Bosch Rexroth | AA10VSO18DFR31R-VUC62N00
AA10VSO18DFR/31R-VUC62N00
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The AA10VSO18DFR/31R-VUC62N00 variable pump belongs to the A10VSO Variable Pumps series manufactured by Bosch Rexroth for controlled hydraulic automation. It meters fluid with a displacement of 18 cm³ per revolution and is driven clockwise to match standard right-hand prime movers. When the swashplate is at maximum volume, the unit delivers 59 L/min at a rated speed of 3300 rpm. The housing tolerates a maximum pressure of 350 bar, while continuous operation is limited to a nominal pressure of 280 bar. At that working point the shaft must supply 28 kW and 80 Nm, figures used to size the drive motor. Cavitation is avoided by maintaining at least 0.8 bar absolute at the inlet, and a 1 in SAE suction port provides the required cross-section for low velocity flow.
The discharge side is fitted with a 3/4 in SAE pressure port, and pilot control oil is routed through a 7/16-20 UNF-2B threaded port. The integrated DFR regulator holds outlet pressure by applying a 14 bar differential and shifts the swashplate in 40 ms to respond to load changes. Case drainage must remain below 2 bar absolute to protect internal bearings, and all dynamic seals are made from FKM to handle hot hydraulic oil. These connection sizes, control settings, and pressure limits allow the pump to integrate reliably into automated circuits that demand precise flow and rapid pressure adjustment.
Technical Specifications
Dfr Differential Pressure
14 bar
Dfr Stroking Time
40 ms
Direction Of Rotation
Clockwise
Displacement
18 cm³/rev
Max Case Drain Pressure (abs)
2 bar
Max Flow (nnom, Vgmax)
59 L/min
Maximum Pressure
350 bar
Min Inlet Pressure (abs)
0.8 bar
Nominal Pressure
280 bar
Pilot Port Thread
7/16-20 UNF-2B
Power At Nnom (Δp 280 Bar)
28 kW
Pressure Port Size
3/4 in (SAE)
Rated Speed (vgmax)
3300 rpm
Sealing Material
FKM
Suction Port Size
1 in (SAE)
Torque At 280 Bar
80 Nm
1620 Old Apex Road
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