power input component specially for Sinotruk A7 and Howo heavy truck gearbox. It connects with the engine clutch assembly, receiving torque output from the engine and transmitting power into the gearbox internal transmission mechanism. The shaft blank adopts high-quality alloy steel forging, and goes through precision turning, grinding and carburizing quenching heat treatment. It achieves high surface hardness, good core toughness and strong resistance to torsion and fatigue, which can bear large torque and frequent impact loads during heavy-load transportation, mountain climbing and frequent gear shifting. The integrated gear teeth on the shaft are processed with high precision to ensure stable meshing with mating gears and reduce transmission vibration and abnormal noise. Every input shaft undergoes strict dimensional inspection, tooth profile detection and non-destructive testing before delivery to prevent torsion deformation, tooth breakage and premature wear. It can be directly replaced during gearbox overhaul when the original shaft is damaged. We maintain sufficient inventory and stable bulk supply for repair workshops, fleet operators, auto spare parts dealers and global cross-border export customers.