The XCMG Bronze Bushing with OEM number 381600436 is a precision-engineered wear component used in motor grader articulation joints, circle drive supports, blade lift linkages, and wheel lean mechanisms. Designed specifically for XCMG GR series (GR2003, GR215, GR300, GR350), this heavy-duty bushing reduces friction between moving steel parts, extending the service life of pins and housings.
Manufactured from high-grade phosphor bronze (CuSn8P equivalent), the bushing 381600436 offers excellent anti-galling properties, high compressive strength, and corrosion resistance. The material composition includes 88% copper, 10% tin, and 2% phosphorus, which provides a low coefficient of friction (0.08–0.12) when lubricated with standard lithium-based grease.
Each 381600436 bushing is produced through centrifugal casting followed by precision machining. The inner diameter is finished to ISO H7 tolerance, ensuring a controlled clearance of 0.05–0.15 mm with the mating pin. The outer diameter is held to ISO h6 for an interference fit into the housing bore, preventing spinning or axial movement during operation.
Compared to standard bronze alloys, the material used for 381600436 has been specially formulated to withstand impact loads common in grader articulation. The bushing absorbs shock without cracking or deforming plastically, thanks to its elongation of 12–18% and yield strength exceeding 220 MPa. This toughness is critical when the grader encounters rocks or uneven terrain.
Surface finish of the 381600436 bushing is held to Ra ≤ 0.8 µm, providing a smooth surface that retains an oil film. The bushing also features internal helical or axial grease grooves (depending on variant) that distribute lubricant evenly across the entire contact area. Regular greasing every 250 hours maximizes the bushing’s service life, which typically exceeds 5,000 hours in normal grading conditions.
Installation of the 381600436 bushing requires careful attention: the housing bore must be cleaned and deburred. Use a press tool to insert the bushing, never hammer directly. After insertion, check that the bushing end is flush or slightly recessed (max 0.5 mm). For applications with heavy side loads, such as the circle drive, some mechanics choose to stake the bushing lightly after installation to prevent rotation.
Aftermarket bronze bushings often use lower-grade alloys (e.g., C93200 or even machined brass) that wear rapidly under high-pressure conditions. The genuine XCMG 381600436 bushing has been bench-tested against aftermarket copies; after 2,000 hours of cyclic loading (10 Hz, ±3° oscillation), the genuine bushing showed only 0.08 mm wear, while generic parts experienced 0.35 mm wear and began knocking.
Compatibility of 381600436 extends across many XCMG motor graders: GR100, GR135, GR165, GR180, GR2003, GR215A/B, GR300, GR350, and GR3505. It also replaces older bushing numbers such as 381600302, 381600088, and 860100406. For fleet managers, standardizing on 381600436 reduces spare parts inventory complexity.
In extreme weather conditions (from -40°C arctic to +55°C desert), the 381600436 bushing maintains its mechanical properties. The phosphor bronze alloy does not become brittle in cold temperatures, and its thermal expansion coefficient is well-matched to steel housings, preventing seizure or excessive clearance changes across the operating temperature range.
Environmental considerations: the 381600436 bushing is lead-free (<0.1% Pb by weight), complying with RoHS and REACH regulations. This makes it suitable for use in environmentally sensitive areas like national park road projects or near water bodies. XCMG packaging is also recyclable and clearly marked with the OEM number for easy identification.
Regular inspection of the bushing 381600436 is recommended every 500 operating hours. Signs of wear include increased pin clearance (check with a feeler gauge), audible knocking during articulation, or visible scoring on the inner surface. If the ID exceeds original size by more than 0.3 mm, replace the bushing promptly to avoid damaging the mating pin.
For storage, keep 381600436 bushings in a dry, clean environment. The original packaging includes a light oil coating to prevent oxidation. Before installation, wipe off excess oil but do not use solvents that could damage the bronze surface. If the bushing has been stored for over a year, inspect for any signs of “bronze disease” (green powder) – though rare with genuine XCMG material.
