This heavy-duty track roller frame is an essential cast steel undercarriage supporting component exclusively manufactured by Shandong Hengji Group Co., Ltd., specially designed and matched for Shantui SD32 and SD320 320HP crawler bulldozers, widely applied in mining, quarry and heavy earthmoving construction scenarios.
We adopt high-toughness alloy cast steel as raw blank material, with integrated one-time casting molding to avoid assembly gaps and loose structural risks. The complete production process includes precision casting, rough grinding, stress relief full annealing, CNC boring of mounting holes, shot blasting rust removal and anti-corrosion bright yellow polyurethane paint spraying. Every casting part passes magnetic particle non-destructive flaw detection to eliminate internal shrinkage cavities, sand holes and hidden cracks, greatly improving bending resistance and anti-fracture performance under long-term heavy load and bumpy road operation.
This roller frame is installed under the bulldozer track frame, serving as fixed carrier for track rollers and carrier rollers. Its symmetrical U-shaped reinforced rib structure evenly disperses the whole machine’s weight to each supporting wheel, effectively reducing local stress concentration, preventing bracket deformation and fracture during climbing, pushing heavy soil and rock crushing operations. Compared with ordinary thin-wall aftermarket brackets, its service life is extended by over 40% under harsh mining environments, lowering frequent replacement costs for construction equipment operators and maintenance merchants.
All casting, heat treatment and machining procedures are completed in our self-owned integrated production workshops without outsourcing, which ensures stable consistent casting quality and reliable mass delivery cycles for OEM bulk supporting orders. This track roller frame perfectly fits SD32 and SD320 bulldozer walking systems. Each finished bracket undergoes full dimensional inspection and static load testing with 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 cast steel brackets according to customers’ drawings, samples or thickened reinforcement demands for other bulldozer specifications.
We maintain long-term stable OEM supply cooperation with domestic top construction machinery brands including Shantui, Sany and Liugong. Our bulldozer undercarriage castings are exported in large batches to Saudi Arabia, South Africa, Kenya, Algeria, Russia and Southeast Asian markets. Global machinery distributors highly recognize our roller frame products for solid casting durability, competitive FOB factory prices and flexible minimum order quantity. Our professional technical team provides installation guidance and timely technical after-sales support for all international partners.
