803391064 XCMG GR2605 motor grader hose assembly

803391064 XCMG GR2605 motor grader hose assembly

Part Number: 803391064
Compatible Model: XCMG GR2605 Grader
Product Positioning: Used for hydraulic oil delivery and pressure transmission between key components such as hydraulic pumps, valve groups, and braking systems, ensuring smooth hydraulic circuit operation of the entire machine.

Key Technical Parameters

1. Pressure and Flow Performance
Rated Working Pressure: 42MPa
Instantaneous Impact Pressure: 62MPa
Anti-Pulse Life: ≥260,000 cycles (no leakage or rupture under rated pressure)
Recommended Working Flow Rate: 35~50L/min (suitable for medium and high pressure circuit flow requirements)

2. Structure and Dimensions
Structure: Three-layer reinforced composite structure (inner rubber layer + steel wire braided reinforcement layer + outer rubber layer)
Nominal Diameter: 16mm
Hose Inner Diameter / Outer Diameter: 16mm/29mm, ensuring efficient flow transmission
Standard Length: 1050mm (customizable according to original equipment manufacturer requirements), length tolerance ±13mm
Minimum Bending Radius: ≤110mm, suitable for complex equipment installation spaces
Connector Specifications: Compression fitting, interface thread G1″ (compliant with GB/T 9065 standard)

3. Material and Weather Resistance
Inner Layer: Imported oil-resistant nitrile butadiene rubber (NBR), oil swelling rate ≤2.3%, compatible with anti-wear hydraulic oil
Reinforcing Layer: High tensile strength galvanized steel wire braid, breaking strength ≥2010MPa, improving pressure resistance stability
Outer Layer: Wear-resistant and weather-resistant special synthetic rubber, Shore hardness 71HA, tear strength ≥18kN/m
Operating Temperature Range: -45℃~126℃, adaptable to alternating high and low temperature conditions
Corrosion Resistance: Outer layer is ozone-resistant and UV-resistant, salt spray test ≥500 hours without aging or cracking

Core Functions and Application Scenarios

1. Main Functions
* **High Pressure Transmission:** Stable delivery of high-pressure hydraulic oil to critical circuits such as brake valves and actuators.
* **Pressure Transmission:** Precisely transmits hydraulic system pressure, ensuring rapid response and uniform force from actuators.
* **Sealing and Protection:** Integrated sealing design of joints and rubber layers prevents oil leakage and impurity intrusion, protecting circuit cleanliness.
* **Buffering and Shock Absorption:** Rubber elastic structure absorbs equipment vibration and pressure fluctuations, reducing pipeline fatigue damage.

2.Suitable Working Conditions
* **Heavy-duty operations such as highway construction, mine stripping, and airport runway construction.**
* **Harsh working environments with high dust, mud and water erosion, and high-frequency vibration.**
* **Hydraulic system operating conditions with long-term continuous operation and high-frequency action switching.**
* **Outdoor operating scenarios with alternating high and low temperatures (-45℃~126℃).**

Product Advantages

* **Original Factory Compatibility:** Precisely matches the GR2605 hydraulic system interface specifications and installation layout, allowing direct installation without modification.
* **High Pressure Withstand:** 42MPa rated working pressure + 62MPa instantaneous impact pressure, suitable for the stringent requirements of medium and high pressure circuits.
* **Wear-Resistant and Durable:** Three-layer composite structure + High-strength steel wire reinforcement, anti-aging, wear-resistant, and long service life. Flexible and easy to install: Small bending radius design, suitable for installation in narrow spaces, allowing for flexible wiring. Reliable sealing: Compression fitting + high-quality inner rubber layer seal, leakage rate ≤5cm³/h, stable operation. Adaptable to various working conditions: Wide temperature tolerance + anti-pollution design, comprehensively addressing the complex operating environments of construction machinery.

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