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The AA10VSO45DR/31R-PKC62K03 from Bosch Rexroth is in the A10VSO Variable Pumps series and supplies controlled oil flow for hydraulic automation. A built-in DR pressure controller keeps the line pressure within the set limit to protect downstream components. The unit displaces 45 cm³ per revolution, giving predictable flow per shaft turn. When driven at its nominal speed of 2600 rpm and full displacement, it supplies 117 L/min to cylinders or motors. Operating continuously at 280 bar demands 55 kW of drive power, so prime movers must match this load. At the same pressure the shaft transmits 200 Nm, guiding the selection of couplings and gearboxes. Rotation is clockwise, matching common right-hand pump arrangements. The pump can run up to 3100 rpm where higher speed is needed within design limits. A 1 1/2 in SAE suction flange provides a low restriction inlet for warm oil.
The pump endures transient peaks up to 350 bar, so manifold designers can accommodate brief overload events without relief chatter or component fatigue. Hydraulic return oil exits through a 7/8-14 UNF-2B drain port, a common thread that simplifies housing layouts and minimizes the inventory of adapter fittings in service departments. The pressure signal for the controller is linked through a 7/16-20 UNF-2B pilot port, letting integrators route the sensing line away from hot zones and maintain precise feedback. Delivery oil reaches connected machinery through a 1 in SAE flange outlet; the compact flange supports the rated flow while keeping envelope dimensions tight for crowded powerpacks. The assembly weighs 23.5 kg without a through drive, allowing most installations to be completed by one person using standard shop cranes or even a sturdy bench hoist.
Control Type
Pressure Controller (DR)
Drain Port Thread (l/l1)
7/8-14 UNF-2B
Flow At Nominal Speed (vg Max)
117 L/min
Geometric Displacement
45 cm³/rev
Max Permissible Speed
3100 rpm
Maximum Pressure
350 bar
Nominal Pressure
280 bar
Nominal Speed (at Vg Max)
2600 rpm
Pilot Port Thread (x)
7/16-20 UNF-2B
Power At Nnom (280 Bar)
55 kW
Rotation Direction
Clockwise
Suction Port Size (s)
1 1/2 in SAE Flange
Torque At 280 Bar (vg Max)
200 Nm
Weight (without Through Drive)
23.5 kg
Working Port Size (b)
1 in SAE Flange
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