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A4PVFO
Rexroth
The A4PVFO is an advanced axial piston, variable displacement pump designed for sophisticated open-circuit applications requiring precise and efficient pressure control. This pump integrates a robust bent-axis design with intelligent pressure-flow regulation, making it the ideal core component for systems that demand high performance, energy savings, and reliable operation under varying load conditions.
Target Applications & Equipment:
This intelligent pump is engineered for mobile and industrial machinery where adaptive hydraulic power and pressure stability are critical:
Mobile Machinery: Advanced excavators, telehandlers, and mobile cranes utilizing load-sensing or pressure-compensated systems for superior controllability and fuel efficiency.
Industrial Processes: Plastic injection molding machines, hydraulic presses, and machine tools requiring stable pressure for precision forming and clamping.
Test & Simulation Equipment: Dynamometers, fatigue testers, and material testing rigs demanding accurate and programmable pressure profiles.
Specialized Vehicles: Aerial firefighting platforms, truck-mounted cranes, and other equipment where safe, controlled, and powerful hydraulic actuation is paramount.
Core Technology & Key Features:
Pressure-Compensated Variable Displacement: The defining feature of the A4PVFO series is its integrated pressure compensator. It automatically adjusts the pump's swashplate angle to deliver only the flow required to maintain a pre-set system pressure, minimizing energy loss, reducing heat generation, and extending component life.
Efficient Bent-Axis Design: Built on a proven bent-axis principle, the pump offers high power density, excellent starting characteristics, and smooth operation across its entire displacement range, contributing to overall system efficiency and reliability.
Load-Sensing (LS) Compatibility: Often configured for load-sensing systems, the pump delivers flow precisely matched to the highest demand in the circuit, providing exceptional metering control and further enhancing energy efficiency in multi-function machinery.
Robust Construction for Demanding Duty: Features a heavy-duty bearing system, hardened components, and a durable housing designed to withstand continuous operation at high pressures, ensuring longevity even in harsh operating environments.
Versatile Control Options: Available with various control configurations (e.g., pressure compensator with or without load-sensing limiter, electric power control), allowing for flexible integration into diverse hydraulic architectures and electronic control systems.
Through-Drive Capability: The standard through-drive shaft enables compact combination with other pumps or accessories, facilitating the design of complex multi-circuit systems from a single power source.
Engineered for Intelligent Performance & Reliability:
The A4PVFO is designed not just for power, but for smart power management. Its self-regulating nature protects the system, optimizes energy use, and provides stable, responsive control, leading to higher productivity and lower total operating costs.
Key Specifications (Typical):
Displacement Range: Available in multiple nominal displacements (e.g., A4PVFO 40, 71, 125, etc.) to suit various flow requirements.
Maximum Operating Pressure: Up to 350 bar (~5075 psi) continuous.
Primary Control: Pressure compensation (P control) is standard, with options for load-sensing (P + LS), electric displacement control, or torque limitation.