Dongfeng VR truck parts Front suspension lug end bracket 2901259-KR6C0

Built to bear the extreme vertical and lateral loads of Dongfeng VR’s front suspension (up to 12 tons per axle), the bracket is fabricated from high-strength structural steel (Q460 grade) with a minimum yield strength of 460MPa and tensile strength of 550-670MPa—outperforming standard Q355 steel brackets by 28% in load capacity. The main body (12mm thick) integrates 16mm-thick triangular reinforcing ribs at stress concentration points (lug root, mounting hole edges), which distribute static and dynamic loads evenly across the axle beam. Under dynamic road conditions (e.g., potholes, uneven terrain), the bracket maintains maximum deflection ≤1.5mm (at full load), preventing leaf spring misalignment or suspension pin wear. This robust design ensures the suspension system retains stable performance during heavy-haul operations, reducing tire wear and improving ride comfort

Engineered to endure the repeated impact and fatigue of commercial truck operation, the bracket undergoes precision forging and heat treatment (quenching + tempering) to enhance toughness and fatigue life. The lug end features a seamless forging process, eliminating internal defects that could cause cracking under cyclic loads. It passes 2 million fatigue cycle tests (alternating load: 3-10 tons) without structural damage, exceeding the industry standard of 1.2 million cycles. The bracket’s rounded lug edge (radius 15mm) reduces stress concentration, while the chamfered mounting holes prevent bolt shear during sudden impacts (e.g., hitting curbs or road debris). In field tests, it withstands 50J impact force (equivalent to a 5kg object falling from 1m) with no deformation, ensuring the suspension system remains intact to protect the front axle and steering components

Designed to resist corrosion from road salt, moisture, and industrial contaminants—major threats to undercarriage components—the bracket features a comprehensive four-step anti-corrosion process. First, a phosphating pretreatment (15μm) forms a porous base for coating adhesion. Then, an electrophoretic primer (20μm) provides uniform rust inhibition. Next, a high-temperature electrostatic powder coating (80-100μm, epoxy-polyester composite) creates a scratch-resistant, waterproof barrier. Finally, a cathodic electrophoretic topcoat enhances chemical resistance. The bracket passes 1800-hour salt spray testing (ASTM B117) with no red rust, ensuring durability for over 8 years in coastal areas, snowy regions, or construction sites. The mounting holes are equipped with zinc-plated steel inserts, preventing thread rust and enabling easy disassembly during maintenance

Optimized for efficient maintenance in truck fleet operations, the bracket features tight-tolerance machining and user-friendly design elements. All mounting holes are drilled with concentricity error ≤0.1mm, ensuring perfect alignment with the axle beam’s pre-drilled holes and preventing bolt cross-threading. The bracket’s surface roughness is ≤1.2μm, ensuring flat contact with the axle beam for even load transfer. The package includes 8 M16×45 high-strength bolts (grade 10.9), lock washers, and flat washers—matching OE torque requirements (180-200N·m). Installation requires only a hydraulic torque wrench (no specialized tools), and two technicians can complete the replacement in 40 minutes or less. Clear alignment marks (“FRONT” and “TOP”) and part number labeling prevent incorrect installation, while the pre-greased lug interface reduces assembly time, minimizing truck downtime for fleet operators