Bosch Rexroth | AA10VSO140DRG31R-VKD62N00
AA10VSO140DRG/31R-VKD62N00
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The AA10VSO140DRG/31R-VKD62N00 axial piston unit is manufactured by Bosch Rexroth within the A10VSO Variable Pumps series and supplies adjustable hydraulic flow for automation circuits. It provides a displacement of 140 cm³ per revolution, determining the volume moved each shaft turn. The unit withstands a maximum pressure of 350 bar, allowing use in high-pressure systems, while the nominal pressure of 280 bar defines its continuous working limit. When the swashplate is at maximum angle, shaft speed is limited to 1800 rpm, establishing the ceiling for full displacement operation. At that condition the pump delivers up to 252 l/min, so cylinders and motors receive substantial flow without parallel units. Input power reaches 118 kW at 1800 rpm and 280 bar, indicating the demand placed on the prime mover. Output torque is 623 Nm at 280 bar, providing the mechanical drive necessary for heavy-duty hydraulics. Rotation is clockwise when viewed from the shaft end, simplifying alignment with standard right-hand engines.
The pump can accelerate to 2100 rpm when displacement is reduced, giving designers extra speed margin during partial flow operation. A DRG control differential pressure of 20 bar keeps the swashplate stable and maintains consistent volume adjustment. Case drain pressure is limited to 2 bar absolute, protecting shaft seals and bearings from excess back pressure, and a 3.0 l housing volume promotes oil circulation and cooling. The X pilot port uses a 9/16-18 UNF-2B thread, allowing direct connection to common control lines. FKM sealing material resists heat and aggressive fluids, extending service life in demanding environments. A moment of inertia of 0.574 lb-ft² reduces start-up loading on the drive train, easing acceleration. The pump weighs 60 kg without fluid, so lifting gear is recommended during installation.
Technical Specifications
Case Drain Pressure Max (abs)
2 bar
Case Volume
3.0 l
Displacement
140 cm3/rev
Drg Differential Pressure
20 bar (standard)
Max Flow At Max Speed
252 l/min
Max Speed (reduced Vg)
2100 rpm
Max Speed At Vgmax
1800 rpm
Maximum Pressure
350 bar
Moment Of Inertia
0.574 lb-ft²
Nominal Pressure
280 bar
Pilot Port X Thread
9/16-18 UNF-2B
Power At 1800 Rpm (280 Bar)
118 kW
Rotation Direction
Clockwise
Sealing Material
FKM
Torque At 280 Bar
623 Nm
Weight (without Fluid)
60 kg
1620 Old Apex Road
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