Bosch Rexroth | AA10VO45DFR31L-VUC62N00
AA10VO45DFR/31L-VUC62N00
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The AA10VO45DFR/31L-VUC62N00 variable pump belongs to the A10VSO Variable Pumps series produced by Bosch Rexroth for hydraulic automation that requires adaptive delivery. It employs DFR pressure-flow control so the swashplate modulates displacement to keep both parameters within target ranges. A geometric displacement of 45 cm³ per revolution establishes the basic volume moved each shaft turn. When driven at 1800 rpm the pump supplies 21.4 gpm, making it suitable for medium flow circuits. The DFR control reacts at a 14 bar differential, ensuring timely correction once that margin is passed. Under maximum swashplate angle the unit can reach 30.9 gpm, while regulation keeps flow deviation within 0.48 gpm for repeatable performance. The rotating assembly tolerates speeds up to 2600 rpm at full displacement, allowing systems to alternate between low-speed precision and high-speed travel without exceeding mechanical limits.
Continuous operation is supported at a nominal pressure of 280 bar, and the housing withstands peaks up to 350 bar during short transients. Driving torque is 200 Nm at nominal pressure, a value used to choose compatible motors and couplings. Suction conditions must maintain at least 0.8 bar absolute inlet pressure to prevent cavitation, while case drain backpressure is limited to 2 bar to protect shaft seals. All service ports are located on the side to simplify hose routing in compact power units. The pump is supplied without a through drive, so it cannot power an auxiliary unit in tandem. Dry mass is 46 lb, permitting single-person handling during installation and maintenance tasks.
Technical Specifications
Control Type
DFR (Pressure-Flow Control)
Dfr Differential Pressure
14 bar
Displacement
45 cm³/rev
Flow At 1800 Rpm
21.4 gpm
Max Case Drain Pressure
2 bar
Max Flow
30.9 gpm
Max Flow Deviation (dfr)
0.48 gpm
Max Speed At Vg Max
2600 rpm
Min Inlet Absolute Pressure
0.8 bar
Nominal Pressure
280 bar
Peak Pressure
350 bar
Service Ports
Side
Through Drive
None
Torque At 280 Bar
200 Nm
Weight (without Fluid)
46 lb
1620 Old Apex Road
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