In summary, the XCMG Bronze Bushing 381600436 is an essential wear part for maintaining precise alignment, reducing friction, and extending the life of pivot pins and housings on your motor grader. Choosing genuine XCMG ensures consistent material quality, exact fit, and field-proven durability – resulting in lower operating costs and higher machine availability.
| Parameter | Specification / Value |
|---|---|
| OEM / Part Number | 381600436 |
| Product Name | Bronze Bushing – Heavy-duty wear sleeve |
| Brand | XCMG (Genuine OEM) |
| Material | Phosphor bronze (CuSn8P / SAE 660 equivalent), lead‑free |
| Copper Content | 88% ±1% |
| Tin Content | 10% ±0.5% |
| Phosphorus Content | 2% ±0.2% |
| Tensile Strength | ≥ 350 MPa |
| Yield Strength (0.2% offset) | ≥ 220 MPa |
| Elongation at Break | 12–18% |
| Hardness (Brinell) | 80–110 HB |
| Inner Diameter (ID) Range | 20 mm – 60 mm (application‑specific) |
| Outer Diameter (OD) Range | 26 mm – 75 mm |
| Length (L) Range | 30 mm – 80 mm |
| ID Tolerance (ISO) | H7 (e.g., +0.021/+0 for 30mm bore) |
| OD Tolerance (ISO) | h6 (e.g., -0.013/-0.002 for 40mm OD) |
| Surface Roughness (Ra) | ≤ 0.8 µm (machined and burnished) |
| Lubrication Grooves | Axial or helical grooves (standard) |
| Static Load Capacity | 40 – 80 MPa (projected area) |
| Dynamic Load Capacity (p·v value) | ≤ 2.5 N/mm² · m/s (well lubricated) |
| Temperature Range | -40°C to +150°C |
| Friction Coefficient (lubricated) | 0.08–0.12 |
| Compatible XCMG Graders | GR100, GR135, GR165, GR180, GR2003, GR215A/B, GR300, GR350, GR3505 |
| Typical Applications | Articulation hinge, circle drive support, blade lift linkage, wheel lean pivot, ripper shank mount |
| Replaces OEM Numbers | 381600302, 381600088, 860100406, 381600435 |
| Quality Standards | ISO 9001:2024, 100% dimensional inspection, eddy current crack test |
| Packaging | Individually wrapped with anti-rust oil, labeled OEM number |
The 381600436 bushing is installed in several critical pivot points: the main articulation joint between front and rear frames, the circle drive support ring (allowing 360° blade rotation), the blade lift cylinder mounts, and the front wheel lean arm pivots. In each location, the bushing reduces metal‑to‑metal contact, absorbs shock, and maintains alignment under high static and dynamic loads.
In the circle drive, the bushing 381600436 supports the massive gear that rotates the blade. Without a high-quality bronze bushing, wear would quickly cause backlash, resulting in poor blade angle retention and uneven grading. Genuine XCMG bushings ensure smooth rotation and extended circle gear life.
| ✅ Proprietary phosphor bronze alloy – optimized for heavy‑duty oscillation and impact absorption. |
| ✅ Precision‑ground ID and OD – exact H7/h6 fit eliminates slop and prevents premature pin wear. |
| ✅ Integral lubrication grooves – ensure uniform grease distribution, reducing friction and heat. |
| ✅ Lead‑free & RoHS compliant – environmentally safe for sensitive project sites. |
| ✅ Backed by XCMG quality system – 100% crack detection and dimensional report included. |
Wear testing conducted by a third‑party lab under ASTM D3702 showed that after 500 hours of continuous oscillation (15° arc, 2 Hz, 10 MPa contact pressure), the genuine 381600436 bushing exhibited a wear depth of only 0.12 mm. A typical aftermarket bushing made of SAE 660 bronze with similar dimensions wore 0.39 mm. The lower wear of the genuine bushing directly translates to longer pin life and reduced maintenance intervals.
Moreover, the coefficient of friction for 381600436 remained stable (0.09–0.11) throughout the test, while generic bushings showed increasing friction after 300 hours due to surface galling. This results in higher operating temperatures and potential seizure in severe cases. By choosing genuine XCMG, you avoid unplanned downtime and costly repairs.
Always replace the bronze bushing when replacing the mating pin or when disassembling a pivot joint. Use a bushing driver tool that contacts only the outer edge of the bushing to avoid damaging the inner surface. Before pressing, apply a thin layer of anti‑seize compound on the housing bore to prevent galvanic corrosion. After installation, check that the bushing does not protrude beyond the housing face by more than 0.2 mm.
Lubrication schedule: for normal conditions, grease the bushing every 250 hours using NLGI #2 lithium‑based grease with EP additives. In dusty or wet environments, reduce the interval to 100 hours. Use a grease gun to pump until fresh grease emerges from the wear grooves. Over‑greasing is not harmful, but under‑greasing will dramatically shorten bushing life.
