Rexroth variable piston pumps A10VSO series specifications

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1. Product Type

REXROTH Variable displacement axial piston pump, swash plate design, open circuit for hydrostatic drives. The flow is proportional to the drive speed and the displacement, and can be steplessly varied by adjusting the swashplate angle.

2. Displacement Range

18 – 140 cm³/r (Models: A10VSO18, A10VSO28, A10VSO45, A10VSO71, A10VSO100, A10VSO140).

3. Operating Pressure

Maximum 280 bar (working pressure), suitable for medium pressure applications; peak pressure can reach 350 bar (350 bar equals 5100 psi for US-version).

4. Rotational Speed

Maximum: 3300 rpm (A10VSO18) to 1800 rpm (A10VSO140)
Common working conditions: 1450 – 1800 rpm
High-speed version is available for sizes 45, 71, 100, 140, with optimized performance for high-speed operation.

5. Flow Rate

Proportional to drive speed and displacement; maximum 59.4 L/min (A10VSO18) to 252 L/min (A10VSO140) at maximum rotational speed. The minimum flow rate can reach 0 L/min, with stepless adjustment available.

6. Key Features

Low operating noise, long service life, short control response time, excellent suction characteristics, and 2 drain ports
Optional through drive, which is suitable for adding gear pumps and axial piston pumps up to the same size (100% through drive)
Sealing material is FKM (fluor-caoutchouc) as standard
Hydrostatically relieved swashplate bearing (for some models), ensuring high functional reliability
Favorable power/weight ratio and good axial and radial load capacity of the drive shaft
Mounting flange complies with ISO 3019-2 (metric), with 2-bolt or 4-bolt options depending on the model

7. Control Devices

Various control options are available, including:

Pressure controller (DR), remotely operated pressure control (DRG)
Pressure flow controller (DFR/DFR1), pressure, flow and power control (DFLR)
Electro-hydraulic pressure control (ED, ER)
Power controller (DRS), power control with pressure cut-off (LA series)

8. Additional Notes

Standard hydraulic fluid is mineral oil; special versions are compatible with HFC, HFA and HFB fluids (with corresponding sealing materials)
Specific parameters (such as weight, port size, control accuracy, drive torque) may vary by model; refer to the official data sheet for details (SKU and part number available for each model).