Jinan Focor Machinery Co., Ltd.

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A4VTG Hydraulic pump

    Product Introduction:

    Model: A4VTG

    Closed circuit

    Series 32

    Sizes 71, 90

    Nominal pressure 5800 psi (400 bar)

    Maximum pressure 6500 psi (450 bar)

    Control device: HW, EP


  • Parameters

    Product Introduction:

    Model: A4VTG

    Closed circuit

    Series 32

    Sizes 71, 90

    Nominal pressure 5800 psi (400 bar)

    Maximum pressure 6500 psi (450 bar)

    Control device: HW, EP


Rexroth A4VTG pump

Concrete mixer hydraulic piston pump A4VTG71, A4VGT90

Description

Closed circuit

Series 32

Sizes 71, 90

Nominal pressure 5800 psi (400 bar)

Maximum pressure 6500 psi (450 bar)

Control device: (HW) Proportional control hydraulic, mechanical servo, hexagon shaft with lever to the rear.

(EP) Proportional control electric, with emergency actuation and spring return.

 

For the drum drive in mobile concrete mixers A4VTG071, A4VGT090 series.

–Variable axial piston pump of swash plate design for hydrostatic drives in closed circuit

–The flow is proportional to the drive speed and displacement.

–The flow increases as the angle of the swash plate is adjusted from zero to its maximum value.

–Flow direction changes smoothly when the swash plate is moved through the neutral position.

–Two pressure-relief valves are provided on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overload.

–The high-pressure relief valves also function as boost valves.

–The integrated boost pump acts as a feed pump and control pressure supply.

–The maximum boost pressure is limited by a built-in boost pressure-relief valve.

–Tapered shaft option for direct drive shaft yoke installation.


Table of values (theoretical values, without efficiency and tolerances; values rounded)

Rexroth A4VTG 

A4VTG71

A4VTG90

Displacement

 

Variable pump

Vg max

cm3

71

90

auxiliary pump

Vg H

cm3

18,7

25,7

Speed

 

 

 

Max. speed at Vg max

Nmax continuous

rpm

3300

3050

Limited max.

Nmax limited

rpm

3600

3300

Intermittent max.

Nmax continuous

rpm

4100

3800

minimum speed

Nmin

rpm

500

500

Flow

at Nmax Dauer and Vg max

Qmax

L/min

234

275

Power

at Nmax Dauer D p = 400 bar

Pmax

kW

156

183

Torque

at Vg max      D p = 400 bar

Tmax

Nm

451

572

(Variable pump without aux. pump)  D p = 100 bar

T

Nm

112,8

143

Moment of inertia (about drive axis)

J

kgm2

0,0072

0,0106


Details model of Rexroth A4VTG71 & Rexroth A4VTG90 pump

R902132673   A4VTG071HW100/33MLNC4C82F0000AS-0

R902069484   A4VTG90EP2/32L-NZD10N001EW-S

R902132671   A4VTG071HW100/33MRNC4C82F0000AS-0

R902071852   A4VTG71EP2/32R-NLD10F001ST-S

R902155546   A4VTG090HW100/33MRNC4C92F0000AS-0

R902072877   A4VTG90EP2/32R-NSD10F011ST-S

R902155618   A4VTG090HW100/33MRNC4C92F0000AS-0

R902072914   A4VTG71EP2/32L-NSD10F001SX-S

R902155547   A4VTG090HW100/33MLNC4C92F0000AS-0

R902074155   A4VTG71EP1/32R-NLD10F001SGT-S

R902061570   A4VTG90EZ1/32L-NSD10F071SH-S

R902074168   A4VTG71HW/32R-NSD10F011S

R902061572   A4VTG71EZ1/32L-NXD10F071SH-S

R902074373   A4VTG71EP1/32R-NSD10F001ST-S

R902061573   A4VTG71EZ1/32L-NXD10F001SH-S

R902074403   A4VTG90EP2/32R-NLD10F011ST-S

R902062961   A4VTG90EP1/32L-NZD10K021EW-S

R902074406   A4VTG90EP2/32L-NLD10F001ST-S

R902085645   A4VTG90EZ1/32L-NZD10F021SH-S

R902074408   A4VTG90EP2/32R-NSD10F011SGT-S

R902064251   A4VTG71EP2/32L-NXD10F001SH-S

R902077977   A4VTG71HW/32R-NLD10F021S-K

R902084560   A4VTG71EP2/32L-NZD10K021EP-S

R902079554   A4VTG71EP2/32L-NXD10F021SH-S

R902064721   A4VTG71EP2/32R-NLD10F001SGT-S

R902079556   A4VTG71EP1/32R-NLD10F001ST-S

R902064723   A4VTG90EP2/32R-NLD10F001SGT-S

R902079583   A4VTG90HW/32R-NSD10F001S-S

R902066191   A4VTG90HW/32L-NSD10F001S-S

R902079590   A4VTG71EP2/32L-NZD10K021EP-S

R902066730   A4VTG90EP2/32R-NLD10F011SGT-S

R902079597   A4VTG71EP2/32L-NZD10K021EP-SK

R902066731   A4VTG90EP2/32L-NLD10F011SGT-S

R902079762   A4VTG71EP2/32R-NSD10F011ST-S

R902066732   A4VTG71EP2/32L-NLD10FXX1SGT-S

R902079857   A4VTG90EP2/32L-NLD10F011ST-S

R902068067   A4VTG90EZ1/32L-NZD10F011SH-S

R902079888   A4VTG90HW/32R-NLD10F001S

R902068087   A4VTG90EZ1/32L-NSD10FXX1SH-S

R902079961   A4VTG71HW/32R-NLD10F001S

R902068090   A4VTG90EP2/32R-NLD10F001ST-S

R902081370   A4VTG90EP2/32R-NSD10F001ST-S

R902068121   A4VTG90HW/32L-NLD10F001S

R902083530   A4VTG90HW/32L-NLD10F001S

R902068451   A4VTG71EP2/32L-NSD10F001SW-S

R902083968   A4VTG71EP2/32L-NZD10K021EP-S

R902069445   A4VTG71EP2/32L-NZD10K021EW-S



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Mining Machinery 
Contact: Jack Zhang
Mobile: +86-18663742355
E-mail: 
sales@focormach.com 
Web: www.focormach.com


   



Hydraulic Products
Contact: Baker Zhang
Mobile: +86-18660165771   
E-mail:
 sales@jnfocor.com 
Web: 
www.jnfocor.com

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