This complete heavy-duty track frame assembly is an integrated undercarriage load-bearing core component exclusively developed and mass-produced by Shandong Hengji Group Co., Ltd., a national specialized, sophisticated, distinctive and innovative manufacturer, fully compatible with Shantui SD32 and SD320 320HP crawler bulldozers for open-pit mining, rock quarry and heavy earthmoving construction.
This integrated assembly combines cast steel track frame main beam, front idler wheel, multiple heavy-duty track rollers, hinged mounting lugs and rear drive wheel connecting base into one finished unit. We adopt high-tensile thick alloy steel plates and integral cast steel support seats as raw materials. The full manufacturing workflow includes CNC blanking, robot full penetration welding, overall stress relief annealing, magnetic particle ultrasonic non-destructive testing for all welding seams, precision boring of mounting holes, shot blasting rust removal and anti-corrosion bright yellow polyurethane paint finishing. All key load-bearing welding joints undergo double flaw detection to eliminate hidden cracks, while integral annealing effectively releases welding internal stress, greatly improving anti-deformation and anti-fracture performance under long-term bumpy heavy-load operation.
As the fundamental carrier of the bulldozer walking system, the track frame bears the full weight of the whole machine and the huge impact load generated during soil pushing, rock crushing and climbing operations. The pre-installed idler and track rollers ensure stable track operation, effectively preventing track derailment and reducing abrasion loss of chain, gear and drive shaft spare parts. Compared with ordinary split aftermarket track frames, our integrated reinforced assembly extends the overall service life of the undercarriage system by more than 45% under harsh mining environments, lowering long-term equipment maintenance and component replacement costs for mine operators and machinery leasing companies.
All casting, welding, heat treatment and precision machining procedures are completed in our self-owned full industrial chain workshops without outsourcing, ensuring unified structural rigidity and stable mass delivery cycles for OEM bulk supporting orders. Every finished track frame assembly passes full static load and dimensional inspection with official factory test reports, and all export versions obtain CE certification with a 12-month quality warranty. Besides standard SD320 track frame models, our engineering team accepts customized thickened reinforced track frames according to customers’ special ultra-heavy mining load requirements.
We maintain long-term stable OEM supply cooperation with domestic top construction machinery brands including Shantui, Sany and Liugong. Our bulldozer undercarriage assemblies are exported in large batches to South Africa, Guinea, Tanzania, Saudi Arabia, Russia and Southeast Asian markets. Global machinery distributors highly recognize our track frame products for ultra-solid structural durability, competitive factory FOB prices and flexible minimum order quantity. Our professional technical team provides full installation matching guidance and timely technical after-sales support for all international partners.
