Bosch Rexroth | AA11VLO260LRDU211R-NSD62K72H
AA11VLO260LRDU2/11R-NSD62K72H
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The AA11VLO260LRDU2/11R-NSD62K72H variable displacement pump belongs to the A11V Variable Pumps series and is manufactured by Bosch Rexroth. Designed for hydraulic automation circuits, it converts mechanical drive energy into regulated fluid flow for actuators. A geometric displacement of 260.0 cm³ per revolution sets the volumetric baseline for each rotation. At the rated speed of 2300 rpm and maximum displacement, the pump supplies 598 l/min to the system. Continuous operation is permitted at a nominal pressure of 350 bar, while short-term peaks can reach 400 bar without structural damage. Under nominal conditions the shaft must transmit 349 kW, so matching power units are required. Correspondingly, output torque reaches 1448 Nm at 350 bar, indicating the drive coupling capacity necessary for safe operation.
Physical and connection features support installation and service tasks. The unit weighs 138 kg without a through-drive, which influences crane selection during mounting. An internal case volume of 4.6 L helps dilute leakage oil heat before it returns to tank. High inlet capacity is accommodated by a 4 in SAE J518 suction port, whereas the pressure outlet uses a 1 1/2 in SAE J518 working port. Pilot supply attaches at a control pressure port threaded M14 x 1.5, and a measuring port threaded M12 x 1.5 accepts test gauges for commissioning checks. Trapped air can be vented through an air bleed port that carries an M33 x 2 thread, the same size provided on the twin drain ports that route case leakage back to the reservoir.
Technical Specifications
Air Bleed Port Thread (r)
M33 x 2
Case Volume
4.6 L
Control Pressure Port Thread (g)
M14 x 1.5
Drain Port Thread (t1/t2)
M33 x 2
Flow At Nnom And Vg Max
598 l/min
Geometric Displacement
260.0 cm3/rev
Maximum Pressure
400 bar
Measuring Port Thread (m/m1)
M12 x 1.5
Nominal Pressure
350 bar
Nominal Speed (vg Max)
2300 rpm
Power At Nnom, Vg Max, 350 Bar
349 kW
Suction Port Size (s1)
4 in (SAE J518)
Torque At 350 Bar
1448 Nm
Weight (without Through-drive)
138 kg
Working Port Size (a, A1)
1 1/2 in (SAE J518)
1620 Old Apex Road
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