A4VSO250LR2G/30L-PPB25N00 German Rexroth A4VSO250 series piston pump
The Rexroth A4VSO250 series is a swashplate-type axial piston variable displacement pump designed for open circuit (open loop) hydraulic systems. With a nominal displacement of 250 cm³/r, it delivers high flow at pressures up to 350 bar continuous / 400 bar peak. Manufactured in Germany, the A4VSO250 is available in multiple control versions—including constant pressure (DR), pressure & flow compound (DFR), and electro-proportional (EO2)—making it suitable for heavy-duty industrial applications such as hydraulic presses, steel mill drives, marine power units, and large injection molding machines.
| Parameter | Value |
|---|---|
| Manufacturer | Rexroth, Made in Germany |
| Series | A4VSO - Open Circuit Axial Piston Variable Pump |
| Nominal Size | 250 |
| Geometric Displacement Vg max | 250 cm³/r (250 mL/r) |
| Nominal Pressure | 350 bar |
| Peak Pressure | 400 bar |
| Maximum Speed nnom | Approx. 1500 rpm |
| Theoretical Flow @1500 rpm | Approx. 375 L/min |
| Required Drive Power @350 bar & 1500 rpm | Approx. 219 kW |
| Torque @350 bar & Vg max | Approx. 1391 Nm |
| Typical Control Options | DR / DFR / LR2 / EO2 / MA (model dependent) |
| Rotation | R (Right) or L (Left) - per model suffix |
| Mounting Flange & Ports | SAE / ISO - PPB13 or PPB25 per variant |
| Through Drive | Available on selected variants (tandem capable) |
| Hydraulic Fluid | Mineral Oil HLP, HFC Water-Glycol permissible (derated) |
| Approximate Weight | 184 kg |
- Swashplate design with infinitely variable displacement for on-demand flow and energy saving
- Rated for 350 bar continuous / 400 bar peak — suitable for heavy industrial loads
- Excellent suction characteristics and low noise operation
- Modular control system: DR, DFR (load sense), LR2 (power control), EO2 (electro-proportional)
- Through-drive option allows tandem pump combinations (A4VSO + gear pump or smaller A4VSO)
- Compatible with variable speed drive (VSD) systems
- Long-life heavy-duty bearings and high-strength cast iron housing
- Hydraulic presses - ceramic presses, forging presses, stamping lines
- Metallurgy - rolling mills, continuous casting machines, blast furnace hydraulics
- Marine & offshore - winches, cranes, deck machinery hydraulic power packs
- Heavy machinery - tunnel boring machine (TBM) auxiliaries, mining equipment
- Industrial test rigs and large injection molding machines
No. The A4VSO series is designed exclusively for open circuit (open loop) systems. For closed circuits, use the A4VG or A4VM series.
DR is constant pressure control only. DFR adds flow control via an external pilot signal, allowing both pressure limit and flow demand to be set—ideal for load-sensing and energy-efficient systems.
Yes, selected A4VSO250 variants with through-drive (through shaft) can be tandem-mounted with another A4VSO or a gear pump to build multi-circuit hydraulic power units.
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