A10VSO Technical Specifications: Pressure, Displacement and Performance Data

When selecting or replacing an A10VSO axial piston pump, the technical data sheet is your first reference. This guide summarizes the key specifications across the Series 31 platform so you can quickly compare sizes and confirm a replacement matches your original unit.

Operating Parameters

Nominal pressure: 280 bar (Series 31 industrial model)
Peak pressure: 350 bar
Mode of operation: variable displacement pump, open circuit
Hydraulic fluid: mineral oil; HFA, HFB and HFC fluids supported for special variants

Available Sizes and Displacements

The Series 31 platform covers nominal displacements from 18 to 140 cm³/rev. The most common industrial sizes are 28, 45, 71, 100 and 140, each matched to a specific power and flow requirement.

Speed and Flow Considerations

Maximum drive speed depends on the size and operating pressure. At higher pressures, the permissible speed range narrows. Flow output is proportional to drive speed and displacement, and can be varied steplessly through the swashplate.

Mounting and Connections

ISO two-hole mounting flange
SAE metric flange connections
Two case drain connections
Optional through drive for tandem pump arrangements

Specifications vary by size and revision. Always consult the original nameplate and data sheet before ordering a replacement pump.