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Rexroth A7V Variable Displacement pump

Date2014/06/16 15:03:36 Views: 4,004 次
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Variable displacement pump, axial piston bent axis design, for hydrostatic transmissions in open circuits.
The flow is proportional to the drive speed and the displacement and is steplessly variable at constant drive speed.
Comprehensive program of control devices for every control and regulating function.
Simplified high performance rotary group with enhanced technical data and well-proven spherical control area.

Robust roller bearings for high loads.
Hydrostatic unloading of bearings possible for continuous.
pressures up to 400 bar.
Operation on both mineral and fire-resistant fluids.
Improved port plate design and compact construction reduces noise level by 5 dBA

 

A7V
55
LV
2.0
L
Z
F
O
O
1
2
3
4
5
6
7
8
9

1= Rexroth Axial piston variable displacement pump
2= displacement size: Vgmin.- Vgmax. ml/rev.
         0-20.5            20 (code)
         8.1-28.1         28
         0-40.1            40
        15.8-54.8        55
         0-58               58
         23.1-80          80
         0-78               78
        30.8-107         107
        0-117              117
        46.2-160         160
        0-250              250
        0-355              355
        0-500              500
3= Control devices
       Constant horsepower control        LV
       Constant pressure control             DR
       Electric control EL
       (with proportional valve)
       Hydraulic control pressure related    HD
       Manual control (with handwheel)       MA
       Brake control                                   SC
       Numerical control                           NC

4= Series: 2.0 and 5.1 
5= Direction of Rotation
        Right (clockwise)            R
        Left (anti-clockwise)        L
        (viewed on shaft end)
6= Shaft end
       Splined shaft DIN 5480 Z
       Splined shaft GB3478.1-83             S
       Parallel keyed shaft GB1096-79     P
7= Pipe connections
       pressure and suction ports       F
       SAE-flanges, on side
       pressure and suction ports       G
       thread connection
8= None                                           O
9= Auxiliary equipment
       None                                           O
       With pressure cut-off                D
       built-on for LV, EL and             HD
       Constant pressure control      F
       remote controlled
       ( order sequence valve and subplate separately)
 

Ordering sample: A7V55-LV-2.0-L-Z-F-OO
Axial piston variable displacement pump A7V, series55,
with constant horsepower control, series 2.0
anti-clockwise rotation, splined shaft SAE side flange
connections, without auxiliary equipment.

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