Bosch Rexroth | AA11VLO260DRS11L-NSD62N00
AA11VLO260DRS/11L-NSD62N00
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The AA11VLO260DRS/11L-NSD62N00 pump belongs to the A11V Variable Pumps series from Bosch Rexroth and supplies adjustable hydraulic flow to automated machinery. Its geometric displacement of 260.0 cm³ per revolution determines the volume moved each shaft turn, while a permitted speed limit of 2300 rpm allows compatibility with fast prime movers. At nominal speed the unit provides up to 598 L/min, matching the requirements of high-flow circuits. Continuous operation is rated for 350 bar, and the maximum pressure of 400 bar covers short load spikes. When delivering at 350 bar the shaft must transmit 349 kW and 1448 Nm, values used for motor and coupling selection. A pressure change rate of 16 000 bar/s defines the fastest allowable ramp to maintain control stability, and a moment of inertia of 0.0895 kg·m² helps predict acceleration behavior during start-up or speed modulation.
The housing tolerates a case pressure of 2 bar, so drain routing must keep backpressure below this value, and the 4.6 L internal volume holds leakage oil for cooling. A factory delta-pressure setting of 18 bar establishes the load-sensing margin that governs swashplate position. The 4 in SAE J518 suction port accepts charge flow, and inlet pressure must stay above 0.6 bar absolute to avoid cavitation. Delivery exits through a 1 1/2 in SAE J518 working port that aligns with standard manifolds. The assembly weighs 138 kg without a through-drive, information needed for lifting and frame design. These hydraulic interfaces and control limits enable the variable pump to integrate into open or closed circuits where precise flow regulation is required.
Technical Specifications
Case Max Pressure
2 bar
Case Volume
4.6 L
Geometric Displacement
260.0 cm3/rev
Ls Δp Standard Setting
18 bar
Max Flow At Nnom
598 l/min
Max Pressure Change Rate
16000 bar/s
Max Rotational Speed
2300 rpm
Maximum Pressure
400 bar
Moment Of Inertia
0.0895 kg·m²
Nominal Pressure
350 bar
Power At 350 Bar
349 kW
Suction Port (charge Pump) Size
4 in (SAE J518)
Suction Port Min Pressure
0.6 bar absolute
Torque At 350 Bar
1448 Nm
Weight (without Through-drive)
138 kg
Working Port Size
1 1/2 in (SAE J518)
1620 Old Apex Road
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