Rexroth A4VG piston pump is a swash plate axial piston variable displacement pump. This type of pump is suitable for static hydraulic transmission closed circuits, with flow rate proportional to driving speed and displacement, and can be continuously variable. It is driven in both directions and can be connected in series with an auxiliary pump. The A4VG series pump is a commonly used pump in static hydraulic transmission, with a complex structure and integration of multiple hydraulic control valves to avoid overloading. Different control methods can be configured according to customer needs, with high automation and the ability to achieve remote control operation. As a power component of the static hydraulic transmission closed system, it is the first choice plunger pump for construction and maintenance machinery, port machinery, and concrete pumping machines in the world today. HEASH supply Rexroth piston pump A4VG series as A4VG 28, A4VG 40, A4VG 56, A4VG 71, A4VG 90, A4VG 110, A4VG 125, A4VG 140, A4VG 145, A4VG 175, A4VG 180, A4VG 250, A4VG 280...

Rexroth Pump A4VG series 32 Features

- High pressure pump for applications in closed circuits

- Size 28 … 125, such as A4VG 28 NVD**/32R, A4VG 40 HD3D**/32R, A4VG 56 HWD**/32R, A4VG 71 DA1D**/32R, A4VG 90 EZ1D**/32R, A4VG 125 EP4D**/32R.

- Nominal pressure 400 bar

- Maximum pressure 450 bar

Rexroth Pump A4VG series 40 Features

- High pressure pump for applications in closed circuits up to 500 bar

- Size 110 … 280, A4VG 110 DA**/40R, A4VG 125 HW**/40R, A4VG 145 EP**/40R, A4VG 175 EZ1**/40R, A4VG 210 EZ2**/40R, A4VG 280 EP4**/40R.

- Nominal pressure 450 bar

- Maximum pressure 500 bar

Rexroth Pump A4VTG series 33 Features

- High pressure pump for the drum drive in mobile concrete mixers

- Size 71 … 90, such as A4VTG 071 EP3**/33R, A4VTG 090 EP4**/33R.

- Nominal pressure 400 bar

- Maximum pressure 450 bar

- Closed circuit

How does the A4VG pump work?

For the axial piston pump, regarding its working principle, we can think of it as several syringes working at the same time. Each plunger and the cylinder cooperate to form a syringe. The number of syringes depends on the number of plungers. . At the same time, these "syringes" have oil pressure and pressure. The working principle of the A4VG pump is also the same, but as a closed variable displacement piston pump, its swash plate can cross the zero position to achieve the change of the flow direction, which is a bit complicated to implement.

- The charge pump supplies the control oil. The control valve controls the displacement of the variable piston. The variable piston drives the swash plate to change the swing angle to achieve the change of the pump displacement.

- The displacement of the pump is proportional to the difference in the control oil pressure between the two pistons of the variable piston;

- Control oil size and control signals, such as electricity, liquid, and manual signals;

- The shut-off valve on the pump limits the pressure at which the pump operates;

- Safety valve on the pump to achieve system safety protection;

Control form of Rexroth A4VG pump

According to the different forms of control valves on the pump, A4VG pumps have multiple control forms. The following are common control methods:

-HW manual control: The pump displacement changes proportionally to the angle of the control valve handle.

-EP proportional control: The pump displacement changes proportionally to the current signal of the proportional solenoid.

-HD hydraulic control form: hydraulic pilot control, where the pump displacement changes proportionally to the pilot pressure.

The A4VG pump is mainly used for closed loop hydrostatic transmission, with a complex structure and multiple hydraulic control valves. Different control methods can be configured according to the actual needs of end users, with a high degree of automation and the ability to achieve remote control. As a power component of a static hydraulic transmission closed system, A4VG is currently the preferred plunger pump for construction and maintenance machinery, port machinery, and more in various regions.

Application of Rexroth A4VG on Hydraulic System.

The A4VG pump is mainly used for closed circuit hydrostatic transmissions and has a complex structure with a variety of hydraulic control valves. Different control methods can be configured according to the actual needs of the end user, with a high degree of automation and remote control. As a power element of the hydrostatic transmission system, A4VG is the preferred plunger pump for building maintenance machinery and port machinery.

1. Hydraulic driving system for construction machinery, such as hydraulic system for pavers, hydraulic walking system for full-hydraulic vibratory roller, walking system for full-hydraulic corn harvester, walking system for coal support carrier truck, traveling system for beam transporter

2. The hydraulic driving system for special vehicles, such as the traveling system of aircraft tractors, the walking system of high-speed rail grinding cars, etc.;

3. The rotary hydraulic system of construction machinery vehicles, the rotary hydraulic system of mining excavators, the rotary hydraulic system of cranes, etc.

4. Hydraulic systems for construction machinery vehicles, such as excavators, graders, bulldozers, pumping hydraulic systems for concrete pump trucks, loaders, dock cranes, modular pallet trucks, etc.

HEASH TECH is pleased to be your trustworthy partner in hydraulics and electronics from Europe. Welcome enquiry us if you demand Rexroth valve A4VG or any other Rexroth valves, pumps, motors, as: Rexroth Prop./Servo Valves: 4WRAE, 4WRZE, 4WREE, 4WRPEH, 4WRKE, 4WRDE, 4WRTE, DBEME, 4WS2EM, 4WSE3E, 4WRSEH, 3DREME, 3DREPE, VT-DFPE, M-3SED, M-3SEW, STW, 2WFCE, 2WRCE, SCA, ZDC, DBW, DBWA, DBA, 3FRE, 2FRW, 4WRH, 3DRG, LC2A, Z4WEH, 4WRLE,... Rexroth Pump/Motor: A4VSO, A11VLO, SYDFEE, P A4VSG, A4CSG, A7VO, A7VK, A17FO, A4VG, PV7, A15VO, A6VM, A10VSO, A20VO, A2FM, A2FO, A4FM, A4FO,... Hengst filter/element=Rexroth filter/element MNR as R928...

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