Reliable Oil Groove Steel Bushing for Mechanical Systems

Our Oil Groove Steel Bushing is a standout among our Precision Bushings and Industrial Bushings, expertly built to excel in rugged heavy-duty machinery like excavators, loaders, and agricultural equipment.   Forged from premium 40Cr or 42CrMo steel, it undergoes precise quenching and tempering to achieve a substrate hardness of HB260–300, ensuring robust, long-lasting structural integrity. Its inner surface is precision-machined with honeycomb-shaped oil storage pockets, which, paired with a resilient, wear-resistant polymer coating, create an efficient self-lubricating system that drastically cuts friction and wear. After finish machining, it receives specialized QPQ salt-bath nitriding treatment, boosting surface hardness to HV0.1>600 and delivering a hardened layer depth of 0.2–0.4mm for superior, long-term durability. With impressive neutral salt spray resistance of 500–1000 hours, it offers long-lasting corrosion protection. This bushing combines large oil storage capacity, lo…