Bosch Rexroth | AA10VSO71DFLR31RPKC92N00S1088
AA10VSO71DFLR/31RPKC92N00S1088
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The AA10VSO71DFLR/31RPKC92N00S1088 pump belongs to the A10VSO Variable Pumps series and is produced by Bosch Rexroth. It is an axial-piston unit intended to regulate hydraulic energy in automated machinery. A displacement of 71 cm³ per revolution sets the theoretical volume moved per shaft rotation, while a rated flow of 41.2 gpm (156 l/min) at nominal speed provides stable circuit supply. Continuous duty is supported at a nominal pressure of 4100 psi (280 bar), and peak demand can reach 5100 psi (350 bar) without structural overload. The pump operates up to 2200 rpm so designers can match speed with engine or motor drives, and it draws 98 HP (73 kW) at that point when set to maximum displacement. Clockwise rotation is mandatory because the internal swashplate and porting are fixed for a right-hand drive. An ISO 3019-1 two-hole mounting flange simplifies coupling to standard C-face motors, and compatibility with HLP mineral oil under DIN 51524-2 ensures fluid choice aligns with common plant inventories.
The DFLR control combines pressure, flow, and power limiting so the pump automatically trims swashplate angle to match demand without breaching set thresholds. A case volume of 0.420 gal (1.6 l) forms an internal oil buffer that supports bearing lubrication and thermal balance. The drive shaft tolerates up to 319 lb-ft (433 Nm) of input torque, and a rotary stiffness of 60 562 lb-ft/rad preserves alignment between the shaft and rotor under pulsating loads. At the 4100 psi operating pressure, hydraulic output torque reaches 233 lb-ft (316 Nm), supplying cylinders and motors with consistent force. Total weight is 78 lb (35.2 kg), which eases installation yet adds mass that damps vibration in mobile platforms. These mechanical characteristics help the variable pump integrate into closed-loop systems where precise control and reliable duty cycles are required.
Technical Specifications
Case Volume
0.420 gal (1.6 l)
Control Type
DFLR (Pressure/Flow/Power)
Direction Of Rotation
Clockwise (R)
Displacement
71 cm³/rev
Flow At Nnom (vgmax)
41.2 gpm (156 l/min)
Hydraulic Fluid
HLP Mineral Oil (DIN 51524-2)
Max Input Torque (shaft K)
319 lb-ft (433 Nm)
Max Speed (vgmax)
2200 rpm
Maximum Pressure
5100 psi (350 bar)
Mounting Flange
ISO 3019-1 2-hole (C)
Nominal Pressure
4100 psi (280 bar)
Power At Nnom (vgmax)
98 HP (73 kW)
Rotary Stiffness (shaft K)
60562 lb-ft/rad
Through Drive
None (N00)
Torque At 4100 Psi
233 lb-ft (316 Nm)
Weight (without Through Drive)
78 lb (35.2 kg)
1620 Old Apex Road
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