Bosch Rexroth | AA11VLO145LE2S11L-NSD62N00P
AA11VLO145LE2S/11L-NSD62N00P
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The AA11VLO145LE2S/11L-NSD62N00P variable pump belongs to the A11V Variable Pumps series from Bosch Rexroth and is intended to supply adjustable flow in hydraulic automation circuits. Its geometric displacement is 145.0 cm³ per revolution, setting the volume moved each shaft turn, and a flow of 363 l/min can be delivered when the shaft runs at 2500 rpm. The maximum rotational speed of 2500 rpm defines the mechanical limit for continuous operation, while a nominal pressure of 350 bar represents the continuous working load. Peak system demands are handled by an allowable maximum pressure of 400 bar. At the rated condition of 350 bar the shaft must provide 808 Nm of torque and 211 kW of drive power. A maximum rate of pressure change of 16000 bar/s supports fast control loops where rapid load transitions occur.
The internal case volume is 2.9 L, providing space for leakage oil and thermal expansion, and the housing can withstand a case pressure of 2 bar without damage. Suction conditions are accommodated between a minimum inlet pressure of 0.6 bar absolute and a maximum of 2 bar absolute to prevent cavitation and overloading of the suction ports. Dynamic behavior is aided by a maximum angular acceleration of 9000 rad/s² and a rotor moment of inertia of 0.036 kg·m², allowing quick speed adjustments. Electrical actuation uses a 24 V control voltage for the LE2 regulator, integrating the pump into standard machine control supplies. The assembly weighs 73 kg without a through-drive, so structural supports must be sized accordingly.
Technical Specifications
Case Volume
2.9 L
Control Voltage (le2)
24 V
Flow At 2500 Rpm (vgmax)
363 l/min
Geometric Displacement
145.0 cm³/rev
Max Angular Acceleration
9000 rad/s²
Maximum Case Pressure
2 bar
Maximum Inlet Pressure (suction)
2 bar abs
Maximum Pressure
400 bar
Maximum Rotational Speed
2500 rpm
Minimum Inlet Pressure (suction)
0.6 bar abs
Moment Of Inertia
0.036 kg·m²
Nominal Pressure
350 bar
Power At 2500 Rpm, 350 Bar
211 kW
Rate Of Pressure Change Max
16000 bar/s
Torque At 350 Bar
808 Nm
Weight (without Through-drive)
73 kg
1620 Old Apex Road
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