Rexroth A4VG56 Hydraulic Axial Piston Pump

Rexroth A4VG56 Hydraulic Axial Piston Pump

Description:

The Rexroth A4VG56 is a high‑performance variable‑displacement axial‑piston hydraulic pump designed for demanding hydraulic systems in mobile machinery, industrial equipment, and heavy-duty hydraulic applications. The “A4VG” family uses a swash‑plate design enabling infinitely variable flow and smooth direction reversal, making the A4VG56 particularly suitable for closed‑circuit hydrostatic drives.

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Features of Rexroth A4VG56 Hydraulic Axial Piston Pump

  • Variable displacement & flow control — Flow and output adjust continuously with swash‑plate angle; allows fine control based on load and speed.

  • Bidirectional operation & smooth reversal — Flow direction changes smoothly when the swash‑plate moves through neutral.

  • Integrated boost/charge pump — Provides internal pilot / control fluid supply, helping maintain system pressure and support steerable control schemes.

  • High pressure & power density — Nominal 400 bar (peak 450 bar) and high flow output make it suitable for heavy‑duty applications like excavators, loaders, cranes, concrete pump trucks, etc.

  • Flexible control interface — Compatible with hydraulic, electric or mechanical control devices (various control versions like HD3, NV, DA, EP, EZ, etc.), making it adaptable to many system designs.

  • Robust design & reliability — Built for durability under high pressure, capable of continuous operation, minimizing energy losses and delivering stable, efficient performance.

 

Parameter Value (Typical / Nominal)
Displacement (Vg_max) 56 cm³/rev
Continuous flow at Vg_max ~ 202 L/min
Maximum nominal pressure 400 bar
Peak (max) pressure 450 bar
Maximum continuous shaft speed 3600 rpm
Approximate weight (pump only, without through‑drive) ~ 38 kg
Boost (charge) pump displacement (auxiliary) 11.6 cm³/rev
Control options Multiple — hydraulic control (various variants), electric control, mechanical control, etc.