Bosch Rexroth | AA10VO28DFR52L-VSC64N00
AA10VO28DFR/52L-VSC64N00
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The AA10VO28DFR/52L-VSC64N00 pump belongs to the A10VSO Variable Pumps series from Bosch Rexroth and supplies variable hydraulic flow for automated circuits. Its displacement is 28 cm³ per revolution, so it meters a defined volume with each shaft turn. At 1800 rpm the pump delivers 50 L/min, providing baseline flow for medium-power actuators. The inlet port is sized to SAE J518 1 1/4 in to allow unrestricted oil entry, while the pressure port follows SAE J518 3/4 in for consistent connection to system piping. Both ports conform to the SAE J518 standard, ensuring interchange with common flange fittings. A mounting flange that meets SAE J744 positions the housing accurately on prime movers. The assembly weighs 15 kg without fluid, which aids handling during service. A nominal working pressure of 280 bar defines the continuous load the pump can sustain without accelerated wear.
For higher transients the unit tolerates a peak pressure of 350 bar so short overloads do not compromise integrity. When set to full displacement, the pump reaches 84 L/min at rated speed, and it can spin at 3000 rpm under that condition. If the displacement is reduced, the maximum permissible speed rises to 3600 rpm, supporting high-speed cycles with lower flow. A case drain interface specified as ISO 11926 3/4-16 UNF-2B routes leakage oil back to tank and maintains bearing lubrication. The DFR control keeps outlet flow stable by holding a 14 bar differential between pump and load, which safeguards against supply starvation. Output torque is 45 Nm at 100 bar and climbs to 125 Nm at 280 bar, data that assists designers in sizing couplings and drive shafts.
Technical Specifications
Case Drain Port
ISO 11926 3/4-16 UNF-2B
Dfr Differential Pressure (std)
14 bar
Displacement
28 cm3/rev
Flow At 1800 Rpm
50 L/min
Inlet Port
SAE J518 1 1/4 in
Max Flow (at Nnom, Vgmax)
84 L/min
Max Speed (at Reduced Vg)
3600 rpm
Max Speed (at Vg Max)
3000 rpm
Mounting Flange Standard
SAE J744
Nominal Pressure
280 bar
Peak Pressure
350 bar
Port Standard
SAE J518
Pressure Port
SAE J518 3/4 in
Torque At 100 Bar
45 Nm
Torque At 280 Bar
125 Nm
Weight (without Fluid)
15 kg
1620 Old Apex Road
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