Variable axial piston pump Bosch Rexroth A10VSO45DRG/31R-VPA12N00

The A10VSO45DRG/31R-VPA12N00 pump from the Bosch Rexroth A10VSO series is a variable displacement axial piston pump of swashplate design for open circuits. It is one of the most widely used industrial piston pumps, and its controller matches flow and pressure to what the circuit needs.

Key specifications of A10VSO45DRG/31R-VPA12N00

• Displacement: 45 cc/rev
• Working pressure: 280 bar
• Maximum pressure: 350 bar
• Rotation: Clockwise (CW)
• Displacement type: Variable
• Piston arrangement: Axial

These values come from the manufacturer's published data. The full list is in the specifications tab.

Applications

• Hydraulic presses
• Plastic injection machines
• Industrial power units
• Steel and rolling lines

How it works

In an axial piston pump, the pistons sit in a rotating cylinder block and the angle of the swashplate sets their stroke. On variable displacement models a controller changes that angle, so the pump delivers only what the circuit needs. The result is high efficiency and less heat in high-pressure circuits.

Reading the code

About the brand

Bosch Rexroth is one of the largest German makers of industrial and mobile hydraulics, and its pumps, valves and motion control systems are common in machine building and heavy industry.

Selection and maintenance

A piston pump is more sensitive to contaminated oil than a gear pump, so keep the oil cleanliness level given in the datasheet. Fill the pump case with oil before start-up and keep the case drain line separate and free of pressure. Rising drain leakage, pressure swings and a hot pump are signs of internal wear.

If this unit is already in service and has a fault, see hydraulic pump repair.

FAQ