Bosch Rexroth | AA10VSO71DFR131R-VKC92N00
AA10VSO71DFR1/31R-VKC92N00
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The AA10VSO71DFR1/31R-VKC92N00 variable pump is part of the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth for hydraulic automation tasks where adjustable output flow is required. Its displacement is 71 cm³ per revolution, so the delivered oil volume scales directly with input speed. At nominal speed the pump supplies up to 156 L/min while drawing 73 kW, meeting the demands of medium power circuits. Continuous service is allowed at a nominal pressure of 280 bar, and 316 Nm of drive torque is needed at that pressure. The internal case holds 1.6 L of fluid for lubrication and cooling, and clockwise rotation matches common prime movers. Working ports use SAE flanges conforming to ISO 6162 for straightforward plumbing.
Mechanical mounting is provided by an ISO 3019-1 two-hole flange together with a parallel keyed shaft of the same standard, enabling direct coupling without adapters. The DFR1 control maintains a differential setting of 200 psi, adjusting swashplate angle to balance pump output with system load. Maximum speed at full displacement is limited to 2200 rpm, and short-term peaks can be tolerated up to 350 bar. FKM seals withstand hydraulic oil and temperature variations to retain integrity over long duty cycles. No through drive is available, so the unit ends the drive line in single-pump installations. A bare weight of 78 lb must be considered during bracket design and lifting procedures.
Technical Specifications
Case Volume
1.6 L
Differential Pressure Setting (dfr1)
200 psi
Direction Of Rotation
Clockwise
Displacement Per Revolution
71 cm³/rev
Drive Shaft Type
Parallel Keyed (ISO 3019-1)
Max Flow At Nnom
156 L/min
Max Power At Nnom
73 kW
Max Speed At Vg Max
2200 rpm
Mounting Flange
ISO 3019-1 2-Hole
Nominal Pressure
280 bar
Peak Pressure
350 bar
Seal Material
FKM
Through Drive
None
Torque At 280 Bar
316 Nm
Weight (without Through Drive)
78 lb
Working Ports
SAE Flange (ISO 6162)
1620 Old Apex Road
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