Bosch Rexroth | AA10VO28DR52L-PSC61N00
AA10VO28DR/52L-PSC61N00
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The AA10VO28DR/52L-PSC61N00 is a variable displacement axial piston pump in the A10VSO Variable Pumps series from Bosch Rexroth. It supplies regulated hydraulic flow for mobile and industrial automation circuits. The geometric displacement is 28 cm³ per revolution, defining the volume transferred each shaft turn. At the nominal speed of 3000 rpm with the displacement set to maximum, the pump provides 84 L/min for steady circuit demand. A nominal pressure rating of 280 bar matches the standard Dr control setting that limits system pressure to this level during continuous duty. Brief overloads can reach a peak pressure of 350 bar without damage. The SAE J744 101-2 (B) mounting flange aligns with common SAE B motor pads, simplifying installation. Dynamic response is aided by a moment of inertia of 0.0017 kg·m², which reduces the torque required to accelerate the rotating group.
The allowable speed extends to 3600 rpm when displacement is reduced, giving headroom for drives that run faster than the nominal point. Hydraulic intake connects via an SAE J518 1 1/4 in inlet port, and flow is discharged through an SAE J518 3/4 in pressure port that mates with standard manifold plates. Case oil is returned through a 3/4-16 UNF-2B drain port, while control pressure lines attach at a 7/16-20 UNF-2B pilot port. Shaft output torque reaches 125 Nm at 280 bar, and the journal tolerates an overhang moment of 880 Nm for belt or gear coupling loads. The pump weighs 15 kg without a through-drive adapter, so a single person can position it inside a power unit or machine frame.
Technical Specifications
Case Drain Port Thread
3/4-16 UNF-2B
Dr Control Standard Setting
280 bar
Geometric Displacement
28 cm3/rev
Inlet Port Size
SAE J518 1 1/4 in
Max Flow (at 3000 Rpm, Vg Max)
84 L/min
Max Permissible Speed
3600 rpm
Moment Of Inertia
0.0017 kg·m²
Mounting Flange
SAE J744 101-2 (B)
Nominal Pressure
280 bar
Nominal Speed (at Vg Max)
3000 rpm
Peak Pressure
350 bar
Permissible Overhang Moment
880 Nm
Pilot Port Thread
7/16-20 UNF-2B
Pressure Port Size
SAE J518 3/4 in
Torque (at 280 Bar)
125 Nm
Weight (without Through Drive)
15 kg
1620 Old Apex Road
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