A4VG Piston Pump

Axial piston variable pump A4VG 

-Sizes 28 to 250

-Nominal pressure 400 bar

-Maximum pressure 450 bar

-Closed circuit

Features

Variable axial piston pump of swash plate design for hydrostatic drives in closed circuit.

– The flow is proportional to the drive speed and displacement.

– The flow can be infinitely varied by adjusting the swash plate angle.

– Flow direction changes smoothly when the swash plate is moved through the neutral position.

– A wide range of highly adaptable control devices with different control and regulating functions, 

for all important applications.

– Two pressure-relief valves are provided on the high-pressure side to protect the hydrostatic transmission 

(pump and motor) from overload.

– The high-pressure relief valves also function as boost valves.

– The integrated boost pump acts as a feed pump and control pressure supply.

– The maximum boost pressure is limited by a built-in low pressure relief valve.

– As standard with integrated pressure cut-off