JiNan，ShanDong-
E-mail
sales@focormach.com
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Phone
86-531-88802487
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Address
410, Fenghuang Road, Gaoxin District, Jinan City, Shandong Province, China.
Product Categories
Jinan Focor Machinery Co.,LtdFree·1YRS
A4VG Hydraulic Pump
NegotiableUpdate on October 12
- Model
- Nature of the Manufacturer
- Manufacturer
- Product Category
- Hydraulic Pump
- Place of Origin
- City, Province
Overview
A4VG Hydraulic Pump
Product Details
Rexroth A4VG pump
Hydraulic variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250
Description
Series 32
Nominal pressure 400 bar
Peak pressure 450
Control device: NV, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, EZ2
The A4VG axial piston variable pump in swash plate design for hydrostatic closed circuit transmissions
– Flow is proportional to drive speed and displacement and is infinitely variable
– Output flow increases with the swivel angle of the swash plate from 0 to its maximum value
– Flow direction changes smoothly when the swash plate is moved through the neutral position
– A wide range of highly adaptable control devices is available for different control and regulating functions
– The pump is equipped with two pressure-relief valves 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 and control oil pump
– The maximum boost pressure is limited by a built-in boost pressure relief valve
– The integral pressure cut-off is standard
Product Introduction:
Model: A2F
Series 32
Nominal pressure 400 bar
Peak pressure 450
Control device: NV, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, EZ2
Technical Data
Table of values (theoretical values, without efficiency and tolerances; values rounded)
Size | A4VG40 | A4VG56 | A4VG71 | A4VG90 | A4VG125 | A4VG180 | A4VG250 | ||
Displacement variable pump | Vg max | cm3 | 40 | 56 | 71 | 90 | 125 | 180 | 250 |
boost pump (20 bar) | Vg Sp | cm3 | 8.6 | 11.6 | 19.6 | 19.6 | 28.3 | 39.8 | 52.5 |
Speed maximum Vg max | conti. | rpm | 4000 | 3600 | 3300 | 3050 | 2850 | 2500 | 2400 |
limited maximum | limited | rpm | 4200 | 3900 | 3600 | 3300 | 3250 | 2900 | 2600 |
intermittent max. | Min. | rpm | 5000 | 4500 | 4100 | 3800 | 3450 | 3000 | 2700 |
nmin | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | |
Flow continuous and Vg max | l/min | 160 | 202 | 234 | 275 | 356 | 450 | 600 | |
Power | 400 bar | kW | 107 | 134 | 156 | 183 | 237 | 300 | 400 |
Torque at Vg max | 400 bar | Nm | 255 | 356 | 451 | 572 | 795 | 1144 | 1590 |
100 bar | Nm | 63.5 | 89 | 112.8 | 143 | 198.8 | 286 | 398 | |
Moment of inertia | JGR | kgm2 | 0.0038 | 0.0066 | 0.0097 | 0.0149 | 0.0232 | 0.0444 | 0.0983 |
Angular acceleration | α | rad/s2 | 30000 | 24000 | 21000 | 18000 | 14000 | 11000 | 6700 |
Filling capacity | V | L | 1.1 | 1.5 | 1.3 | 1.5 | 2.1 | 3.1 | 6.3 |
Weight approx. | m | kg | 31 | 38 | 50 | 60 | 80 | 101 | 156 |
Control units: NV – version without control unit
The mounting surface for the control unit is machined and is sealed with the standard seal for control units and a cover plate. This version is ready for retrofitting to control units (HD, HW, EP, EZ). When used directly for “DA" control and in combinations with “DA" control, the appropriate adjustments must be made to the spring assembly of the control cylinder and control plate.
DG – hydraulic control, direct operated
The stroke cylinder of the pump is directly supplied with control pressure by switching a pilot pressure on or off at ports X1 or X2. In this way, the swash plate and thus the displacement can be adjusted between Vg = 0 and Vg max. A different flow direction is associated with each port.
EZ – electric two-point control, with switching solenoid
By energizing or de-energizing a control current to either switching solenoid a or b, the stroke cylinders of the pump are supplied with control pressure by the EZ control unit. In this way, the swash plate and thus the displacement is adjustable without intermediate settings between Vg = 0 and Vg max. A different flow direction is associated with each switching solenoid.
HD – proportional control, hydraulic, pilot-pressure related
Depending on the pressure difference of the pilot pressure pSt in the two control lines (ports Y1 and Y2), the stroke cylinder of the pump is supplied with control pressure via the HD control unit. Thus, the swash plate – and, therefore, the displacement – are infinitely adjustable. A different flow direction is associated with each control line.
