Bosch Rexroth | AA4VG71EP3D132R-NSF52F001DP
AA4VG71EP3D1/32R-NSF52F001DP
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The AA4VG71EP3D1/32R-NSF52F001DP pump is produced by Bosch Rexroth within the AA4VG Variable Pumps series. It provides adjustable hydraulic flow for automated drive circuits. The geometric displacement of 71 cm³/rev defines the internal volume moved each shaft turn. Clockwise rotation matches common closed-circuit layouts. A nominal speed of 3300 rpm represents the standard operating point, where the pump delivers 234 l/min of flow to downstream components. Continuous service is supported at 400 bar, while a 450 bar ceiling covers short load spikes. At the nominal pressure the shaft transmits 156 kW of power and 452 Nm of torque, supplying high energy density to hydrostatic transmissions.
The integral boost stage displaces 19.6 cm³/rev to maintain case charge and control stability. Internal case volume is 1.3 l, providing space for oil cooling and de-aeration. Electronic control relies on a 12 V EP3 valve; displacement begins at 400 mA, reaches full stroke at 1200 mA, and is electronically limited to 1.54 A to protect the driver. Intermittent operation up to 4100 rpm allows short bursts of higher output without mechanical overstress. Rotary group inertia of 0.0097 kg m² affects speed ramp-up and ensures predictable response during dynamic duty cycles.
Technical Specifications
Boost Pump Displacement
19.6 cm3/rev
Case Volume
1.3 l
Control Current End (vg Max)
1200 mA
Control Current Limit
1.54 A
Control Current Start (vg = 0)
400 mA
Control Voltage (ep3)
12 V
Direction Of Rotation
Clockwise
Flow At Nominal Speed
234 l/min
Geometric Displacement
71 cm3/rev
Max Speed (intermittent)
4100 rpm
Maximum Pressure
450 bar
Nominal Pressure
400 bar
Nominal Speed
3300 rpm
Power At 400 Bar
156 kW
Rotary Group Inertia
0.0097 kg m²
Torque At 400 Bar
452 Nm
1620 Old Apex Road
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