Bosch Rexroth | AA4VG71EP4D132R-NSF52F001DP
AA4VG71EP4D1/32R-NSF52F001DP
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The AA4VG71EP4D1/32R-NSF52F001DP pump belongs to the AA4VG Variable Pumps series and is produced by Bosch Rexroth for closed-loop hydraulic drives. It offers a geometric displacement of 71 cm³ per revolution, and at 3300 rpm with full displacement and zero differential pressure it reaches its nominal operating speed. Under these conditions the pump delivers 234 l/min and requires 156 kW. The pressure housing is designed for a maximum of 450 bar to withstand transient load spikes. A case volume of 1.3 l supports internal oil circulation, and the assembly weighs 50 kg without a through-drive section.
The EP4 electro-proportional control runs on 24 V and limits actuator current to 0.77 A. An integrated boost section provides 19.6 cm³ per revolution to keep charge pressure available. Continuous rotation is limited to 3600 rpm, while short-term operation may reach 4100 rpm. Shaft S can accept 602 Nm of input torque, and the through-drive flange passes up to 660 Nm to an attached pump. At the nominal system pressure of 400 bar and full displacement the hydraulic group generates 452 Nm.
Technical Specifications
Boost Pump Displacement
19.6 cm³
Case Volume
1.3 l
Control Voltage (ep4)
24 V
Current Limit (ep4)
0.77 A
Displacement (geometric Per Rev)
71 cm³
Flow At Nnom And Vg Max
234 l/min
Intermittent Max Speed (nmax2)
4100 rpm
Limited Max Speed (nmax1)
3600 rpm
Max Input Torque (shaft S)
602 Nm
Max Through-drive Torque
660 Nm
Maximum Pressure
450 bar
Nominal Pressure
400 bar
Power At 400 Bar (nnom)
156 kW
Speed At Vg Max, Δp=0 (nnom)
3300 rpm
Torque At 400 Bar (vg Max)
452 Nm
Weight (without Through Drive)
50 kg
1620 Old Apex Road
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