HW – proportional control, hydraulic, mechanical servo
Depending on the swivel angle of the control lever and the actuating direction, the stroke cylinder of the pump is supplied with control pressure via the HW control unit. Thus, the swash plate – and, therefore, the displacement – are infinitely adjustable. A different actuating direction is associated with each direction of control lever actuation.
EP – proportional control, electric
Depending on the preselected current “I" at the two proportional solenoids, the stroke cylinder of the pump is supplied with control pressure via the EP controller. Thus, the swash plate – and, therefore, the displacement – are infinitely adjustable. A different flow direction is associated with each proportional solenoid.
DA – automatic control, hydraulic, speed related
Depending on the drive speed, the DA control unit generates a pilot pressure which charges the stroke cylinder of the pump with control pressure via a 4/3-directional valve, allowing the swash plate – and, therefore, the displacement – to be infinitely adjusted. Each flow direction is assigned a switching solenoid on the 4/3-directional valve. You can find details on DA closed loop control in operating instructions “Hydrostatic travel drive with DA closed loop control" – RE 90 330-01-B and in RE 90 330-03-B (functional description and project planning notes).
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
a closed circuit the circuit 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 operating viscosity range (νopt; shaded area) this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68.
Please note: The case drain temperature, which is affected by pressure and speed, is always higher than the circuit 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 consult us.
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 fluid and application conditions. The variable pump A4VG is unsuitable for operation with HFA, HFB and HFC. If 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. When ordering, please indicate the used hydraulic fluid.
Limits of viscosity range
The maximum hydraulic fluid temperature of 115 °C must not be exceeded locally either (e.g. in the bearing area).
The temperature in the bearing area is – depending on pressure and speed – up to 5 K higher than the average case drain temperature.
Details model of Rexroth A4VG pump | |
R902063240 A4VG125HWD3L/32R-NZF02F071K | R902131523 A4VG71DA1D8/32R-NSF02F021BP |
R902072787 A4VG28DGDT1/32R-NSC10F045S S | R902131609 A4VG125EP4DT1/32R-NZF02F001BP |
R902074032 A4VG90HWDT1/32L-NZF02F001S | R902131820 A4VG250HD3D1/32R-NZD10F011D |
R902080089 A4VG56HWD2/32R-NZC02F003S | R902131969 A4VG56EP4D1/32L-NAC02F075SP S |
R902081217 A4VG180NVDT1/32R-NZD02F021S S | R902133053 A4VG125HD3DMT1/32R-NZF02F001D S |
R902085521 A4VG71DA2D7/32R-NZF02F021SP | R902133113 A4VG125EP3DM1/32R-NAF02F071DP |
R902085522 A4VG125DA2D7/32R-NZF02F021SP | R902133354 A4VG125HD3D1/32R-NSF02F021D |
R902085703 A4VG71HWD2/32R-NZF02F071P | R902134324 A4VG250HD3D1/32L-NSD10F041D |
R902085891 A4VG71HWDT1/32R-NAF02K041E S | R902134481 AA4VG140EP4D1/32R-NXF63F071DP S |
