The 804017813 Swivel Fitting is a genuine OEM hydraulic rotary connector manufactured by XCMG for motor graders and heavy construction equipment. This precision‑engineered swivel fitting allows 360° free rotation between hydraulic hoses and rigid tubing, preventing hose twisting and fatigue in dynamic applications. Constructed from high‑strength carbon steel with a corrosion‑resistant zinc‑nickel plating, the 804017813 swivel fitting is designed to withstand extreme operating pressures up to 18 MPa (2,610 psi) in the load‑sensing hydraulic systems of XCMG GR series motor graders.
The swivel fitting incorporates precision‑machined ball bearings and advanced seal technology, ensuring smooth rotation without leakage even under continuous pressure. It directly replaces damaged, worn, or leaking swivel fittings on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. The 804017813 fitting is commonly used in steering circuits, front‑wheel drive systems, and implement control lines where relative motion between components occurs.
Each unit is manufactured to exact dimensional tolerances, with rolled threads for enhanced fatigue strength and a smooth sealing surface. The fitting plays a vital role in maintaining system integrity, preventing fluid leaks, and ensuring consistent hydraulic performance across all implement functions. Proper installation and regular inspection of the 804017813 help maximize machine uptime and reduce costly downtime.
| Parameter | Specification |
|---|---|
| OEM Number | 804017813 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Swivel Fitting / Rotary Connector |
| Material | High‑strength carbon steel (C45 / 1045 grade), heat treated |
| Surface Finish | Zinc‑nickel plating + trivalent chromate (500h salt spray) |
| Rotation Type | 360° free swivel, low torque |
| Thread Standard | BSPP (G‑thread) / Metric threads (varies by application) |
| Maximum Operating Pressure | 18 MPa (180 bar / 2,610 psi) |
| Proof Pressure | 24 MPa (240 bar / 3,480 psi) |
| Burst Pressure | ≥ 48 MPa (480 bar / 6,960 psi) |
| Operating Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Seal Material | Fluorocarbon (FKM) / Nitrile (NBR) |
| Swivel Torque (dry) | < 2 Nm at rated pressure |
| Corrosion Resistance | 500+ hours salt spray (ASTM B117) without red rust |
| Standards Compliance | ISO 9001:2015, ISO 14001, CE, RoHS |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Warranty | 12 months / unlimited hours |
The XCMG 804017813 Swivel Fitting is a critical component that prevents hose twisting and fatigue in hydraulic circuits where relative motion occurs between the hose and the rigid mounting point. In motor graders, this includes steering articulation, front‑wheel drive lines, and implement control hoses that flex as the machine articulates and the blade rotates.
Without a swivel fitting, hydraulic hoses would be subjected to torsional stress every time the grader articulates. This stress leads to premature hose failure, leaks, and sudden loss of function. The 804017813 eliminates this risk by allowing the hose to remain stationary while the fitting rotates with the moving component.
XCMG motor graders operate at working hydraulic pressures of 16 MPa (160 bar) to 18 MPa (180 bar). The GR215 model, for example, has a working hydraulic pressure of 18 MPa. The 804017813 swivel fitting is designed to handle these pressures with a substantial safety margin, featuring a proof pressure of 24 MPa and a burst pressure exceeding 48 MPa.
The fitting is commonly used in the front‑wheel drive hydraulic system, which includes union connectors, base hose assemblies, motor drive units, and valve control groups. It also integrates with the steering hydraulic system, where priority valves and steerize units demand flexible, leak‑free connections.
The 804017813 swivel fitting incorporates precision‑machined ball bearings that provide smooth, low‑friction rotation even under high pressure. The bearing raceways are hardened and ground to ensure long wear life and consistent performance. The fitting uses a dual‑seal system: a primary FKM (fluorocarbon) seal that withstands high temperatures and aggressive hydraulic fluids, and a secondary NBR (nitrile) wiper seal that excludes dirt and debris.
The housing is manufactured from high‑strength carbon steel, then heat‑treated to achieve a tensile strength of 600 MPa. The zinc‑nickel plating with trivalent chromate provides over 500 hours of salt spray resistance per ASTM B117, essential for graders operating in coastal environments or winter road salt applications.
