The 380603545 Connecting Rod is a genuine OEM mechanical linkage component manufactured by XCMG for motor graders and heavy construction equipment. This precision‑machined connecting rod transmits motion and force between control levers, hydraulic valve spools, and actuating mechanisms on XCMG GR series graders.
Engineered from high‑strength carbon steel with a corrosion‑resistant zinc‑plated finish, the 380603545 connecting rod is designed to withstand tensile and compressive loads, vibration, and environmental exposure. It directly replaces worn, bent, or cracked connecting rods in blade lift linkages, ripper control systems, and articulation mechanisms.
Each unit is precision machined to exact length and end‑fitting tolerances, with deburred edges and accurately positioned pivot holes. The connecting rod ensures precise, backlash‑free transmission of operator commands to hydraulic valves, maintaining smooth and responsive machine control.
| Parameter | Specification |
|---|---|
| OEM Number | 380603545 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Mechanical Connecting Rod / Linkage Rod |
| Material | High‑strength carbon steel (C45 / 1045), heat treated |
| Surface Finish | Zinc plating + yellow chromate (500h salt spray) |
| Overall Length (center to center) | 250 mm ±0.2 mm |
| Rod Diameter | 16 mm |
| End Fitting Type | Clevis / fork ends, both sides, M12 threads |
| Bore Diameter (clevis) | 12.2 mm (for 12 mm pins) |
| Clevis Width | 20 mm |
| Hardness (Rockwell) | HRC 25‑30 (through hardened) |
| Tensile Strength | > 800 MPa (116,000 psi) |
| Yield Strength | > 600 MPa |
| Thread Type (both ends) | M12 × 1.75 (right‑hand thread) |
| Adjustability | Non‑adjustable (fixed length) |
| Operating Temperature | -40°C to +120°C |
| Weight | 0.35 kg (0.77 lbs) |
| Corrosion Protection | 500+ hours salt spray (ASTM B117) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 |
| Superseded Part Numbers | 380603501, 380603512, 380603528 |
| Certifications | ISO 9001:2015, ISO 14001, CE |
The XCMG 380603545 Connecting Rod is a critical component in the mechanical linkage between operator controls and hydraulic valves. It converts the motion of a control lever into precise movement of a valve spool, regulating oil flow to cylinders. Without a rigid, correctly‑sized connecting rod, operator commands become imprecise, leading to sluggish or erratic machine response.
Typical applications include the blade lift control linkage, ripper raise/lower mechanism, and articulation lock linkage. The 380603545 connecting rod features clevis ends on both sides, which accept standard 12 mm pins secured by cotter pins or retaining rings. The rod is machined from solid bar stock, not welded, eliminating weak points.
When original connecting rods become bent from overload, corroded from moisture, or worn at the clevis holes, replacing them with genuine XCMG parts restores precise, backlash‑free control. A bent rod can cause non‑linear valve response, while worn holes introduce play, reducing grading accuracy.
Each 380603545 connecting rod is produced from heat‑treated C45 steel bar. The rod is centerless ground to a precise 16 mm diameter, then CNC machined to create the clevis ends. The clevis bores are reamed to 12.2 mm diameter with a tolerance of +0.05 / -0 mm, ensuring a snug fit on pins without binding.
The overall length (center‑to‑center of clevis holes) is held to ±0.2 mm, critical for maintaining correct valve spool centering. After machining, the rod is through‑hardened to HRC 25‑30, then zinc plated with yellow chromate for corrosion resistance. Each rod is 100% inspected for straightness (runout ≤ 0.1 mm).
XCMG subjects each batch to tensile testing (proof load 20 kN) and salt spray testing (500 hours ASTM B117). The rod must withstand 1 million load cycles at ±10 kN without fatigue failure.
Replacing the connecting rod is straightforward. Raise the cab floor or remove access panels to reach the linkage. Remove the cotter pins and pull out the clevis pins. Detach the old rod. Install the new 380603545 rod, ensuring the clevis ends face the correct orientation (both forks aligned). Insert the pins and secure with new cotter pins.
After installation, operate the control lever and verify that the valve spool moves smoothly through its full stroke without binding. If the rod is not the correct length (non‑adjustable), you may need to adjust the position of the clevis pins or shim the mounting brackets. The factory length is calibrated for neutral spool position when the lever is centered.
Lubricate the clevis pins with grease before insertion. Torque any locking nuts to 25 Nm. Re‑check after 50 operating hours, as initial settling may occur.
Aftermarket connecting rods are often made from low‑carbon steel that bends easily, or from welded assemblies that break at the weld. The genuine XCMG rod is machined from a single piece of heat‑treated steel, providing superior strength and fatigue resistance. Aftermarket rods may also have incorrect clevis widths, causing side play and accelerated wear.
Counterfeit rods often skip the heat treatment and zinc plating, leading to rapid corrosion and bending under normal loads. The 380603545 is through‑hardened and plated to XCMG’s original specifications. Additionally, genuine rods have laser‑etched part numbers for traceability.
XCMG provides a 12‑month warranty against manufacturing defects. This supersedes older numbers 380603501 and 380603512, with improved corrosion resistance and a stronger clevis design.
Common indicators that a connecting rod needs replacement: visible bending (even slight), rust pitting on the rod surface, elongated clevis holes, or loose fit on pins. Also, if the control lever feels spongy or has excessive free play before the valve moves, the rod or its end fittings are likely worn.
Preventive replacement every 5,000 operating hours is recommended for rods in high‑use applications (blade lift, ripper). The cost of a genuine connecting rod is minimal compared to the cost of mis‑graded material or hydraulic valve damage caused by erratic control.
When rebuilding control linkages, always replace connecting rods as a set (left and right sides). Keep a stock of 380603545 rods in your parts inventory for rapid field replacement.
The 380603545 Connecting Rod is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3‑7 business days worldwide. Expedited shipping (1‑2 days) is available for urgent repairs.
Bulk orders (10+ pieces) receive volume discounts and can be shipped via sea freight. Each connecting rod is individually wrapped in anti‑corrosion paper and boxed. For large fleets, consignment stock programs are available to ensure immediate availability.
Don’t let a worn or bent connecting rod compromise machine control. Order the genuine XCMG 380603545 Connecting Rod today and restore precise, responsive operation.
The 380603545 Connecting Rod is a testament to XCMG’s engineering excellence. While a small component, it directly affects operator feel and grading accuracy. Keep spare rods in your service truck for field repairs, and always replace with genuine XCMG parts.
Upgrade your motor grader’s control precision with the XCMG genuine connecting rod. Engineered for strength, straightness, and corrosion resistance – order now and experience the quality that keeps your grader productive.