R902088221 A4VG90HWD2/32R-NZF02F071S | R902136132 A4VG125HD3D2/32R-NAF02F021S |
R902089470 A4VG71DA1D2/32R-NSF02F011PP | R902136173 A4VG71DA1D2/32R-NZF02F021SQ |
R902090711 AA4VG71NVDMT1/32L-NSF52F001D S | R902136204 A4VG125HD9MT1/32R-NSF02F041S S |
R902092401 AA4VG180DWD1/32L-NSD52F071D S | R902136209 A4VG125EP0MT1/32R-NSF02F021SP S |
R902096442 A4VG71DA1D2/32R-NAF02F001DQ | R902136259 A4VG125HD9MT1/32R-NSF02XXX1S S |
R902099864 A4VG28DGDT1/32R-NSC10K043E | R902136267 A4VG140HD9MT1/32R-NSF02F021S S |
R902099930 AA4VG250DWDMT1/32L-NSD60F071S S | R902136370 A4VG180HD3DM1/32L-NSD02F021D |
R902106041 A4VG90HWD1/32R-NAF02F021P | R902137498 AA4VG180EP4D1/32R-NSD60F071DP S |
R902108182 A4VG56HWDT1/32R-NZC02F016K | R902138600 A4VG180EP4DT1/32L-NZD02F001PP |
R902110502 A4VG125DE1D1/32R-NZF02F071FP | R902138673 AA4VG105EP3D1/32R-NXFXXF021FC S |
R902111154 A4VG40HD3D2/32R-NZC02F023S | R902138976 A4VG180HD3DM1/32R-VSD02F001P S |
R902111163 A4VG40HD3D1/32R-NSC02F025S | R902146055 A4VG140EP4D1/32L-NSF02F001FP |
R902111178 A4VG40HD3DT1/32L-NAC02F043D | R902146062 A4VG125EP3D1/32L-NZF02F001FP |
R902111724 A4VG56EP4DM1/32R-NSC02F025PH | R902148231 A4VG40HD3DM1/32R-NSC02F046P |
R902111872 A4VG56HD3D1/32R-NSC02F003D | R902148350 AA4VG250EP4DMT1/32R-NSD60F001DRP S |
R902111873 A4VG56HD3D1/32L-NSC02F005D | R902148549 AA4VG250EP4DT1/32L-NSD60F071DRP S |
R902111874 A4VG56HD3DM1/32L-NSC02F00XD S | R902148574 AA4VG250EP4DT1/32L-NSD60F071DRP S |
R902111985 A4VG56HD3DT1/32L-NAC02F043D | R902148634 A4VG56HD3DT1/32L-NZC02F003P |
R902112689 A4VG90HWDT1/32R-NZF02F021S | R902148645 A4VG250EP4DT1/32L-NZD10N001EP S |
R902112943 A4VG28DA1D8/32R-NZC10F015DP | R902149552 A4VG125EP4D1/32R-NAF02F021SP |
R902113140 A4VG71EP4D1/32R-NSF02F011FP | R902150598 AA4VG125DGX1/32R-NSF52F69XF S |
R902113146 A4VG71EP4D1/32L-NSF02F001PP | R902151174 A4VG56DWDT1/32R-NTC02F045D S |
R902113204 A4VG71HD3D1/32R-NZF02F001S | R902151243 A4VG71HD3D2/32L-NZF02F001D |
R902113237 A4VG71HD3DT1/32L-NZF02F041D | R902153005 A4VG125EZ2D1/32R-NZF02F001DP |
R902113246 A4VG71HD3DT1/32L-NSF02F001D | R902153107 A4VG125HWDL1/32R-NZF02F021S S |
R902113374 AA4VG71HD3DMT1/32L-NSF52F041D S | R902153146 A4VG90HD3D1/32R-NZF02F021F S |
R902117080 A4VG56EP4D1/32L-NSC02F025SP S | R902153187 A4VG250HD3DT1/32R-NSD10F001D |
R902118298 A4VG71EP3DT1/32R-NAF02F071FP | R902153216 A4VG125HD3DMT1/32L-NZF02F021F |
R902118457 A4VG125HWD2/32R-NZF02F071S | R902153228 A4VG90EP4D1/32R-NZF02F001SP S |
R902119026 A4VG71EP4D1/32L-NZF02F001SP | R902154025 A4VG125HD3DM1/32R-NSF02F041B S |
R902119294 A4VG71EP4D1/32R-NAF02F071PP | R902154045 A4VG140EP4DT1/32L-NAF02F021SX S |
R902119321 A4VG250DA2D2/32R-NSD10F001DP | R902154054 A4VG140EP4DT1/32L-NAF02K691EX S |
R902120195 A4VG71EP3D1/32R-NSF02F071PP S | R902154356 A4VG90EP4DT1/32L-NSF02F001SX S |
R902120242 A4VG40EP3D2/32R-NSC02F003PP S | R902154366 A4VG71HD3DT2/32R-NZF02F021F |
R902120398 A4VG125DA2D8/32R-NTF02F071FP | R902154520 A4VG180HWD7/32R-NSD02F021S |
R902122244 A4VG56EP3D2/32R-NSC02F025PP S | R902154798 A4VG90HD3DMT1/32L-NZF02F071S S |
R902122404 A4VG71EP4DT1/32R-NZF02F001SP S | R902154950 A4VG71EP4DM1/32R-NZF02F001FX S |
