A4VSO125DFR/30L-PPB25N00 German Rexroth Piston Pump

A4VSO125DFR/30L-PPB25N00 German Rexroth Axial Piston Pump - Variable Displacement for Open Circuit

The A4VSO125DFR/30L-PPB25N00 is a high-performance swashplate-type axial piston variable pump manufactured by German Rexroth (Rexroth), designed specifically for open-circuit hydrostatic drives. With a nominal displacement of 125 cm³/r, it delivers reliable flow proportional to drive speed and offers infinite flow adjustment via swashplate angle. This model features DFR (Pressure/Flow Control), making it ideal for industrial machinery requiring precise hydraulic regulation under continuous 350 bar operation.

• Genuine German Rexroth Design - Full interoperability with original systems
• DFR Compound Control - Integrated pressure & flow regulation for energy saving
• High Pressure Rating - 350 bar nominal / 400 bar peak pressure capability
• Through-Drive Option - Allows mounting of additional pumps up to same nominal size
• Low Noise & Long Service Life - Optimized bearing and sealing design

Understanding the A4VSO125DFR/30L-PPB25N00 configuration ensures correct replacement and system matching:

Compatible with mineral oil (HLP) per DIN 51524. FKM (Viton) seals available upon request for phosphate ester or high-temperature fluids.

Unlike standard fixed displacement pumps, the A4VSO125DFR adapts to system demand:

• Energy Efficiency: The DFR control prevents unnecessary energy loss by adjusting flow and pressure simultaneously, reducing heat generation in large hydraulic presses and power units
• Robust Suction Characteristics: Engineered for stable operation even under demanding inlet conditions, minimizing cavitation risk in mining, metallurgy, and offshore equipment
• Modular Maintenance: The Series 30 design allows easy replacement of control blocks without disconnecting the pump from piping, reducing downtime by up to 30%
• Quiet Operation: Optimized swashplate bearing and piston-shoe interface ensure low noise levels (<75 dB(A) typical at rated conditions)

This German Rexroth piston pump is widely used in:

• Industrial Presses - Ceramic tile presses, powder metallurgy forming, forging presses (high pressure holding)
• Metallurgy & Mining - Rolling mill auxiliary drives, cooling bed hydraulics, crusher lubrication systems
• Marine & Offshore - Deck machinery, winch drives, steering gear
• Plastic Injection Molding - High-flow clamping units and injection units
• Hydraulic Test Benches - Power units requiring precise variable flow and pressure control

• Inspection: 100% performance tested on a calibrated hydraulic test bench before shipment (noise level, flow curve, pressure holding test)
• Packaging: Anti-rust VCI paper wrapping + heavy-duty plywood export crate (ISPM 15 compliant for sea/air freight)
• Warranty: 12-month limited warranty against manufacturing defects from date of shipment
• Documentation Included: Inspection certificate, packing list, and declaration of conformity