Bosch Rexroth | AA11VLO260LRDS11R-NSD62K72
AA11VLO260LRDS/11R-NSD62K72
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The AA11VLO260LRDS/11R-NSD62K72 pump belongs to the A11V Variable Pumps series and is manufactured by Bosch Rexroth for hydraulic automation tasks that demand stable volume delivery. A displacement of 260.0 cm³/rev sets the volume moved by each shaft turn and supports flow requirements in large drive systems. At nominal speed the pump supplies 598 l/min, giving high circulation rates to cylinders or motors under continuous duty. The unit can reach 2300 rpm, allowing flexible speed control without exceeding mechanical limits. A 1 3/4 in 13T 8/16 DP splined drive shaft couples to common prime movers and ensures secure torque transmission. Clockwise rotation is specified, so circuit designers must match engine direction during installation. The nominal pressure rating of 350 bar defines the continuous working limit for the housing and rotating group. A 4 in suction port accepts large inlet hoses to minimize velocity losses, while a minimum suction pressure of 0.6 bar abs prevents cavitation at the charge pump.
System designers can operate the pump up to 400 bar, which establishes the maximum pressure permitted for brief load peaks. A power demand of 349 kW at nominal conditions allows accurate sizing of the prime mover. Internal case pressure is limited to 2 bar, so drain lines must remain unrestricted. The default load-sense delta-p setting of 18 bar maintains a small standby pressure difference and lets the circuit respond quickly when flow demand rises. The shaft can accept 1640 Nm of input torque, giving a margin above typical running values. Under the defined load the rotating group develops 1448 Nm, information needed to evaluate coupling components. A through-drive torque capacity of 2065 Nm permits mounting an additional pump in tandem without overstressing the main shaft. Fluid exits through a 1 1/2 in SAE J518 working port, providing a standardized flange for high-pressure plumbing.
Technical Specifications
Case Pressure Max
2 bar
Direction Of Rotation
Clockwise (R)
Displacement (vg Max)
260.0 cm³/rev
Drive Shaft S
1 3/4 in 13T 8/16 DP
Flow At Nnom (vg Max)
598 l/min
Ls Δp Default Setting
18 bar
Max Input Torque (s Shaft)
1640 Nm
Max Rotational Speed (vg Max)
2300 rpm
Maximum Pressure
400 bar
Nominal Pressure
350 bar
Power At Nnom (Δp=350 Bar)
349 kW
Suction Port S1 Size
4 in
Suction Pressure Min (charge Pump)
0.6 bar abs
Through-drive Torque Max
2065 Nm
Torque At Vg Max (Δp=350 Bar)
1448 Nm
Working Port Size
1 1/2 in (SAE J518)
1620 Old Apex Road
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