A4VSO125LR2F/30R Rexroth Axial Piston Variable Pump 350bar

Product Overview

The A4VSO125LR2F/30R-PPB13N00 is a precision-engineered interchangeable axial piston variable-displacement pump fully compatible with the Bosch Rexroth A4VSO Series. Designed in swashplate configuration for open-circuit high-pressure industrial applications, flow is proportional to drive speed and displacement and infinitely variable. This unit features LR2F power control (hyperbolic characteristic) combined with flow control for high power density, low noise and long service life. It delivers 100% form-fit-function interchangeability with original Rexroth models. Every pump undergoes rigorous 100% simulated operating-condition testing to guarantee volumetric efficiency, suction performance and reliability under continuous rated conditions.

Technical Specifications 

• Model: A4VSO125LR2F/30R-PPB13N00 (Series 30)
• Geometric displacement (Vg max): 125 cm³/rev
• Nominal (continuous) pressure: 350 bar
• Peak pressure: 400 bar
• Maximum speed at Vg max: 1800 rpm
• Flow at nnom and Vg max: approx. 225 L/min
• Power at nnom and Δp = 350 bar: approx. 131 kW
• Torque at Vg max and Δp = 350 bar: approx. 696 Nm
• Control type: LR2F (power control with hyperbolic characteristic + flow control)
• Direction of rotation: Clockwise (R, viewed from shaft end)
• Mounting flange: ISO 3019-2 or corresponding
• Housing material: High-strength cast iron
• Approximate weight: 88 kg
• Circuit type: Open circuit
• Series: Series 30

Key Technical Advantages

1. High power-density swashplate design with low noise characteristics enables infinitely variable displacement and favorable power-to-weight ratio, ideal for industrial environments.
2. LR2F power-and-flow control maintains constant drive power via hyperbolic characteristic while providing precise flow matching, improving energy efficiency and protecting the prime mover.
3. Excellent suction performance and short control response times, supported by optimized flow paths and pre-compression volume, ensure reliable self-priming and reduced pressure pulsation.
4. Robust cast-iron housing combined with heavy-duty bearings and precision rotating group delivers high rigidity, vibration resistance and extended service life under continuous 350 bar duty.
5. Full dimensional and functional interchangeability with original Rexroth A4VSO units, including mounting, shaft, ports and controls, plus through-drive capability, allows true drop-in replacement and multi-pump configurations without system modifications.

Application Areas

Suitable for open-circuit high-pressure industrial hydraulic systems including hydraulic presses, injection molding machines, die-casting machines, metal-forming equipment, test stands, marine hydraulics, heavy machine tools and any application requiring stable high-pressure variable flow with power control.

Expert Maintenance Tips

Ensure precise shaft alignment and adequate suction-line conditions during installation to prevent cavitation (maintain absolute pressure at suction port ≥ 0.8 bar). Confirm case drain is correctly routed to the reservoir within allowable back pressure before start-up. Use specified mineral-based hydraulic oil and maintain recommended cleanliness levels with regular filter changes. Set power-control and flow values according to the system’s maximum working pressure and available drive power. When using through-drive, observe torque limits of the secondary pump. Periodically inspect the port plate, pistons and bearings; replace serviceable wear components as needed to restore performance. Avoid prolonged over-pressure or overspeed operation.