| OEM Number | 380903659 |
|---|---|
| Brand / Manufacturer | XCMG (Original Equipment) |
| Part Name | Fork / Steering Yoke (GR215Ⅹ.13.1-1A) |
| Material | Forged high-strength alloy steel (42CrMo4) |
| Surface Treatment | Zinc-nickel plating (12-15 μm) + black passivation |
| Overall Length | 285 mm ±0.5 mm |
| Fork Width (inside) | 56 mm +0.1/-0.0 mm |
| Pin Hole Diameter | 25 mm (reamed to H7 tolerance) |
| Ultimate Tensile Strength | ≥ 1080 MPa |
| Yield Strength (0.2%) | ≥ 930 MPa |
| Hardness | HRC 32-38 (after heat treatment) |
| Compatible Models | XCMG GR215, GR215A, GR215D, GR180 (with adaptor), GR260 |
| Certification | ISO 9001:2015, XCMG factory standard Q/XCMP 031-2023 |
The 380903659 Fork is a drop-forged component with optimized grain flow, eliminating weak points common in cast or welded alternatives. Its unique geometry distributes steering loads evenly across the fork arms, reducing stress concentration at the pin bore. Each fork is 100% magnetic particle inspected for surface cracks.
Unlike generic steering yokes, the genuine 380903659 features precision-machined thrust faces and a hardened pin bore (HRC 52-56 after induction hardening). This reduces wear on the steering pin and eliminates premature play, maintaining accurate wheel alignment even after thousands of hours.
Field tests on XCMG GR215 graders in heavy road construction showed the OEM fork lasted over 15,000 hours without failure, outperforming aftermarket forged yokes by 60% in fatigue life. This translates to fewer steering linkage overhauls and lower operating costs.
The 380903659 fork is produced from vacuum-arc-remelted 42CrMo4 alloy steel, which offers exceptional impact toughness at low temperatures (KV ≥ 40J at -40°C). After precision forging, the part undergoes normalized heat treatment followed by quenching and tempering to achieve the specified hardness profile. The result is a fork that resists bending even under abusive steering impacts.
XCMG graders frequently operate on uneven terrain where steering forces can spike unexpectedly. The 380903659 fork’s robust design includes reinforced fillets at the transition zone, increasing fatigue strength by 35% over previous designs. The zinc-nickel coating provides 1,000+ hours of salt spray protection, essential for graders working in coastal or salt-spray environments.
Direct replacement for XCMG part 380903659. No rework needed – bolt-on upgrade for GR215 series graders.
Forged construction with optimized grain flow ensures resistance to cyclic steering loads up to 5 million cycles.
Zinc-nickel with black passivation exceeds 1,000 hours salt spray test (ASTM B117).
Induction-hardened bore (HRC 52-56) reduces pin wear and maintains steering precision.
Before installing the 380903659 fork, clean the steering cylinder rod end and wheel spindle boss. Apply anti-seize lubricant to the pin bore and thrust faces. Torque the retaining bolt to 280-320 Nm using a calibrated torque wrench. Always replace the lock washer and cotter pin.
After installation, cycle steering fully left and right to check for binding. Grease the steering pin every 250 hours using NLGI #2 extreme pressure grease. Inspect the fork arms annually for signs of deformation or cracks using magnetic particle inspection. If any damage is found, replace immediately.
Keep spare forks 380903659 in climate-controlled storage to preserve the coating. Replace as a set with the mating steering pin for optimal performance. Record replacement hours in your fleet maintenance system.
Counterfeit forks often use inferior cast steel or low-grade forgings without proper heat treatment, leading to sudden fracture under shock loads. The genuine 380903659 fork includes full traceability, laser-etched part number, and a certificate of conformance to XCMG’s Q/XCMP 031-2023 standard.
Using non-genuine steering forks can cause misalignment, accelerated tire wear, and even loss of steering control. Protect your operator and machine with OEM components. Genuine XCMG forks also come with a 24-month warranty against manufacturing defects.
For fleet managers, standardizing on the 380903659 fork reduces inventory complexity across multiple GR215 and GR260 graders. One part number serves both left and right steering linkages, simplifying spare parts management. Genuine XCMG forks are available through authorized distribution channels with global logistics support.
Order your genuine 380903659 Fork today using the “Send Email” or “Inquiry Now” buttons above. Request a technical drawing, bulk pricing, or expedited shipping. Keep your XCMG grader’s steering system precise and reliable with OEM-quality components.
*All technical data based on XCMG original equipment standards. Performance may vary depending on installation and operating conditions. Always refer to your grader’s service manual for specific torque values and inspection intervals.
For any additional inquiries regarding the 380903659 Fork (GR215Ⅹ.13.1-1A) or other XCMG grader steering components, please contact our parts specialists via the buttons above. We are committed to providing genuine parts and expert support to keep your fleet moving forward.
The 380903659 fork also features an integrated grease relief groove that channels excess lubricant away from the thrust face, preventing hydraulic lock. XCMG’s design includes a chamfered pin entry for easier assembly in the field. For graders operating in abrasive environments, the fork’s hardened surface resists scratching from sand and dust. Invest in genuine XCMG quality to maintain steering accuracy and operator safety throughout the life of your machine.
