Rexroth A4vg 28/40/56/71/90/125/180/250 Axial Piston Pumps

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Jinan Focor Machinery Co., Ltd.

VIP   Audited Supplier 8 years
Profile Certified by SGS/BV
A4VG
GS, CE, ISO9001
Other
Adjustable
Iron Casting
Other
High Speed
Plunger Type
A4vg56
China
Construction Machinery
Customized
Hydraulic Pump
FOCOR
Wooden Case for Export
piston
China
8413606090
Product Description
 

Rexroth Hydraulic pump  A4VTG71 for Concrete mixer

Product Description

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.                              

 
Product Parameters

Technical Data 

Table of values (theoretical values, without efficiency and tolerances; values rounded)
Rexroth A4VTG A4VTG71A4VTG90
Displacement
 
Variable pumpVg maxcm37190
auxiliary pumpVg Hcm318,725,7
Speed
 
 
 
Max. speed at Vg maxNmax continuousrpm33003050
Limited max.Nmax limitedrpm36003300
Intermittent max.Nmax continuousrpm41003800
minimum speedNminrpm500500
Flowat Nmax Dauer and Vg maxQmaxL/min234275
Powerat Nmax Dauer D p = 400 barPmaxkW156183
Torqueat Vg max      D p = 400 barTmaxNm451572
(Variable pump without aux. pump)  D p = 100 barTNm112,8143
Moment of inertia (about drive axis)Jkgm20,00720,0106
 
Dimensions

Application

Packaging & Shipping

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