803111806 XCMG GR2605 motor grader hose assembly

803111806 XCMG GR2605 motor grader hose assembly

The 803111806 hose assembly is a core component of the XCMG GR2605 grader’s original factory-designated hydraulic system. It is compatible with the machine’s high-pressure hydraulic system, undertaking the crucial tasks of stable hydraulic oil delivery and pressure transmission. It directly impacts the accuracy and response speed of key actuators such as the front wheel tilt control circuit, the left articulated steering main oil circuit, and the hydraulic valve group input branch lines. In harsh operating environments characterized by long-term heavy loads, high-frequency vibration, and dust and mud erosion, such as highway construction, mine stripping, airport runway construction, and large-scale earthwork projects, it can reliably withstand high-pressure impacts and is less prone to bursting, oil leakage, aging cracking, and other malfunctions. This effectively reduces the frequency of hydraulic system downtime for maintenance, ensuring continuous equipment operation efficiency.

The hose features a three-layer reinforced composite structure with optimized design. The inner tube is made of imported oil-resistant nitrile rubber (NBR), with an oil swelling rate of ≤2.1% and excellent chemical corrosion resistance. It is compatible with XCMG original L-HM 46/68 anti-wear hydraulic oil and high-temperature hydraulic oil. The middle layer is a high-tensile-strength galvanized steel wire braided reinforcement layer, using a high-density braiding process, with a breaking strength ≥2080MPa, providing more stable pressure resistance and better deformation resistance. The outer rubber layer is made of wear-resistant and weather-resistant special synthetic rubber material with a Shore hardness of 69HA, excellent flexibility, UV aging resistance, and outstanding resistance to sand and gravel abrasion. It showed no cracking or fading after 6400 hours of outdoor aging testing. The connector is precision forged from 40# steel and then treated with phosphate and galvanizing for double anti-corrosion. It is equipped with original custom fluororubber (FKM) sealing rings, achieving an IP66 protection level for sealing performance. It perfectly matches the original vehicle interface specifications and can directly replace aged or damaged original vehicle hoses.

List of Compatible Hydraulic Components

Front Wheel Tilt Control Circuit (Compatible Cylinder Model 803090598)
Left Articulated Steering Main Circuit (Compatible Cylinder Model 803083235)
Hydraulic Valve Assembly Input Branch Pipeline (Compatible with GR2605 High-Pressure Valve Assembly)
Side Push Cylinder Main Control Circuit (Compatible with GR2605 Dedicated Model)
Hydraulic Pump Inlet Main Branch Pipeline (Matching Original High-Pressure Hydraulic Pump)
High-Pressure Accumulator Main Connection Pipeline (Supports System Pressure Stability)
Brake Assist Hydraulic Circuit Branch (Compatible with Wet Brake Drive Axle)

Core Parameters

Part Model: 803111806
Product Name: Hose Assembly
Applicable Models: XCMG GR2605 Motor Grader
Application: High-pressure oil transmission and pressure transfer in hydraulic systems
Structure: Three-layer reinforced composite structure (imported NBR inner tube + High-density steel wire braid + special synthetic rubber outer layer) Rated working pressure: 45MPa Instantaneous impact pressure: 65MPa Working temperature range: -45℃ to 129℃ Hose inner diameter: 20mm Standard length: 1150mm (customizable to original factory requirements) Features: Suitable for medium and high pressure applications, impact and fatigue resistant, long-lasting leak-proof seal, wear-resistant and weather-resistant, precise original factory fit, excellent flexibility Applicable working conditions: Heavy-duty flat ground operations such as highways, mines, airports, and earthmoving.

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