Rexroth A4VG, parameters and image features of the Rexroth piston pump A4VG

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Pneumag A4VG series piston pumps – A4VG high-pressure piston pump series: Displacement ranges from 28 to 250; typical pressure is 400 bar (40 Mpa); peak pressure is 450 bar (45 Mpa). Technical specifications: Numerical values (theoretical values, without considering ηmh and ηv)； (The values are rounded.) 1) Maximum allowable speed: – Power consumption is half of the angular power (for example, when Vg man and PN/2). 2) Maximum speed under high-load conditions: – During high-speed no-load operation; – During engine overspeed: △p = 70…150 bar and Vg max; – Under reverse peak load conditions: △p < 300 bar and t < 5 seconds. Typical applications: concrete pump trucks, heavy-duty hydraulic flatbed trucks, hydraulic pump stations. Features of Rexroth A4VG: swashplate-type axial piston variable pump, used for closed-loop hydrostatic transmission. ◆ The 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 filler valve ； ◆The built-in auxiliary pump is used as an oil makeup pump and a control pump ； ◆The maximum refueling pressure is limited by a built-in refueling relief valve ； ◆The entire series is equipped with a built-in pressure cut-off valve ； Learn more: Rexroth piston pumps