The A4VSO71 series axial piston variable pump—represented by the specific model AA4VSO71LR2/10R-VPB13N00 (compatible with part reference R910968213)—is a high-performance hydraulic component engineered for precision, reliability, and versatility in demanding industrial and mobile applications. Available in multiple control configurations, including DR, DRG, LR2, LR2G, DFR, FR, EO1, and EO2, this series caters to diverse system requirements while maintaining consistent performance across all variants.

At its foundation, the pump features a robust axial piston structure paired with a variable displacement mechanism, allowing infinite adjustment of hydraulic fluid output by modifying the swashplate angle. This design ensures the pump dynamically adapts to real-time system demands, delivering flow rates proportional to operational needs—from maximum output down to near-zero—thereby optimizing energy efficiency and reducing unnecessary power consumption. The AA4VSO71LR2/10R-VPB13N00 model’s "LR2" designation indicates a load-sensing control setup, while "10R-VPB13N00" specifies standardized mounting and sealing parameters, ensuring seamless integration with universal hydraulic power units.

Built to withstand rigorous operating conditions, the series operates at a nominal pressure of up to 350 bar and a peak pressure of 400 bar, making it suitable for high-load applications. Key components—including hardened steel pistons, a precision-machined cylinder block, and a durable swashplate—are engineered for exceptional wear resistance, ensuring long service life even under continuous high-pressure operation. Advanced sealing technology compliant with the VPB13N00 standard prevents fluid leakage, while the compact, heat-dissipating housing maintains stable performance across a temperature range of -20°C to 80°C.

With optimized internal flow paths and a balanced piston arrangement, the pump achieves volumetric efficiency exceeding 95%, minimizing energy loss and operational noise (as low as 75 dB at rated speed). This combination of efficiency and low noise makes it ideal for both indoor manufacturing environments and outdoor mobile equipment.

The A4VSO71 series offers a full range of control options to suit specific application needs:

This diversity allows the pump to integrate seamlessly into hydraulic systems for construction machinery, mining equipment, industrial presses, machine tools, and mobile hydraulic units.

The A4VSO71 series is compatible with common hydraulic fluids, including mineral oils (ISO VG 32-68), synthetic esters, and fire-resistant HFC fluids (when paired with compatible seals), adapting to harsh environments such as high-temperature foundries, cold-weather construction sites, and humid industrial settings. Its standardized SAE mounting flange and shaft interface ensure compatibility with most hydraulic motors and power units, simplifying installation for new systems or replacement projects.

For maintenance and repairs, the pump features a modular design that allows easy access to internal components (valves, seals, bearings), reducing downtime and service costs. The R910968213 part reference enables direct interchangeability for worn or damaged units, ensuring quick replacements without extensive system modifications.

Whether used in new hydraulic systems or as a replacement component, the A4VSO71 series axial piston variable pump delivers consistent performance, precise control, and long-term durability. Its combination of robust construction, versatile control options, and easy integration makes it a cost-effective solution for critical industrial and mobile applications, supporting optimal productivity and operational reliability.