Dongfeng xinjiang truck parts Direct pull rod assembly 3412110-T5M301Y

Built to deliver accurate, responsive steering control, this direct pull rod assembly features a rigid structure that minimizes deflection during steering. The main rod is forged from 45# carbon steel (quenched and tempered to HRC 28-32), ensuring high torsional strength (≥500MPa) and low elastic deformation—critical for transmitting steering force from the gearbox to the wheels without lag. The integrated ball joints use high-precision bearing steel (GCr15) with a surface roughness of ≤0.4μm, reducing friction and ensuring smooth rotation (swivel angle: ±30°) for precise steering adjustments. Unlike flexible or low-grade rods, this assembly maintains consistent length under load, preventing steering play (tested to ≤0.5mm endplay after 100,000 cycles) and ensuring the truck tracks straight at high speeds (60-100km/h). This precision enhances driving stability, especially during heavy-haul or off-road operations

Engineered to endure the extreme mechanical stress of truck steering systems—including axial tension, compression, and lateral impact—the assembly features reinforced components for long-term reliability. The rod’s ends are welded to the ball joint housings using robotic MIG welding (weld strength ≥400MPa), eliminating weak points that could fail under load. The ball joint seals are made of double-lip nitrile rubber (NBR) with a stainless steel dust cover, preventing grease leakage and contaminant ingress (tested to IP67 dust/water resistance). The assembly’s maximum axial load capacity (50kN) exceeds the steering system’s peak operating load (35kN), providing a safety margin for emergency steering maneuvers. In durability tests, the assembly maintains functionality after 200,000 steering cycles (equivalent to 500,000km of driving), ensuring a service life of over 3 years for heavy-duty applications

Designed to resist corrosion from road salt, mud, rain, and steering fluid leaks, the direct pull rod assembly features multi-layer protective treatments. The main rod undergoes a zinc plating process (12μm thickness) followed by a clear passivation layer, providing base corrosion resistance. Ball joint housings are coated with electrophoretic paint (80μm) that adheres tightly to the metal surface, resisting scratches and chemical damage. The stainless steel dust cover and hardware (lock nuts, cotter pins) are made of 304 stainless steel, avoiding rust even in coastal or winter road conditions. This corrosion protection system passes 800-hour salt spray testing (per ASTM B117) with no red rust, ensuring the assembly maintains structural integrity and smooth operation for over 5 years in harsh environments

Designed for efficient installation, the direct pull rod assembly comes pre-assembled with all necessary components—main rod, ball joints, dust covers, lock nuts, and cotter pins. The ball joints are pre-lubricated with high-temperature lithium grease (operating range -40℃ to 150℃), eliminating the need for on-site lubrication. Installation steps are straightforward: align the rod’s tapered ends with the steering gearbox and knuckle arm sockets, secure with the included lock nuts (torque to 180-200N·m), and insert cotter pins for safety. No specialized tools (e.g., ball joint presses) are required, as the assembly matches the OE “drop-in” design. A professional technician can complete installation in 45 minutes or less, avoiding time-consuming adjustments to the steering system. This easy installation design reduces labor costs and minimizes truck downtime—critical for commercial operations relying on reliable steering