A4VSO Series Axial Piston Variable Pump (R902491300, A4VSO71DR/10R-FPB13N00 & Full Range)

1. Variable Displacement Design

   The pump adopts a swashplate-controlled variable displacement structure, allowing flexible adjustment of flow output according to system demands. This design maximizes energy efficiency, reduces power waste, and adapts to diverse working conditions—from low-speed high-torque operations to high-speed light-load scenarios.

2. High-Pressure Tolerance

   Built with robust alloy components and precision-machined piston assemblies, the A4VSO series withstands extreme working pressures, ensuring stable operation even in harsh environments such as mining sites and construction fields. It maintains consistent flow and pressure output without performance degradation.

3. Wide Model Compatibility

   The full product line covers small to large displacement requirements: the compact A4VSO71 and A4VSO71DR suit light-to-medium duty equipment, while A4VSO125 and A4VSO250 cater to heavy-duty hydraulic systems. The A4VSO250LR2D model is optimized for long-term continuous operation, ideal for stationary industrial machinery.

4. Easy Replacement & Interchangeability

   With the standardized dimension and interface design matching the OE specification (R902491300), the A4VSO series pump is a direct interchangeable replacement for original equipment. It requires no additional modification during installation, reducing downtime and maintenance costs for equipment operators.

5. Low Noise & Vibration

   Precision manufacturing processes minimize internal friction and mechanical resonance, resulting in low noise and vibration levels. This feature enhances operator comfort and extends the service life of adjacent hydraulic components.

• Construction machinery: Excavators, loaders, cranes and concrete pumps

• Mining equipment: Mining trucks, rock drills and conveyor systems

• Agricultural machinery: Harvesters, tractors and irrigation systems

• Industrial equipment: Hydraulic presses, injection molding machines and metalworking machinery

• High volumetric efficiency and low energy consumption

• Strong resistance to wear and corrosion, suitable for harsh working environments

• Long service life with minimal maintenance requirements

• Compatible with various hydraulic fluids, adaptable to different working temperatures

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