A10VO100DFR1/31L Rexroth A10VO Variable Piston Pump 280bar

Product Overview

The A10VO100DFR1/31L-VSC62KC5 together with the A10VO/A10VSO series (sizes 28/45/71/74/100/140) are precision-engineered interchangeable axial piston variable-displacement pumps fully compatible with the Bosch Rexroth A10VO Series. Designed in swashplate configuration for open-circuit medium-pressure systems, flow is proportional to drive speed and displacement and infinitely variable. These units feature DFR1 pressure-and-flow control (with flushing function) for efficient load matching. A10VSO models include a volume stop. They deliver 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 

• Models: A10VO100DFR1/31L-VSC62KC5; A10VO/A10VSO 28/45/71/74/100/140 (Series 31)
• Geometric displacement (Vg max): A10VO100 – 100 cm³/rev; A10VO45 – 45 cm³/rev; A10VO71 – 71 cm³/rev
• Nominal (continuous) pressure: 280 bar
• Peak pressure: 350 bar
• Maximum speed at Vg max: A10VO100 – 2000 rpm; A10VO45 – 2600 rpm; A10VO71 – 2200 rpm
• Flow at nnom and Vg max: A10VO100 approx. 200 L/min; A10VO45 approx. 117 L/min
• Power at nnom and Δp = 280 bar: A10VO100 approx. 93 kW; A10VO45 approx. 55 kW
• Torque at Vg max and Δp = 280 bar: A10VO100 approx. 445 Nm; A10VO45 approx. 200 Nm
• Control type: DFR1 (pressure and flow control, X-T plugged with flushing function)
• Direction of rotation: Counter-clockwise (L, viewed from shaft end)
• Housing material: High-strength cast iron
• Approximate weight (without through-drive): A10VO100 – 45–50 kg; A10VO45 – 21–23.5 kg
• Circuit type: Open circuit
• Series: Series 31

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 noise-sensitive applications.
2. Integrated DFR1 pressure-and-flow control automatically adjusts displacement according to system load, reducing energy consumption and providing precise flow matching.
3. Excellent suction performance and short control response times ensure reliable self-priming and superior dynamic system behavior.
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 280 bar duty.
5. Full dimensional and functional interchangeability with original Rexroth A10VO units, including mounting, shaft, ports and controls, plus through-drive capability for same-size secondary pumps, allows true drop-in replacement without system modifications.

Application Areas

Suitable for open-circuit medium-pressure hydraulic systems including construction machinery auxiliary circuits, agricultural equipment, injection molding machines, die-casting machines, machine-tool power units, material-handling equipment and any application requiring stable medium-pressure variable flow with combined pressure/flow 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 DFR1 pressure and flow values according to the system’s maximum working pressure and flow requirements. 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.