803198745 XCMG GR2605 motor grader hose assembly

803198745 XCMG GR2605 motor grader hose assembly

The XCMG GR2605 grader 803198745 hose assembly is a customized fluid transmission core of the machine’s hydraulic system. Manufactured strictly according to XCMG’s original technical specifications, GB/T 3683.1-2011 hydraulic hose assembly standard, and ISO 1436-1999 safety requirements for engineering machinery hoses, it is specifically developed for the GR2605 grader’s specific hydraulic circuits (such as ripper cylinders, steering hydraulic systems, and braking circuits). It is perfectly suited for extreme operating scenarios involving high pressure fluctuations, high-frequency vibrations, and heavy sand and gravel wear, such as highway maintenance, mining stripping, airport runway construction, and large-scale earthwork projects. As a “customized transmission artery” of the hydraulic system, it achieves lossless and precise delivery of high-pressure hydraulic oil, ensuring the response speed and action accuracy of specific actuators. It avoids leaks, bursts, or transmission delays caused by improper compatibility with general-purpose hoses. It is an original factory-exclusive replacement part for GR2605 grader hoses that have aged, corroded joints, or lost pressure resistance, and can be directly installed on the machine without cutting or modification.

This hose assembly features a customized multi-layered reinforced structure: the hose body is customized according to the hydraulic circuit pressure rating, available in two specifications: medium-high pressure (3-layer structure) and ultra-high pressure (4-layer structure). The medium-high pressure version uses an oil-resistant nitrile rubber inner tube + 2 layers of steel wire braided reinforcement + a weather-resistant rubber outer layer, suitable for circuits below 31.5MPa; the ultra-high pressure version is upgraded to a fluororubber inner tube + 3 layers of high-pressure steel wire braided reinforcement + a wear-resistant polyurethane outer layer, suitable for high-pressure circuits of 40-50MPa. The inner tube is compatible with XCMG original anti-wear hydraulic oil (L-HM 46/68) and low-temperature hydraulic oil (L-HV 46), showing no brittleness at -40℃ and no swelling at 120℃. The reinforcement layer uses high-tensile-strength galvanized steel wire with a breaking strength ≥1900MPa and a burst pressure up to 3 times the rated pressure. There is no risk of steel wire loosening or hose bulging under high-frequency vibration conditions.

The connector connection system adopts a precise matching design: the connectors are customized according to the original vehicle interface, covering flange, compression fitting, and threaded types. The material is 45# steel, precision forged and then treated with phosphate and electrophoresis for double anti-corrosion, achieving a corrosion resistance level that meets the GB/T 10125 720-hour salt spray test standard, far exceeding ordinary galvanized connectors. The connector and hose use a hydraulic crimping process, with crimping accuracy controlled within ±0.05mm, connection strength ≥18kN, and no loosening during pull-out force testing. The sealing surface adopts a spherical seal + combined sealing ring structure, adapting to the taper and thread specifications of the original vehicle interface (such as M22×1.5, M24×2, SAE 12mm, etc.), and maintains pressure for 24 hours without leakage under rated pressure.

Enhanced Protection System for Adaptable Scenarios: The outer surface of the hose is wrapped with a customized wear-resistant nylon sheath, 3-5mm thick, focusing on covering areas in contact with the machine body and susceptible to sand and gravel impacts, improving wear resistance by 2 times and extending service life to 10,000 hours; key bending parts use elastic protective corrugated tubing, with a minimum bending radius as low as 120mm, suitable for installation in narrow spaces, avoiding damage to the internal steel wires caused by hard bending; the assembly is equipped with original factory-dedicated adjustable clamps and shock-absorbing brackets, which can absorb vibration energy after installation, reduce friction and collision between the hose and the machine body, and prevent the hose from cracking due to vibration fatigue.

The product’s specifications are perfectly matched to the original vehicle’s circuit: the hose inner diameter is customized according to flow requirements (12mm/16mm/19mm/25mm optional), the length precisely matches the installation path (300mm-2000mm customized production), and the connector angle (straight head/45°/90°) perfectly matches the original vehicle layout; before leaving the factory, the assembly undergoes a pressure resistance test of 1.5 times the rated pressure, a pulse fatigue test (1 million cycles without leakage), and a leakage test to ensure stability under extreme conditions; the installation torque is customized according to the connector type (threaded type ≤28N・m, flange type ≤45N・m), and a single person with special tools can complete the replacement in 15 minutes without adjusting the hydraulic circuit or modifying the mounting bracket.

This hose assembly has passed multiple authoritative certifications and tests: GB/T 3683.1-2011 Hydraulic Hose Assembly Pressure Pulse Test, ISO 6803 Hydraulic Hose Liquid Resistance Test, -40℃ to 120℃ High and Low Temperature Cyclic Test (no decrease in flexibility), 720-hour Salt Spray Corrosion Test (no rust at the joints); its sealing performance meets the IP67 protection standard, resisting immersion in mud and water and dust corrosion; it is compatible with specific hydraulic actuators such as the GR2605 grader’s ripper, steering system, and braking circuit, and has passed original factory installation verification, ensuring compatibility with hydraulic pumps, valve groups, and cylinders.

Core Technical Parameters

Part Model: 803198745
Part Name: Hose Assembly (Customized High-Pressure Hydraulic Transmission Hose Set)
Applicable Models: XCMG GR2605 motor grader
Compatible Components: GR2605 ripper cylinder, steering hydraulic system, brake circuit, high-pressure hydraulic valve group, and other specific hydraulic circuits
Material: Nitrile rubber/fluororubber inner tube, galvanized steel wire reinforcement layer, weather-resistant rubber/polyurethane outer layer, 45# steel forged joint, nylon wear-resistant sheath
Process: Customized multi-layer composite molding, high-pressure steel wire braiding, hydraulic precision crimping, double anti-corrosion treatment, scenario-based protective assembly
Core Parameters: Rated pressure 31.5-50MPa, burst pressure 94.5-150MPa, hose inner diameter 12-25mm, length 300-2000mm, bending radius ≤120mm, temperature range -40℃ to 120℃, protection rating IP67
Safety Certifications: GB/T 3683.1-2011 Hydraulic Hose Standard, ISO 1436-1999 Safety Standard, IP67 Protection Certification
Features: Customized precise fit, ultra-high pressure load capacity, double corrosion protection, scenario-specific wear-resistant protection, vibration resistance and leak prevention
Functions: Fluid transmission in specific hydraulic circuits, ensuring precise actuator operation, resisting high pressure impact and abrasion from gravel, adapting to extreme high and low temperature environments, avoiding system failures caused by improper fit

Core Advantages

Original factory customized development, perfectly adapted to specific hydraulic circuits, no modification required; multi-layer reinforced structure + precise crimping, ultra-high pressure load capacity without leakage; double anti-corrosion connectors + wear-resistant sheaths, extending service life to 10,000 years Durable for hours; scenario-based protection design specifically addresses wear and tear issues; customized lengths and connector types ensure quick and easy installation; verified by the original manufacturer, its compatibility and stability far exceed that of general-purpose hoses, guaranteeing efficient operation of the hydraulic system.

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