SANY Genuine Piston Pump V30GL280LD2FV0/LRDRE1-B2

1. Product Overview

2. Structure & Materials

• Pump Body: Made of high-strength ductile iron with an integrated rear cover. It boasts high rigidity, effective vibration and noise reduction, and lowered risk of internal leakage.
• Piston & Cylinder Block: Adopts high-alloy wear-resistant steel with surface nitriding treatment. It is anti-wear, high-pressure resistant and impact resistant, perfectly suited for heavy-load and impact-prone mining operations.
• Valve Plate: Manufactured from bronze alloy through high-precision grinding, delivering high volumetric efficiency, low wear and long service life.
• Swashplate & Return Mechanism: Constructed with high-strength forged alloy steel. It features excellent fatigue resistance and fast response to support variable displacement regulation.
• LRDRE1 Control Module: Integrated with electro-proportional solenoid, pressure cut-off valve and power adjustment spring to realize multi-mode intelligent control.
• Seals: Imported fluoroelastomer (FKM) seals, resistant to high pressure and oil temperature ranging from -40℃ to 120℃. They are anti-aging and leakage-proof.
• Bearings: Reinforced heavy-duty roller bearings capable of bearing high radial and axial loads to extend service life.

3. Core Technical Parameters

• Model: V30GL280LD2FV0/LRDRE1-B2
• Theoretical Displacement: 280 mL/r (single pump)
• Rated Pressure: 35 MPa (350 bar)
• Peak Pressure: 40 MPa (400 bar)
• Maximum Flow: 2×504 L/min (dual pump confluence)
• Control Mode: LRDRE1 (Mechanical Power + Electro-proportional Displacement + Pressure Cut-off)
• Driving Speed: Rated 1800 rpm; Maximum 2200 rpm
• Operating Temperature: -40℃ ~ 120℃
• Filtration Precision: ≥10μm (high-pressure filtration)
• Weight: Approx. 280 kg
• Compatible Engine: Scania DC16 (574 kW/2100 rpm)

4. Control Principle & Functions

• Electro-proportional Displacement Control: Receives ECU electrical signals (0–5V/4–20mA) to adjust the swashplate angle steplessly. It accurately regulates output flow to match load requirements for energy conservation and high efficiency.
• Mechanical Power Limiting: Built-in power spring automatically matches engine output power to prevent engine stall caused by overload and ensure stable heavy-duty operation.
• High-pressure Cut-off: When system pressure exceeds 35 MPa, the pump automatically reduces displacement to limit the maximum pressure and protect hydraulic components such as pumps, valves and pipelines.
• Integrated Electronic Control (ICT): Fully compatible with the electronic control system of SY980H. It enables flow sharing, unpowered boom lowering and coordinated compound movements, lifting the overall energy efficiency by over 30%.

5. Core Advantages

• Genuine Product & Perfect Compatibility: Custom-designed exclusively for SANY SY980H. It fully matches the original mounting dimensions, ports and control logic for plug-and-play installation without extra commissioning.
• Heavy-duty & High-pressure Design for Mining: With 35 MPa rated pressure and 40 MPa peak pressure, it has strong impact and contamination resistance, ideal for harsh heavy-duty working conditions in stone mines and coal mines.
• High Efficiency & Low Fuel Consumption: Combined full electronic control and electro-proportional control realizes on-demand oil supply and reduces overflow loss, resulting in remarkably lower fuel consumption compared with previous generations.
• High Reliability & Long Service Life: Equipped with reinforced bearings, wear-resistant pistons and premium seals. Verified under extreme working conditions, its service life reaches no less than 10,000 hours.
• Low Noise & Vibration for Stable Operation: The integrated rear cover and optimized flow channel design reduce vibration and noise, creating a better operating environment.

6. Common Faults & Consequences

• Insufficient Flow & Slow Movement: Caused by worn pistons, scratched valve plate or faulty electro-proportional valve. Consequences include weak digging performance, uncoordinated compound movements and reduced working efficiency.
• Abnormal Pressure & Overflow: Caused by stuck pressure cut-off valve or seal leakage. It leads to high oil temperature, increased fuel consumption and easy damage to hydraulic parts.
• Abnormal Noise & Excessive Vibration: Caused by damaged bearings, loose pistons or insufficient oil suction. The pump will vibrate and generate loud noise, and may even stop running in severe cases.
• Internal Leakage & High Oil Temperature: Caused by aged seals and worn valve plate. It results in system overheating, low efficiency and accelerated aging of components.

7. Application Scope

• Applicable Machine: SANY SY980H Mining Excavator (Operating weight: 95 tons, Bucket capacity: 5.5–8.0 m³)
• Engine: Scania DC16 Direct Injection Engine (574 kW/2100 rpm)
• Installation Position: Beside the hydraulic oil tank at the flywheel end of the engine, serving as the power source of the main hydraulic system
• Applicable Working Conditions: Large-scale mining, heavy-duty earthwork and continuous high-load operation