803202752 XCMG GR2605 motor grader accumulator

803202752 XCMG GR2605 motor grader accumulator

Part Number: 803202752
Compatible Model: XCMG GR2605 Grader
Product Positioning: Used to store hydraulic energy, buffer pressure fluctuations, compensate for leakage, ensure the pressure stability of key circuits such as braking system and working device, and provide emergency power. It is a key component for improving the stability and safety of hydraulic system.

Key Technical Parameters

1. Pressure and Energy Storage Performance
Rated Working Pressure: 35MPa
Maximum working pressure: 42MPa
Pre-charge Pressure: 14~16MPa (Nitrogen pre-charge, adaptable to system operating conditions)
Effective Volume: 10L (energy storage capacity meets emergency response requirements)
Pressure Fluctuation Compensation Range: ±0.5MPa (stabilizes system pressure)

2. Structure and Dimensions
Structure Type: Bladder-type accumulator (separate gas-liquid chamber design)
Installation Method: Vertical installation, compatible with original hydraulic system brackets
Interface Specifications: Inlet/Outlet G1″ (compression fitting, conforms to GB/T 9065 standard)
Dimensions: Cylinder diameter 120mm, total length 580mm, weight ≤28kg
Blade Material: Nitrile rubber (NBR) reinforced bladder, oil-resistant and anti-aging

3. Material and Weather Resistance
Cylinder Body Material: High-quality alloy steel plate Q345R (rolled + welded + heat treated), tensile strength ≥470MPa
End cap material: High-strength aluminum alloy 6061-T6 (anodized)
Seals: Imported fluororubber (FKM) sealing components, suitable for working environments from -40℃ to 125℃
Corrosion resistance: Cylinder body painted + end cap anodized, no rust after ≥800 hours of salt spray testing
Fatigue life: ≥1 million pressure cycles (fail-free under 35MPa conditions)

Core functions and application scenarios

1. Main Functions
* **Emergency Energy Storage:** Stores high-pressure hydraulic energy to provide emergency power for critical actions such as braking and steering in case of hydraulic pump failure or sudden power outage.
* **Pressure Stabilization and Buffering:** Absorbs pressure pulses and shocks in the hydraulic system, stabilizing circuit pressure and reducing wear on valve groups and pipelines.
* **Flow Compensation:** Compensates for system leakage and instantaneous flow demand, avoiding frequent start-stop of the hydraulic pump and improving system efficiency.
* **Thermal Expansion Compensation:** Absorbs the volume expansion caused by the increase in hydraulic oil temperature, protecting the system from overpressure damage.
* **Energy Recovery:** Recovers the potential energy during braking or descent of the working device, converting it into hydraulic energy for reuse and reducing energy consumption.

2.Suitable Operating Conditions
* **Heavy-duty, high-frequency operation scenarios such as mining stripping and large-scale infrastructure construction.**
* **Operating conditions with large hydraulic system pressure fluctuations and high instantaneous flow demand.**
* **Operations requiring energy recovery, such as braking on long downhill slopes and high-frequency impact from rippers.**
* **Harsh outdoor environments with alternating high and low temperatures, dust, and mud and water erosion.**
* **Complex operating scenarios with high requirements for braking and steering safety.**

Product Advantages

**Original Factory Compatibility:** Fully compatible with GR2605 Hydraulic system interface specifications and installation layout allow for direct installation without modification, compatible with original factory valve assemblies and pipelines.
High-pressure energy storage: 42MPa maximum working pressure + 10L effective volume, ample energy storage, reliable emergency backup.
Stable and efficient: The bladder-type structure provides rapid response, with pressure fluctuation compensation accuracy ≤±0.5MPa, improving system stability.
Durable: High-strength cylinder body + reinforced bladder, fatigue-resistant, corrosion-resistant, and long service life.
Safe and reliable: Integrated safety valve and rupture disc provide dual protection against overpressure risks, meeting engineering machinery safety standards.
Easy maintenance: Nitrogen pre-charge port design facilitates charging and pressure testing; the bladder can be replaced individually, reducing maintenance costs.

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