Rexroth A4VG Axial Piston Variable Pump
The Bosch Rexroth A4VG series axial piston pump is a high-pressure pump suitable for closed circuit applications up to 500 bar. It has a high power density and is designed with an integrated auxiliary pump for boost and pilot oil supply.
Rexroth Axial Piston Variable Pump A4VG Description：
1）Axial piston variable pump A4VG series 32
– 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
2）Axial piston variable pump A4VG series 40
– 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
3）Axial piston variable pump A4VTG series 33
– 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
A4VG pump main control
According to the different types of control valves on the pump, the A4VG pump has various control modes. The following are common control methods:
– HW manual control: The pump displacement is proportional to the angle of the control valve handle.
– EP Electric Proportional Control: The pump displacement is proportional to the current signal of the proportional solenoid.
-HD hydraulic control type: Pilot-controlled hydraulic control, the displacement of the pump is proportional to the pilot pressure.
Rexroth A4VG series 32 ，series 33 Features：
– Integrated boost pump for boost and pilot oil supply
– Flow direction changes smoothly when the swashplate is moved through the neutral position
– High-pressure relief valves with integrated boost function
– With adjustable pressure cut-off as standard
– Boost-pressure relief valve
– Through drive for mounting of further pumps up to same nominal size
– Large variety of controls
– Swashplate design
A4VG Application ：
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.
- 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
- 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.;
- 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,
OACAER’S supply is equal to your demand. we 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…
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