Original ZF main shaft bearing shim is integrally stamped and formed from high-precision alloy sheet. It features a flat surface with uniform thickness, high hardness, and resistance to bending and compressive deformation.
The surface is treated with anti-rust and hardening process, delivering excellent wear and corrosion resistance, and will not rust or fail easily under long-term high temperature and oil pollution environments.
It is used to fine-tune the mounting clearance of the main shaft bearing, balance axial force, reduce operating clearance and axial play, and make transmission operation smoother and quieter.
With original precise dimensions and perfect fitting performance, it is easy to install and suitable for heavy-duty long-distance driving and frequent gear shifting conditions. It effectively suppresses gearbox abnormal noise and delays the wear of bearings and shaft parts.






