The 803103852 Hydraulic Fitting is a genuine OEM 90° swivel elbow designed by XCMG for motor grader fluid power systems. This precision-engineered adapter provides leak-free connections between hoses and hydraulic components in brake lines, steering circuits, and implement hydraulics. Manufactured from high-strength carbon steel with zinc-nickel plating, the 803103852 fitting offers exceptional corrosion resistance and durability. It is fully compatible with XCMG GR135, GR165, GR180, GR215, and GR300 motor graders, ensuring a perfect fit for your equipment.
The 803103852 Fitting features an O-ring boss (ORB) thread on the swivel end and a male JIC 37° flare on the fixed end. This configuration allows easy routing of hydraulic lines around tight corners without kinking, reducing installation time and preventing premature hose failure. The swivel nut is pre-lubricated and spins freely to prevent hose twisting during assembly. Each unit is tested to 1.5 times the rated working pressure to guarantee zero leakage under extreme conditions.
| Parameter | Specification |
|---|---|
| OEM Number | 803103852 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Swivel Elbow / 90° Fitting |
| Angle | 90° swivel elbow |
| Swivel End Thread | ORB (O-Ring Boss) 9/16″-18 UNF |
| Fixed End Thread | JIC 37° flare, 7/8″-14 UNF male |
| Material | Carbon steel (C45 / 1045), heat-treated |
| Surface Finish | Zinc-nickel plating (12-15µm), trivalent chromate |
| Working Pressure | 4000 PSI (275 bar / 27.5 MPa) |
| Burst Pressure | 16,000 PSI (1100 bar / 110 MPa) |
| Tensile Strength | 600 MPa (87,000 psi) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Hex Size (Nut) | 22 mm / 7/8″ |
| Seal Material | Fluorocarbon (FKM) O-ring, pre-installed |
| Corrosion Resistance | 500+ hours salt spray (ASTM B117) |
| Standards | ISO 12151-2, ISO 9001:2015 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300 motor graders |
| Warranty | 12 months / unlimited hours |
The XCMG 803103852 Hydraulic Fitting is a critical component in the fluid power system of your motor grader. It creates a leak-proof connection between hoses and hydraulic components in brake lines, steering circuits, and implement hydraulics. XCMG GR series graders operate at a working hydraulic pressure of 16 MPa (2,320 psi).
The 803103852 fitting is rated for 4,000 PSI (27.5 MPa) working pressure and 16,000 PSI (110 MPa) burst pressure, providing a substantial safety margin. This robust construction ensures the fitting can withstand pressure spikes during sudden valve actuation or cylinder stall events without failing.
The 90° swivel elbow design allows easy routing of hydraulic lines around tight corners without kinking. The swivel nut spins freely to prevent hose twisting during assembly, reducing installation time and preventing premature hose failure from internal stress.
The 803103852 fitting is manufactured from high-strength carbon steel (C45 / 1045 grade), then heat-treated to achieve a tensile strength of 600 MPa. This ensures the fitting can withstand the mechanical stresses of heavy grading applications without deforming or cracking.
The zinc-nickel plating (12-15µm) with trivalent chromate provides over 500 hours of salt spray resistance per ASTM B117. This corrosion protection is essential for graders operating in winter road maintenance, coastal environments, or high-humidity conditions.
The pre-installed O-ring is made of fluorocarbon (FKM), which resists high temperatures up to 120°C and aggressive hydraulic oils. The captured swivel nut design prevents loss of components during maintenance, a practical feature for field repairs.
Each 803103852 hydraulic fitting is manufactured to ISO 12151-2 standards, with certified material traceability. The threads are rolled rather than cut, which improves fatigue strength and ensures consistent engagement. The steel body undergoes a de-embrittlement step after plating to eliminate hydrogen embrittlement.
XCMG tests every batch of fittings to 150% of rated working pressure using a hydrostatic test stand. Any fitting that shows signs of leakage or deformation is rejected. Thread gauges verify that every fitting meets the required GO/NO‑GO standards, guaranteeing trouble‑free installation.
Independent tests show that OEM fittings have 3x longer fatigue life than generic alternatives, reducing the risk of sudden hydraulic failure. This durability is critical for graders operating in remote locations where downtime is costly.
Proper installation of the 803103852 fitting is essential for achieving a leak‑free seal. Before installation, clean the mating ports and threads of any dirt or debris. Apply a small amount of clean hydraulic oil to the O-ring and threads to lubricate them during tightening.
For the ORB end, screw the fitting into the port by hand until the O-ring contacts the boss, then tighten 1/4 to 1/2 turn beyond finger tight. Do not overtighten, as this can damage the O-ring or distort the sealing surface.
For the JIC end, tighten the swivel nut to 35 Nm (26 ft-lbs) using a torque wrench with the correct socket. After installation, run the hydraulic system and inspect the fitting for any signs of leakage. If a small weep is observed, tighten the fitting an additional 1/8 turn.
Aftermarket hydraulic fittings often use lower‑grade steel that can crack under pressure or develop corrosion within months. The genuine XCMG 803103852 is manufactured from heat‑treated carbon steel and finished with a high‑durability zinc‑nickel coating.
Counterfeit fittings may have incorrect thread dimensions, leading to cross‑threading or improper sealing, which can damage expensive port threads in valve blocks or cylinder housings. The 803103852 matches the original thread specifications exactly.
XCMG provides a 12‑month warranty against manufacturing defects. Each fitting is stamped with the XCMG logo or comes in branded packaging. Using genuine XCMG fittings ensures compatibility, reliability, and the protection of your valuable equipment.
Common indicators that a hydraulic fitting needs replacement include visible rust or corrosion, thread damage (galling, cross‑threading, or stripping), deformation of the hex flats, and evidence of leakage such as wetness around the joint or oil drips.
Preventive inspection of hydraulic fittings should be performed every 500 operating hours or during routine maintenance intervals. Look for signs of rust, seepage, or damage. If a fitting is found to be corroded or damaged, replace it immediately with a genuine 803103852 fitting.
When replacing hydraulic hoses or components, always install new fittings rather than reusing old ones. Old fittings may have damaged threads or degraded sealing surfaces that will not provide reliable service.
Keep a stock of 803103852 fittings in your parts inventory for rapid field repairs. The cost of a genuine fitting is negligible compared to the cost of a hydraulic system failure or the downtime caused by a loss of pressure.
The 803103852 Hydraulic Fitting 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 (20+ fittings) receive volume discounts and can be shipped via sea freight. Each fitting is individually wrapped in anti‑corrosion paper or supplied in sealed bags. For large fleets, consignment stock programs are available to ensure immediate availability.
Don’t let a leaking or corroded hydraulic fitting compromise your grader’s performance or safety. Order the genuine XCMG 803103852 Hydraulic Fitting today and restore reliable, leak‑free hydraulic connections.
The 803103852 Hydraulic Fitting is a small but vital component in your motor grader’s hydraulic system. A single leaking fitting can cause loss of pressure, reduced implement speed, and messy oil spills that harm the environment and create slip hazards.
Keep spare fittings in your service truck for every repair, and always replace with genuine XCMG parts. Upgrade your motor grader’s hydraulic reliability with the XCMG genuine fitting. Engineered for strength, precision, and corrosion resistance – order now and experience the quality that keeps your grader productive and leak‑free.
