Bosch Rexroth | AA11VLO190LRDS11R-NSD62N00
AA11VLO190LRDS/11R-NSD62N00
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The AA11VLO190LRDS/11R-NSD62N00 variable pump is manufactured by Bosch Rexroth within the A11V Variable Pumps series and is used to regulate hydraulic flow in automated systems. A geometric displacement of 193.0 cm³ per revolution meters the required oil volume for each shaft turn, and a maximum flow of 483 l/min at full displacement supports large actuators. The nominal operating speed is 2500 rpm so the pump can be driven directly by many industrial engines. Clockwise rotation is specified to keep internal port timing correct. An internal case volume of 3.8 L provides space for leakage oil and bearing lubrication, while a rotating group inertia of 0.0577 kg·m² reduces start-up load on the prime mover. The pump mass is 104 kg without a through-drive, aiding installation with conventional brackets. Its load-sense controller needs 3.7 l/min pilot flow and keeps a pressure differential of 18 bar to match delivery to circuit demand.
The hydraulic section tolerates a maximum pressure of 400 bar, and continuous duty is defined by a nominal pressure of 350 bar. Under that condition the shaft supplies 281 kW and must transmit 1075 Nm, giving designers clear drive-train requirements. Transient events can impose up to 2226 Nm on the input shaft without damage, and a permissible through-drive torque of 1760 Nm lets the unit power auxiliary pumps in the same line. A rate of pressure change of 16 000 bar/s enables rapid system response during load reversals, supporting precise motion in hydraulic automation.
Technical Specifications
Case Volume
3.8 L
Direction Of Rotation
Clockwise (R)
Geometric Displacement
193.0 cm³/rev
Ls Control Fluid Demand
3.7 l/min
Ls Δp Standard Setting
18 bar
Max Flow At Vg Max
483 l/min
Max Input Shaft Torque
2226 Nm
Maximum Pressure
400 bar
Moment Of Inertia
0.0577 kg·m²
Nominal Pressure
350 bar
Nominal Speed At Vg Max
2500 rpm
Power At 350 Bar
281 kW
Rate Of Pressure Change
16000 bar/s
Through-drive Torque, Maximum
1760 Nm
Torque At 350 Bar
1075 Nm
Weight (without Through-drive)
104 kg
1620 Old Apex Road
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