The 381400218 Bracket is a precision-engineered structural component designed specifically for XCMG motor graders. This heavy-duty bracket serves as a critical mounting point for the blade linkage and hydraulic cylinder assemblies. Manufactured from high-strength ductile iron, the 381400218 bracket ensures exact alignment of moving parts, reducing wear and extending equipment service life. As a genuine XCMG replacement part, it meets all original equipment specifications for fit, form, and function.
The 381400218 Bracket is produced using a precision sand-casting process that eliminates internal porosity and delivers consistent mechanical properties. Each unit undergoes 100% dimensional inspection to guarantee perfect alignment with mating components. The bracket features reinforced ribbing at high-stress zones, providing exceptional resistance to bending and torsional loads encountered during heavy grading operations. This component is essential for maintaining blade stability and accuracy on XCMG GR series graders.
Engineered for extreme durability, the 381400218 Bracket is treated with a zinc-nickel corrosion-resistant coating that withstands exposure to road salts, moisture, and abrasive materials. The bracket’s mounting holes are precision-bored to accept standard M20 bolts, ensuring easy installation without reaming or modification. Whether you’re performing routine maintenance or a complete undercarriage rebuild, this OEM-grade bracket provides the reliability that XCMG owners demand.
| Parameter | Specification |
|---|---|
| OEM Number | 381400218 |
| Product Name | Bracket (Attachment Mounting Bracket) |
| Brand | XCMG (Genuine OEM) |
| Material | High-strength ductile iron (QT600-3) |
| Casting Process | Precision sand casting + heat treatment |
| Tensile Strength | ≥ 600 MPa |
| Yield Strength | ≥ 370 MPa |
| Hardness (HB) | 190–240 HB |
| Surface Treatment | Zinc-nickel coating, 15µm thickness |
| Mounting Hole Diameter | 4x M20 (20.5mm clearance) |
| Overall Dimensions (L×W×H) | 310 × 140 × 105 mm |
| Net Weight | 9.8 kg (21.6 lbs) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300, GR350 Motor Graders |
| Warranty | 12 months / 2,000 operating hours |
Aftermarket brackets often use lower-grade cast iron that cracks under stress. The genuine 381400218 Bracket from XCMG incorporates a proprietary rib design that distributes loads evenly across the component. Finite element analysis (FEA) confirms a 40% higher fatigue life compared to generic alternatives. This means fewer unexpected failures, reduced downtime, and lower total ownership cost for your grader fleet.
Each 381400218 Bracket is serialized and traceable to its heat lot, ensuring full material accountability. XCMG’s quality management system (ISO 9001:2015) governs every step from raw material sourcing to final packaging. Ultrasonic testing validates the absence of internal voids, while coordinate measuring machines (CMM) verify critical dimensions to within ±0.2mm. This rigorous process guarantees that every bracket performs exactly as engineered.
Installation of the 381400218 Bracket requires standard hand tools and should be performed by a qualified technician. Begin by supporting the blade assembly with a suitable jack. Remove the four mounting bolts securing the old bracket. Clean the mating surface on the grader frame thoroughly. Apply thread locker (medium strength) to the new bolts before torquing to 300 Nm in a cross pattern. Re-check torque after 10 hours of operation.
Regular inspection of the 381400218 Bracket is recommended every 500 operating hours. Look for cracks around the mounting holes or along the ribbing. Use a dye penetrant test if any surface irregularity is suspected. The zinc-nickel coating should remain intact; touch up any scratches with zinc-rich paint to prevent corrosion. A well-maintained bracket can last over 12,000 hours even in severe applications such as mining and road construction.
Upgrading to the genuine 381400218 Bracket restores original blade geometry and reduces lateral play in the circle turn mechanism. Operators report smoother blade movement, improved grading accuracy, and reduced hydraulic cylinder drift. The bracket’s precision-machined pivot points eliminate binding that can cause uneven wear on the blade rails and slide plates.
Field tests on XCMG GR215 graders demonstrated that replacing worn brackets with the 381400218 reduced blade vibration by 31% at operating speeds. This directly translates to a finer surface finish and less operator fatigue. The improved rigidity also protects downstream components like the blade lift cylinders and ball joints from shock loads.
XCMG’s foundry utilizes automated molding lines and robotic pouring to ensure consistent metallurgy. The 381400218 Bracket is produced in batches of 500, with three samples per batch destructively tested for tensile and yield strength. The heat treatment process (normalizing + tempering) refines the pearlitic grain structure, providing an optimal balance of strength and ductility. This attention to detail is why XCMG is a trusted name in heavy equipment worldwide.
All 381400218 Brackets are packed in foam-lined cartons to prevent damage during transit. Each box includes a certificate of conformity and a QR code linking to the online installation manual. For fleet operators, bulk orders are available with batch traceability for easy inventory management.
The 381400218 Bracket directly replaces original part numbers 381400219 (right side counterpart) and 381400220 (updated revision). It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders manufactured from 2014 onward. It also fits certain models of the GR200 and GR240 series with minor modifications to the mounting hardware. Always verify your grader’s serial number before ordering.
When replacing both left and right brackets, order two units of 381400218 along with new mounting bolts (XCMG part number 860112345) and lock washers. Using fresh fasteners ensures proper clamp load and prevents loosening due to vibration. XCMG recommends replacing the bracket every 9,000 hours or immediately after any visible deformation.
