Bosch Rexroth | AA11VLO260EP2D11R-NSD62N00H
AA11VLO260EP2D/11R-NSD62N00H
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The AA11VLO260EP2D/11R-NSD62N00H pump belongs to the A11V Variable Pumps series and is manufactured by Bosch Rexroth for closed-circuit hydraulic automation. With a geometric displacement of 260 cm³ per revolution, the unit delivers a flow of 598 l/min at nominal speed and full displacement, supporting large actuator demands. It is designed for circuits operating at a nominal pressure of 350 bar and tolerates peaks up to 400 bar to accommodate transient loads. At nominal speed and 350 bar it can transmit 349 kW, allowing compact power density in mobile or industrial drives. The rotating group reaches a maximum speed of 2300 rpm while limiting inertia to 0.0895 kg·m² so drive acceleration remains manageable. A case volume of 4.6 L provides internal oil capacity for bearing lubrication and heat dissipation.
The pump accepts a maximum input torque of 2787 Nm, while the shaft can pass through-drive torque up to 2065 Nm for tandem arrangements. When operating at full displacement and 350 bar the output torque is 1448 Nm, ensuring predictable load handling. The charge pump must maintain inlet pressure between 0.6 bar absolute and 2 bar absolute to prevent cavitation, and the case housing itself is restricted to 2 bar to protect seals. Control electronics use a 24 V DC solenoid supply to modulate displacement through the EP2D valve. A weight of 138 kg without through-drive hardware aids mounting calculations in mobile equipment.
Technical Specifications
Case Volume
4.6 L
Flow At Nnom And Vg Max
598 l/min
Geometric Displacement (vg Max)
260.0 cm³/rev
Max Inlet Pressure (with Charge Pump)
2 bar abs
Maximum Case Pressure
2 bar
Maximum Input Torque
2787 Nm
Maximum Pressure
400 bar
Maximum Rotational Speed
2300 rpm
Min Inlet Pressure (with Charge Pump)
0.6 bar abs
Moment Of Inertia
0.0895 kg·m²
Nominal Pressure
350 bar
Power At Nnom, 350 Bar
349 kW
Solenoid Supply Voltage (ep2d)
24 V DC
Through-drive Torque, Maximum
2065 Nm
Torque At Vg Max, 350 Bar
1448 Nm
Weight (without Through-drive)
138 kg
1620 Old Apex Road
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