Rexroth A2V Series Axial Piston Pump | A2V250 A2V500 A2V1000 Variable Hydraulic Pump Replacement

Genlu Hydraulic proudly introduces our A2V Series (covering 250, 355, 500, 1000 cc/rev displacements) high-performance bent-axis axial piston variable displacement pumps. This series is engineered as a seamless, high-value replacement for the classic heavy-duty Rexroth A2V series utilized in both open and closed circuits. Renowned for its time-tested bent-axis design and spherical valve plate layout, the A2V series delivers outstanding self-priming capability and unmatched shock resistance in large-displacement operations. Genlu guarantees 100% Drop-in Interchangeability in mounting flanges, drive shaft profiles, control valve block interfaces (including HD, HS, HR mechanisms), and performance curves compared to original Rexroth units. Every A2V variable pump undergoes 100% simulation testing under severe load cycles to ensure maximum dynamic response and volumetric efficiency under heavy industrial demands.

Technical Specifications

• Product Series: Rexroth A2V Series Bent-Axis Axial Piston Variable Pump

• Key Configuration Model: A2V250HDE0R5GP-K / A2V250HS / A2V250HR5GP

• Displacement Range: 250 cc/rev, 355 cc/rev, 500 cc/rev, 1000 cc/rev

• Rated Operating Pressure: 35 MPa (350 bar)

• Peak Pressure: 40 MPa (400 bar)

• Max Self-Priming Speed: 1500 rpm (Based on A2V250 size; specific speed limits apply to larger displacements)

• Control Modes: HD (Hydraulic Pilot Control) / HS (Control with Potentiometer Feedback) / HR (Electro-hydraulic Proportional Servo Control)

• Rotation: Clockwise (R) or Counter-Clockwise (L)

• Fluid Distribution: Spherical Valve Plate Design

Key Technical Advantages:

• Proven Bent-Axis & Spherical Valve Technology: Featuring a large swivel angle (up to 25°), the bent-axis design paired with a spherical valve plate offers automatic self-centering and wear compensation. This guarantees ultra-low internal leakage and premium volumetric efficiency under highly cyclical, high-pressure loads.

• Advanced Electro-Hydraulic Closed-Loop Control: Supporting integrated potentiometer feedback (POTI) and servo-proportional actuators, these pumps link seamlessly with master PLCs for digital closed-loop control, managing swashplate angles for ultra-precise displacement, speed, and power regulation.

• Rigid Heavy-Duty Bearing System: Outfitted with premium, high-load tapered roller bearing arrangements capable of absorbing enormous axial and radial hydraulic counter-forces, maximizing continuous service life under severe operational stresses.

• Superior Self-Priming & Anti-Cavitation Architecture: The unique flow geometry of the bent-axis layout reduces intake resistance compared to conventional swashplate configurations, providing exceptional self-priming behavior at large flow volumes and lowering system cavitation risks.

Application Areas:

• Heavy Forging & Metallurgy: Main power pumps for large four-column hydraulic presses, metal balers, and rolling mill hydraulic drives.

• Marine & Offshore Engineering: Hydraulic power units for marine deck winches, crane slewing systems, and steering gear networks.

• Mining & Tunnel Boring: Pump stations for tunnel boring machine (TBM) cutterhead drives and heavy mining fluid systems.

Expert Maintenance Tips:

• Mandatory Housing Pre-Priming: As a large-displacement bent-axis pump, the casing must be fully filled with clean hydraulic oil via the highest drain port prior to commissioning. Rotate the coupling manually several times to fully lubricate the spherical valve plate interface and piston assemblies.

• Potentiometer & Servo Signal Calibration: For models configured with HS/HR controllers featuring a potentiometer (POTI), zero-position and full-scale electrical calibrations must be executed upon integration with the control cabinet to ensure closed-loop feedback accuracy.

• Suction Pressure Management: Due to massive intake volumes, closely monitor the inlet vacuum. In self-priming configurations, absolute suction pressure must not drop below 0.08 MPa (-0.2 bar). An independent auxiliary charge pump is strongly recommended when required.