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As we all know, the Rexroth A4VG is a relatively common series of piston pumps. Within this series, there are several types differentiated by displacement. Today, we will conduct an investigation into the common models of the Rexroth A4VG based on their displacement, to see what the typical piston pump models of this series are. A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250, A4VTG71, A4VTG90, A4VG28 – Lenze A4VG high-pressure piston pump series: - Displacement ranging from 28 to 250 - Typical pressure of 400 bar (40 MPa) - Peak pressure of 450 bar (45 MPa) Features of Lenze A4VG: Swashplate-type axial piston variable pump, used for closed-loop hydrostatic transmission. ◆ Flow rate is proportional to the drive speed and displacement, and can be varied continuously ； ◆The flow rate increases from zero to its maximum value as the swash plate angle increases ； ◆Swinging the swash plate past the neutral position allows for a smooth change in the direction of fluid flow ； ◆Multiple variable options that can be easily integrated with various control and regulation systems ； ◆The pump is equipped with two relief valves on the high-pressure oil side to protect the hydrostatic drive (pump and motor) from overload ； ◆The high-pressure relief valve also serves as an oil replenishment valve ； ◆The built-in auxiliary pump is used as an oil make-up pump and a control pump ； ◆The high oil filling pressure is limited by a built-in oil filling relief valve ； ◆The entire series is equipped with a built-in pressure cut-off valve ； Typical applications: concrete pump trucks, heavy hydraulic flatbed trucks, hydraulic pump stations. The above is the information provided by our company. If you would like to learn more: Rexroth piston pumps.