BOSCH RexrothVariable Displacement Pump A4VG

Features– Variable displacement axial piston pump of swashplatedesign for hydrostatic closed circuit transmissions– Flow is proportional to drive speed and displacement and isinfinitely variable– Output flow increases with swivel angle from 0 to itsmaximum value– Swivelling the pump over centre smoothly changes thedirection of flow– Availability of a highly adaptable range of control andregulating devices– The pump is equipped with two pressure relief valves on thehigh pressure ports to protect the hydrostatic transmission(pump and motor) from overloads– These valves also function as boost inlet valves– An integral auxiliary pump serves as boost and pilot oil pump– The maximum boost pressure is limited by a built-in boostpressure relief valve– The integral pressure cut-off is standardSeries 3Sizes A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG180 A4VG250Nominal pressure 400 barPeak pressure 450 bar