Dongfeng GX truck parts Drive shaft with sliding fork assembly 2201010-HA431

Built to deliver engine torque to the rear axle with maximum efficiency, this assembly features a optimized structural design. The drive shaft tube is made of 45# seamless steel with a 5mm wall thickness, processed via cold rolling to enhance concentricity (≤0.1mm) and reduce rotational imbalance (≤5g·cm). The sliding fork, forged from 40Cr alloy steel, adopts a spline connection (6-spline, module 3) with precision grinding, ensuring smooth axial movement (stroke 80mm) to accommodate suspension travel while maintaining torque transmission. The assembly achieves a power transmission efficiency of ≥98.5%, minimizing energy loss compared to generic drive shafts (95% efficiency), directly contributing to 2-3% fuel savings under full-load conditions

Engineered to withstand the high torque output of Dongfeng GX’s 13L engines, the 2201010-HA431 assembly boasts exceptional structural performance. The seamless steel tube has a tensile strength of ≥650MPa and a torque capacity of 3800N·m, easily handling peak torque from the engine (up to 2500N·m) with a safety factor of 1.5. The sliding fork undergoes carburizing and quenching treatment (surface hardness HRC 58-62, core hardness HRC 30-35), enhancing wear resistance and fatigue strength. The flange yoke is welded to the tube via robotized MIG welding, with a weld strength of ≥500MPa, preventing separation under extreme load. All components pass 200,000-cycle fatigue testing (ASTM E466) without failure

Optimized for long-term reliability with minimal maintenance, the assembly integrates wear-resistant and self-lubricating features. The spline connection between the sliding fork and shaft is coated with molybdenum disulfide (MoS₂) for solid lubrication, reducing friction coefficient to 0.08 and eliminating the need for periodic grease addition. The sliding fork’s inner surface is honed to a roughness of Ra 0.8μm, minimizing spline wear even after 100,000km of operation. The center bearing (included in the assembly) uses double-row angular contact ball bearings with nitrile rubber seals (IP67), blocking dust and water to extend bearing life to ≥300,000km. A zinc-plated surface treatment on all steel components provides 1500-hour salt spray resistance (ASTM B117), preventing corrosion

This drive shaft assembly is designed for efficient installation and long-term cost savings for Dongfeng GX operators. The pre-assembled structure (drive shaft tube + sliding fork + flange yoke + center bearing + mounting hardware) allows a two-person team to complete replacement in 90 minutes using only a torque wrench and hoist—no on-site welding or balancing required. The OE-compatible flanges and splines eliminate alignment issues common with aftermarket shafts, which often cause vibration and differential damage (repair costs up to $2,000). Its high-strength materials and wear-resistant design extend service life to ≥800,000km—twice that of non-OE alternatives—reducing replacement frequency. Backed by a 3-year/500,000km Dongfeng warranty, it ensures reliable power transmission and predictable maintenance expenses