Rexroth Pump
Rexroth Axial Piston Variable Pump A4VG
  • Description
  • Technique Feature
  • Specification
  • Applied Range

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Data Sheet of A4VG Series 32

Data Sheet of A4VG Series 40

REXROTH Type Code of A4VG Series

 

 

 

Axial piston variable pump, A4VG Series 32 

Hydraulic fluids
The A4VG variable pump is designed for operation with HLP mineral oil according to DIN 51524.
Application instructions and requirements for hydraulic fluids should be taken from the following data sheets before the start of project planning:
- 90220: Hydraulic fluids based on mineral oils and related hydrocarbons
- 90221: Environmentally acceptable hydraulic fluids
- 90222: Fire-resistant, water-free hydraulic fluids (HFDR/HFDU)
- 90225: Axial piston units for operation with water-free and water-containing fre-resistant hydraulic fluids (HFDR, HFDU, HFAE, HFAS, HFB, HFC).

Notes on selection of hydraulic fluid
The hydraulic fluid should be selected such that the operating viscosity in the operating temperature range is within the optimum range (νopt see selection diagram).

Notice
At no point of the component may the temperature be higher than 115 °C. The temperature difference specifed in the table is to be taken into account when determining the viscosity in the bearing. Please contact us if the above conditions cannot be met due to extreme operating parameters. 

Filtration of the hydraulic fluid
Finer fltration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.
A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406.
Depending on the system and the application, for the A4VG, we recommend: Filter elements β20 ≥ 100.
At very high hydraulic fluid temperatures (90 °C to maximum 110 °C, measured at port T), a cleanliness level of at least 19/17/14 according to ISO 4406 is necessary. 

 

Axial piston variable pump, A4VG Series 40 

- High-pressure pump for applications in a closed circuit up to 500 bar
- Size 110...280
- Nominal pressure 450 bar
- Maximum pressure 500 bar
- Closed circuit 

Hydraulic fluid
The axial piston unit is designed for operation with HLP
mineral oil according to DIN 51524.
Application instructions and requirements for hydraulic
fluid selection, behavior during operation as well as disposal and environmental protection should be taken from
the following data sheets before the start of project planning:
- 90220: Hydraulic fluids based on mineral oils and related
hydrocarbons
- 90221: Environmentally acceptable hydraulic fluids
- 90222: Fire-resistant, water-free hydraulic fluids (HFDR/HFDU)
- 90225: Limited technical data for operation with waterfree and water-containing fre-resistant hydraulic fluids
- (HFDR, HFDU, HFAE, HFAS, HFB, HFC). 
A4VG250

Notes on selection of hydraulic fluid
The hydraulic fluid should be selected so that the operating viscosity in the operating temperature range is within the optimum range (νopt see selection diagr
am). A4VG180 EP

Filtration of the hydraulic fluid
Finer fltration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.
A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406.
Depending on the system and the application, for the A4VG, we recommend: Filter elements β20 ≥ 100.
At very high hydraulic fluid temperatures (90 °C to maximum 110 °C, measured at port T), a cleanliness level of at least 19/17/14 according to ISO 4406 is necessary. 
A4VG125 HD 

A4VG series 32 Technical data

Size 28 40 56 71 90 125
Displacement   Vg max cm³ 28 40 56 71 90 125
geometric, per revolution
Nominal pressure   pnom bar 400 400 400 400 400 400
Maximum pressure   pmax bar 450 450 450 450 450 450
Maximum speed at Vg max nnom rpm 4250 4000 3600 3300 3050 2850
Intermittent 1) nmax rpm 5000 5000 4500 4100 3800 3450
Flow at Vg max and nnom qV nom l/min 119 160 202 234 275 356
Power at qV nom and Δpnom 2) P kW 79 107 134 156 183 238
Torque at Vg max and Δpnom M Nm 178 255 357 452 573 796
Weight (approx.)   m kg 29 31 38 50 60 80
1) At Δp = 70 … 150 bar or Δp < 300 bar and t < 0.1 s
2) Δpnom = 400 bar
 
 
 
 
A4VG series 40 Technical data
 
Size 110 145 175 210 280 110 145 175
Version Standard High speed
Nominal pressure   pnom bar 450 450 450 450 450 450 450 450
Maximum pressure   pmax bar 500 500 500 500 500 500 500 500
Maximum speed at Vg max nnom rpm 3150 2850 2650 2500 2400 3400 3050 3000
Intermittent 1) nmax rpm 3350 3000 2800 2650 2550 3600 3200 3100
Flow at Vg max and nnom qV nom l/min 348 414 465 527 673 375 443 526
Power at qV nom 

A4VG series 32 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 series 40 Features

- High power density due to high pressure level

- 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

- High total efficiency

- Large variety of controls

- Swashplate design

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