Bosch Rexroth | AA4VG180EP3D132R-NSD52F001DH
AA4VG180EP3D1/32R-NSD52F001DH
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The AA4VG180EP3D1/32R-NSD52F001DH variable pump belongs to the AA4VG Variable Pumps series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation circuits. It is an axial piston unit that varies displacement to match load demand. Each revolution moves 180 cm³ of fluid, so displacement scaling directly controls output flow. At the rated input speed it delivers 450 l/min, providing high volume for mobile or industrial drives. Continuous service is allowed up to 2500 rpm, while 3000 rpm is permitted for short periods to handle transient demand. Regular operation is set at 400 bar, and momentary peaks may reach 450 bar without damage. Driving the pump at 400 bar requires 1146 Nm of torque, information used to size the prime mover. A mass of 101 kg must be supported by the mounting arrangement and lifting equipment.
For circuit stability the unit needs a 25 bar boost pressure at the inlet, and a minimum electro-hydraulic control pressure 20 bar above case pressure keeps the EP3 mechanism responsive. The EP3 proportional electric control varies displacement according to a 12 V DC command, enabling closed-loop speed or pressure management from mobile controllers. Clockwise shaft rotation defines the correct engine or motor coupling orientation. Suction conditions must remain above 0.8 bar absolute so that cavitation does not occur during high flow events. Port A and B are located on the top and bottom faces with port S on the bottom, a layout that guides manifold and hose routing. Primary seals are NBR, while the shaft seal is FKM, ensuring compatibility with common petroleum-based fluids and limiting external leakage.
Technical Specifications
Boost Pressure Nominal
25 bar
Control Type
EP3 (Proportional Electric)
Control Voltage
12 V DC
Direction Of Rotation
Clockwise
Flow At Nnom (per Pump)
450 l/min
Geometric Displacement (per Pump)
180 cm³/rev
Max Continuous Speed
2500 rpm
Max Intermittent Speed
3000 rpm
Maximum Pressure
450 bar
Min Control Pressure (ep)
20 bar above case
Nominal Pressure
400 bar
Sealing Material
NBR; shaft seal FKM
Suction Pressure Min (cont.)
0.8 bar abs
Torque At 400 Bar (per Pump)
1146 Nm
Weight (per Pump)
101 kg
Working Port Layout
A,B top/bottom; S bottom
1620 Old Apex Road
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