R902122767 AA4VG90EP4D1/32L-NSF52K021EP S | R902155505 A4VG125EP4D1/32L-NAF02F001DP |
R902122809 A4VG90HD3DM1/32L-NZF02F07XD S | R902155530 A4VG250EP4D1/32L-NTD10F001DP |
R902122874 A4VG90HD3DT2/32L-NZF02F021S | R902155611 A4VG250EP4DM1/32L-NZD10K073EP S |
R902123351 A4VG125EP4DT1/32R-NTF02F071BP | R902155647 A4VG250EP4DT1/32L-NTD10F021SP |
R902125116 A4VG125EP4D1/32R-NSF02F021DP | R902155675 A4VG180EP4DM1/32L-NSD02F00XBP S |
R902125209 A4VG125HD3D1/32R-NZF02F001D | R902155728 A4VG140EP4DM1/32R-VZF02F001PP S |
R902125252 A4VG125HD3D2/32R-NTF02F691P | R902155734 A4VG180EP4DM1/32L-NZD02K023EP S |
R902125253 A4VG125HD3D2/32R-NSF02F021P | R902155773 A4VG250HD3DT1/32R-NSD10F011S |
R902125968 A4VG125EP0MT1/32R-NSF02F691SP S | R902155815 A4VG56EZ2DM1/32R-NSC02F003FP |
R902125975 A4VG140HD9MT1/32R-NSF02F691S S | R902155874 A4VG180EP4DT1/32R-NZD02F011SP |
R902125976 A4VG125HD9MT1/32R-NSF02F691S S | R902155900 A4VG180EP4DT1/32R-NZD02F011DP |
R902128419 A4VG250EP4DM1/32L-NSD10K07XEX S | R902155941 A4VG180HD3D2/32L-NSD02FXX1P S |
R902128426 A4VG250EP4D1/32R-NZD10F001SP | R902155968 A4VG180EP4DM1/32L-NZD02K02XEP S |
R902128444 A4VG250EP4DT1/32R-NSD10F011DP | R902155989 A4VG180EP4D2/32L-NZD02F071DP S |
R902128445 A4VG250EP4D1/32R-NSD10F001DP | R902157531 A4VG40EP3D2/32R-NZC02F023PP S |
R902128461 A4VG250HD3D1/32R-NSD10F021S | R902157706 A4VG56DA1D4/32R-NZC02F025SP |
R902128467 A4VG250HD3D1/32R-NSD10F691D | R902157987 A4VG71NVDT1/32R-NZF02F021S S |
R902128469 A4VG250HD3D1/32L-NSD10F001D | R902157988 A4VG56NVDT1/32R-NZC02F025S S |
R902128479 A4VG250HD3D1/32L-NZD10F001S | R902158141 A4VG180EP4D1/32R-NZD02F691SP |
R902128480 A4VG250HD3D1/32R-NZD10F001D | R902158201 A4VG250HD3D1/32R-NSD10F071D |
R902128482 A4VG250HD3DT1/32L-NZD10F001S S | R902158365 A4VG90HD3DT1/32L-NZF02F021S S |
R902129162 A4VG125HD3DMT1/32L-NZF02F01XD S | R902158391 A4VG180EP4DM1/32L-NSD02N003EP S |
R902129713 AA4VG180EP4DT1/32R-NSD52F001PP | R902158393 A4VG250EP4DM1/32L-NZD10K723EP S |
R902129723 A4VG180EP4D1/32R-NSD02F001DP | R902159323 A4VG90EP4DM1/32R-NZF02F071SP |
R902129761 A4VG180HD3D1/32L-NSD02F001D | R902159467 A4VG250EP4DM1/32L-NZD10K07XEP S |
R902129764 A4VG180HD3D1/32L-NSD02F021D | R902159599 A4VG71HD3DT2/32L-NZF02F021S S |
R902129892 A4VG180HD9XMT1/32R-NSD02F011F S | R902159612 A4VG90HD3DMT2/32L-NZF02F021B |
R902129894 A4VG180HD3DMT1/32R-NZD02K021E | R902159633 A4VG250HD3DM2/32R-NZD10F041D |
R902129897 A4VG180HD3D2/32R-NTD02F021S | R902159671 A4VG250EP4DMTX/32L-NZD10F021DP S |
R902129919 A4VG180EP4MT1/32R-NSD02F041SP S | R902159695 A4VG90EP4D1/32R-NZF02F001SP |
R902129920 A4VG180EP4MT1/32L-NSD02F071SP S | R902159726 A4VG180DWDMT1/32R-NSD02F001D S |
R902131020 A4VG125EP3D1/32L-NSF10F021DC ES | R902159748 A4VG56EP4DT1/32L-NAC02K025EP S |
R902131079 A4VG250EP4D1/32R-NSD10F021DP | R902159902 A4VG90EZ2D1/32R-NAF02F071BP |
R902131364 A4VG250HD3D1/32L-NSD10F071D | R902159912 A4VG56EP4DT2/32R-NZC02F025SP |
R902131508 A4VG250HD3D1/32R-NZD10F721D | R902159944 AA4VG180EP4DMT1/32L-NTD52F071PP |
R902131510 A4VG250HD3D1/32R-NSD10F001D | R902159979 A4VG180DGD2/32R-NTD02F021S S |
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