Rexroth Piston Pump Specification Series

1. A10VSO Series (Variable Displacement Axial Piston Pump)

• Product Type: Variable displacement axial piston pump, swash plate design, open circuit for hydrostatic drives
• Displacement Range: 18 – 140 cm³/r (Models: A10VSO18, A10VSO28, A10VSO45, A10VSO71, A10VSO100, A10VSO140)
• Operating Pressure: Maximum 280 bar (working pressure), suitable for medium pressure applications
• Rotational Speed: Maximum 3300 rpm (A10VSO18) to 1800 rpm (A10VSO140); 1450 – 1800 rpm for common working conditions
• Flow Rate: Proportional to drive speed and displacement; maximum 59.4 L/min (A10VSO18) to 252 L/min (A10VSO140) at maximum rotational speed
• Key Features: Low operating noise, long service life, short control response time, excellent suction characteristics, 2 drain ports; optional through drive; sealing material is FKM (standard)
• Control Devices: Pressure controller (DR), pressure flow controller (DFR), power controller (DRS), etc.

2. A4VSO Series (Variable Displacement Axial Piston Pump)

• Product Type: Variable displacement axial piston pump, swash plate design, open circuit; available in series 1x and 30
• Displacement Range: 40 – 1000 cm³/r (Common models: 40, 71, 125, 180, 250, 355, 500, 750, 1000)
• Operating Pressure: Nominal pressure 350 – 380 bar; peak pressure 400 – 420 bar (for selected control devices)
• Rotational Speed: Maximum 2600 rpm (A4VSO40) to 1500 rpm (A4VSO355, A4VSO500)
• Flow Rate: Maximum 104 L/min (A4VSO40) to 532 L/min (A4VSO355) at maximum rotational speed; proportional to drive speed and displacement
• Key Features: Long bearing life, wide range of controllers and actuators; through shaft structure available for combined pumps; suitable for mineral oil and HFC fluid (special version); excellent suction characteristics, low noise
• Control Modes: DR (pressure control), FR (flow control), LR (hyperbolic power control), MA (manual control), EO2 (electronic proportional control), etc.

3. A7VO Series (Variable Displacement Axial Piston Pump)

• Product Type: Variable displacement axial piston pump, bent-axis design, open circuit for hydrostatic drives
• Displacement Range: 107 cm³/r (typical model: A7VO107); other sizes available according to requirements
• Operating Pressure: Maximum 350 bar; pressure controller setting up to 350 bar
• Rotational Speed: Maximum 2150 rpm; clockwise rotation (viewed from shaft end)
• Flow Rate: Maximum 222 L/min; minimum 0 L/min, steplessly adjustable by adjusting the bent axis
• Key Features: Robust structure, long service life, mature rotary group technology; sealing material is NBR, WDR-FKM (standard up to NG 160); mounting flange is 4-hole ISO 3019-2

4. A8VO Series (Variable Displacement Axial Piston Pump)

• Product Type: Variable double pump, axial piston, bent-axis design, open circuit; installed on diesel engine flywheel housing
• Displacement Range: 55, 80, 107, 140, 200 cm³/r
• Operating Pressure: Nominal pressure 350 bar; peak pressure 400 bar
• Rotational Speed: Maximum 2500 – 1950 rpm (depending on size)
• Key Features: Integrated auxiliary pump with pressure relief valve; individual power control for each rotary group; excellent power-to-weight ratio; compatible with hydraulic and electrical control (proportional solenoid); operating temperature range -40 °C to +115 °C

5. A10VO Series (Variable Displacement Axial Piston Pump)

• Product Type: Variable displacement axial piston pump, swash plate design, open circuit for hydrostatic drives; suitable for high-speed operation
• Key Features: Hydrostatically relieved swashplate bearing, low operating noise, high functional reliability; flow is proportional to drive speed and displacement, continuously adjustable with closed-loop control
• Application: Suitable for high-demand industrial and mobile hydraulic systems requiring high speed and stability.

General Notes

• All series are compatible with mineral oil as the standard hydraulic fluid; special versions are available for HFC, HFA and HFB fluids (with corresponding sealing materials).
• Mounting flanges and shaft ends comply with international standards (ISO 3019-1/2, SAE) for easy installation and replacement.
• Specific parameters (such as weight, port size, control accuracy) may vary by model; refer to the official data sheet for details (SKU and part number available for each model).