After-sales Service: | Have |
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Warranty: | One Year |
Structure: | Axial Plunger Pump |
Cylinder Number: | Single Cylinder |
Drive Mode: | Hydraulic Driven Reciprocating Pump |
Pump Shaft Position: | Horizontal |
Customization: |
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Rexroth A8VO120 A8VO140 A8VO160 A8VO200 A8VO107 Variable Hydraulic Plunger Pump For Rig
Hydraulic piston double pump A8VO55, A8VO80, A8VO107, A8VO140, A8VO200
Description
Open circuit
Series 61 / 63
Control devices: LAOH2, LAOK, LAOKS, LAOKH1, LAOKH2, LAOKH3, LA1H2, LA1S, LA1K, LA1KS, EP, LA1KH1, etc.
Nominal pressure 350 bars. Peak pressure 400 bars
- Variable double pump A8VO with two axial tapered piston rotary groups of bent-axis design for hydrostatic drives in open circuits
- The flow is proportional to the input speed and to the displacement, and is infinitely variable from qV max to qV min = 0
- The pump is suitable for direct mounting on the flywheel case in diesel engines
- One common suction port for auxiliary pump and both circuits
- A wide range of control instruments is available for different control and regulating functions
- Individual power controller
- Integrated auxiliary pump with pressure-relief valve, optionally with additional pressure-reduction valve
- Power take-off for mounting axial piston and gear pumps
- Excellent power to weight ratio
- Long service life
Product Introduction:
Model: A8VO
Open circuit
Series 61 / 63
Control devices: LAOH2, LAOK, LAOKS, LAOKH1, LAOKH2, LAOKH3, LA1H2, LA1S, LA1K, LA1KS, EP, LA1KH1, etc.
Nominal pressure 350 bars. Peak pressure 400 bars
Technical Data
Table of values (theoretical values, without efficiency and tolerances; values rounded)
Size |
A8VO55 |
A8VO80 |
A8VO107 |
A8VO140 |
A8VO200 |
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Displacement |
Vg max |
cm3 |
2 x 54.8 |
2 x 80 |
2 x 107 |
2 x 140 |
2 x 200 |
Vg min |
cm3 |
0 |
0 |
0 |
0 |
0 |
|
Gear ratio i = ninput/nrotary groups |
1 |
1 |
1 |
1 |
1 |
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Input speed at Vg max 1) |
nmax 1 |
rpm |
2500 |
2240 |
2150 |
2100 |
1950 |
at Vg ≤ Vg max2) |
nmax |
rpm |
3000 |
2750 |
2450 |
2450 |
2250 |
Flow at nmax and Vg max |
qv max |
L/min |
2 x 137 |
2 x 179 |
2 x 230 |
2 x 294 |
2 x 390 |
Power at nmax, Vgmax and Dp=350 bar |
Pmax |
kW |
160 |
209 |
268 |
294 3) |
325 3) |
Input torque |
Tmax |
Nm |
611 |
891 |
1192 |
1337 3) |
1592 3) |
Rotary stiffness (single rotary group)5) |
cTW |
Nm/rad |
11213 |
17985 |
25565 |
41408 |
39505 |
cTW |
Nm/rad |
41442 |
67666 |
89381 |
146677 |
156876 |
|
Moment of inertia for rotary group |
JTW |
kgm2 |
0.0161 |
0.0209 |
0.0345 |
0.0581 |
0.0849 |
without power take-off (PTO) |
JTW |
kgm2 |
0.0126 |
0.0173 |
0.0288 |
0.05 |
0.075 |
Angular acceleration (single rotary group)5) |
a |
rad/s2 |
25800 |
21800 |
17100 |
7500 |
11000 |
Mass approx. |
m |
kg |
82 |
90 |
116 |
146 |
180 |
Variation: with integrated auxiliary pump, F00, F.. 4) |
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Displacement with integrated auxiliary pump |
Vg max |
cm3 |
8.6 |
8.6 |
8.6 (10.7) |
10.7 |
11 (19)4) |
Effective displacement |
Vg max/eff |
cm3 |
9.7 |
9.7 |
11 (13.7) |
12.7 |
13.6 (23.6) |
Gear ratio i = ninput/naux. pump |
0.887 |
0.887 |
0.78 |
0.843 |
0.804 |
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Variation: with power take-offs, K.., F. |
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Max. torque at PTO |
Tmax |
Nm |
250 |
350 |
380 |
450 |
650 |
Gear ratio i = ninput/nPTO |
1 |
1 |
1 |
1 |
0.804 |
Hydraulic fluid
Before starting project planning, please refer to our data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids) and RE 90223 (HF hydraulic fluids) for detailed information regarding the choice of hydraulic fluids and application conditions.
The A8VO variable double pump is not suitable for operation with HFA. If HFB, HFC and HFD or environmentally acceptable hydraulic fluids are being used, the limitations regarding technical data and seals mentioned in RE 90221 and RE 90223 must be observed.
Details regarding the choice of hydraulic fluid
The correct choice of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature, in an open circuit the tank temperature. The hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range (νopt.) - The shaded area of the selection diagram. We recommended that the higher viscosity class be selected in each case. Example: At an ambient temperature of X°C, an operating temperature of 60°C is set. In the optimum viscosity range (νopt., shaded area) this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68. Note: The case drain temperature, which is affected by pressure and speed, is always higher than the tank temperature. At no point in the system may the temperature be higher than 115°C. If the above conditions cannot be maintained due to extreme operating parameters, please contact us.
Case drain fluid
The case drain chamber is connected to the suction and gear chambers. A case drain line to the tank is not required. Note the special feature of size 200 for flushing fluid.
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