The 803103852 Fitting is a precision-engineered hydraulic adapter designed for XCMG motor grader fluid power systems. This fitting provides leak-free connections between hoses, tubes, and hydraulic components. The 803103852 fitting is manufactured from high-strength carbon steel with zinc-nickel plating, ensuring exceptional corrosion resistance and durability. It is commonly used in brake lines, steering circuits, and implement hydraulics on GR series graders.
The 803103852 Fitting features a 90-degree swivel elbow design with O-ring boss (ORB) threads on one end and a male JIC 37° flare on the other. This configuration allows easy routing of hydraulic lines around tight corners without kinking. The swivel nut is pre-lubricated and spins freely to prevent hose twisting during installation. Each fitting is tested to 1.5 times the rated working pressure to guarantee zero leakage under extreme conditions.
Engineered for heavy-duty applications, the 803103852 Fitting has a working pressure rating of 4000 PSI and a burst pressure of 16000 PSI. The steel body is heat-treated to achieve a tensile strength of 600 MPa. The zinc-nickel coating provides 500+ hours of salt spray resistance, making it ideal for graders operating in winter road maintenance or coastal environments. Using genuine XCMG fittings prevents thread galling and ensures proper sealing.
| Parameter | Specification |
|---|---|
| OEM Number | 803103852 |
| Product Name | Fitting (Hydraulic Swivel Elbow) |
| Brand | XCMG (Genuine OEM) |
| Material | Carbon steel (C45 / 1045), heat-treated |
| Surface Treatment | Zinc-nickel plating (12-15µm), trivalent chromate |
| Thread Type 1 (Swivel) | ORB (O-Ring Boss) 9/16″-18 UNF |
| Thread Type 2 (Fixed) | JIC 37° flare, 7/8″-14 UNF male |
| Angle | 90° swivel elbow |
| Working Pressure | 4000 PSI (275 bar) |
| Burst Pressure | 16,000 PSI (1100 bar) |
| Temperature Range | -40°C to +120°C |
| Hex Size (Nut) | 22 mm / 7/8″ |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300 |
| Warranty | 12 months / unlimited hours |
Aftermarket fittings often use inferior steel and lack proper heat treatment, leading to thread galling or cracking under vibration. The genuine 803103852 Fitting from XCMG is manufactured to ISO 12151-2 standards, with certified material traceability. Each fitting is 100% tested for thread conformity and leak resistance. Independent tests show that OEM fittings have 3x longer fatigue life than generic alternatives, reducing the risk of sudden hydraulic failure.
The 803103852 Fitting includes a pre-installed O-ring made of fluorocarbon (FKM), which resists high temperatures and aggressive hydraulic oils. The swivel nut features a captured design that prevents loss during maintenance. XCMG’s plating process includes a de-embrittlement step to eliminate hydrogen embrittlement, a common failure mode in high-strength steel fittings. This attention to detail ensures safe, long-lasting performance.
Installing the 803103852 Fitting requires clean threads and proper torque. Apply a small amount of clean hydraulic oil to the O-ring and threads before assembly. Screw the ORB end into the port by hand until the O-ring contacts the boss, then tighten 1/4 to 1/2 turn beyond finger tight. For the JIC end, tighten the swivel nut to 35 Nm (26 ft-lbs). Never use Teflon tape on ORB fittings as it can damage the O-ring.
Inspect the 803103852 Fitting during each hydraulic oil change. Look for any signs of seepage, corrosion, or damage to the swivel nut. If the fitting is removed, always replace the O-ring (XCMG part 803103853) to ensure a proper seal. Avoid over-torquing, which can deform the O-ring or crack the fitting body. A well-maintained fitting can last the lifetime of the machine, but replacement is recommended if any thread damage is visible.
Leaking hydraulic fittings waste oil, create slip hazards, and reduce system efficiency. The genuine 803103852 Fitting maintains a perfect seal even through extreme pressure spikes and temperature cycles. Fleet operators report a 90% reduction in hydraulic oil top-ups after replacing all aftermarket fittings with XCMG OEM parts. The precise 90° angle also improves hose routing, reducing chafing and extending hose life by up to 50%.
In a controlled test on an XCMG GR215 grader, swapping to genuine 803103852 Fittings eliminated a persistent drip from the steering circuit. The improved seal also allowed the hydraulic pump to maintain steady pressure, reducing cycle times for blade movements. For contractors who value uptime, OEM fittings prevent unexpected breakdowns caused by fluid loss and component starvation.
XCMG’s fitting factory uses CNC Swiss-type lathes to produce the 803103852 Fitting to tolerances of ±0.05mm on critical dimensions. After machining, each fitting is heat-treated in a vacuum furnace to prevent surface oxidation. The zinc-nickel plating is applied in a fully automated line with real-time thickness monitoring. Every batch is tested for salt spray resistance (ASTM B117) and thread go/no-go gauging.
All 803103852 Fittings are individually packed in sealed plastic bags with a desiccant. Boxes of 10 or 50 fittings are available for fleet maintenance. Each box includes a certificate of conformance with the heat number and plating batch ID. XCMG’s global distribution network ensures that these fittings are available from regional warehouses, minimizing shipping time.
The 803103852 Fitting directly replaces original part numbers 803103851 and 803103853. It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders. This fitting is also used in the brake master cylinder lines, steering orbital valve connections, and blade lift cylinder circuits. Always verify the thread size and angle before ordering. For straight fittings, refer to part 803103850.
When rebuilding a hydraulic system, replace all O-rings and backup rings along with the 803103852 Fitting. Use genuine XCMG hydraulic oil (ISO VG 46) to maintain seal compatibility. XCMG recommends replacing fittings every 6,000 hours or whenever the machine is overhauled. Keep a small stock of these fittings in your service truck to avoid downtime due to damaged adapters.
For custom configurations or bulk pricing, use the buttons above to contact our team. We can provide fittings with alternate plating (e.g., zinc-cobalt) for extremely corrosive environments. Always provide your grader’s serial number when ordering the 803103852 Fitting to ensure correct application.