The swivel torque under pressure is less than 2 Nm, ensuring that the fitting does not impose additional load on the hoses or machine structure. Each unit is 100% tested for internal leakage and rotational performance at rated pressure before leaving the factory. This rigorous testing guarantees a leak‑free, smooth‑operating component that will last for thousands of operating hours.
The threads are rolled rather than cut, which improves fatigue strength and ensures consistent engagement. The rolled thread process also eliminates sharp edges that could damage seals during assembly. The fitting is available with BSPP (G‑thread) or metric thread configurations to match the specific requirements of your XCMG motor grader.
Proper installation of the 804017813 swivel fitting is essential for achieving a leak‑free seal and smooth rotation. Before installation, clean the mating ports and threads of any dirt, old thread sealant, or debris. Apply a small amount of clean hydraulic oil to the threads and the swivel joint to lubricate the seals.
Thread the fitting into the port by hand until it is snug. Then, using a torque wrench with the correct socket, apply the final torque. For M14 threads, typical torque values range from 35-45 Nm; for M16 threads, 45-55 Nm. Always refer to the XCMG service manual for the exact specification for your application. Over‑tightening can damage the threads or distort the swivel mechanism, while under‑tightening will result in leaks.
After installation, run the hydraulic system and inspect the fitting for any signs of leakage. Rotate the fitting through its full range of motion to verify smooth operation. If a small weep is observed, tighten the fitting an additional 1/8 turn. If leakage persists, remove the fitting and inspect the threads and sealing surfaces for damage. Replace the fitting if necessary.
Never reuse a fitting that has been over‑tightened or damaged. Always use new O‑rings or sealing washers when reinstalling a swivel fitting. Keep a stock of 804017813 fittings in your parts inventory for rapid field repairs.
Aftermarket swivel fittings often use lower‑grade steel that can crack under pressure, or inferior seals that leak within months. The genuine XCMG 804017813 is manufactured from heat‑treated carbon steel and finished with a high‑durability zinc‑nickel coating, providing long‑term reliability in demanding environments. Aftermarket fittings may also have inconsistent thread dimensions, leading to cross‑threading or improper sealing.
Counterfeit swivel fittings often omit the critical bearing elements, resulting in high rotational torque and premature wear. The 804017813 includes precision‑ground ball bearings that ensure smooth, free rotation throughout the life of the fitting. Additionally, genuine XCMG fittings are batch‑tested for pressure integrity and rotational performance, whereas counterfeit products rarely undergo any quality control.
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. Independent tests show that OEM swivel fittings have significantly longer fatigue life than generic alternatives.
Common indicators that a swivel fitting needs replacement include visible oil leakage from the swivel joint, excessive rotational resistance (stiffness), rust or corrosion on the housing, thread damage, and evidence of external damage. Also, if the hydraulic system exhibits slow response or loss of pressure, a failing swivel fitting may be the cause.
Preventive inspection of swivel fittings should be performed every 500 operating hours or during routine maintenance intervals. Rotate the fitting by hand (with the hydraulic system depressurized) to feel for smooth movement. If you detect roughness, binding, or excessive play, replace the fitting immediately.
When replacing hydraulic hoses or components, always install new swivel fittings rather than reusing old ones. Old fittings may have worn seals or bearing surfaces that will not provide reliable service. Keep a stock of 804017813 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, environmental cleanup, or the downtime caused by a loss of pressure.
Implementing a proactive replacement program for swivel fittings every 4,000 to 6,000 operating hours can significantly reduce unplanned breakdowns and extend the life of your motor grader’s hydraulic hoses.
The 804017813 Swivel 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 and reduced downtime.
Don’t let a leaking or stiff swivel fitting compromise your grader’s hydraulic performance or safety. Order the genuine XCMG 804017813 Swivel Fitting today and restore reliable, leak‑free rotary connections in your motor grader’s hydraulic system.
The 804017813 Swivel Fitting is a small but vital component in your motor grader’s hydraulic system. A seized or leaking swivel can cause hose twisting, premature hose failure, and oil spills. 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 swivel fitting. Engineered for strength, smooth rotation, and corrosion resistance – order now and experience the quality that keeps your grader productive and leak‑free.
