This heavy-duty hydraulic winch assembly is a core traction auxiliary device exclusively researched and manufactured by Shandong Hengji Group Co., Ltd., a national specialized, sophisticated, distinctive and innovative enterprise, perfectly matched for Shantui SD32 / SD320 320HP crawler bulldozers, widely applied in mining, forest logging, mud road vehicle rescue and heavy construction hauling scenarios.
As one of our flagship complete assembly products, we adopt self-produced 42CrMo alloy steel precision gears inside the winch box, with gear grinding accuracy up to Class 7, reaching top domestic technical standard. The full manufacturing workflow includes integral cast winch housing CNC machining, multi-stage planetary gear forging & precision grinding, hydraulic brake cylinder assembly, manual pull-rope clutch mechanism installation, pressure leakage testing and anti-rust yellow paint finishing. All internal gears pass carburizing quenching heat treatment with tooth surface hardness HRC 58-62, delivering outstanding wear resistance and strong load-bearing traction capacity under long-term heavy working conditions.
This winch assembly is mounted on the rear of the bulldozer, connected to the vehicle’s main hydraulic system. The external pull rope controls the clutch separation and engagement, enabling free winding and releasing of steel wire rope without frequent engine shutdown. Built-in hydraulic automatic locking brake prevents rope reverse slipping during heavy load traction, greatly improving operation safety. Compared with ordinary aftermarket winches, our internal high-precision gear set reduces transmission vibration and noise by 35%, and extends overall service life by more than 50% under harsh mining and forest environments, lowering long-term equipment maintenance costs for end users.
All casting, forging, gear processing and hydraulic assembly procedures are finished in our self-owned full industrial chain workshops without outsourcing, ensuring unified structural strength and stable mass delivery cycles for OEM bulk supporting orders. This winch perfectly fits SD32 and SD320 series bulldozers. Every finished assembly undergoes full hydraulic pressure and traction load testing with official factory inspection reports, and all export products obtain CE certification with a 12-month quality warranty. Besides standard SD320 models, our engineering team accepts customized winch assemblies with larger traction tonnage according to customers’ special construction demands.
We maintain long-term stable OEM supply cooperation with domestic top construction machinery brands including Shantui, Sany and Liugong. Our bulldozer winch assemblies are exported in large batches to Saudi Arabia, South Africa, Kenya, Algeria, Russia and Southeast Asian markets. Global machinery distributors highly recognize our winch products for reliable traction performance, competitive factory FOB prices and flexible minimum order quantity. Our professional technical team provides full installation guidance and timely after-sales technical support for all international partners.
