Bosch Rexroth | AA10VSO18DR31R-PSC12N00
AA10VSO18DR/31R-PSC12N00
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The AA10VSO18DR/31R-PSC12N00 pump is part of the A10VSO Variable Pumps series from Bosch Rexroth and supplies adjustable hydraulic flow for automated machinery. Its fixed displacement of 18 cm³ per revolution defines the volume moved each shaft cycle, and a flow of 8.5 gpm (32 L/min) is available when the shaft turns at 1800 rpm for mid-range circuit demands. The unit tolerates a nominal pressure of 4100 psi (280 bar) during continuous duty and can briefly reach 5100 psi (350 bar) to handle pressure spikes. A maximum speed of 3300 rpm at full displacement supports compact power transmission, while clockwise shaft rotation matches right-hand prime movers. The working port uses a 3/4 in ISO 6162-1 interface for main line connection, and the assembly weighs 28 lb (12.9 kg) to ease installation in confined frames.
A higher speed limit of 3900 rpm is permissible when the pump runs at reduced displacement, allowing elevated flow without oversize hardware. At 280 bar the drive shaft must withstand 59 lb-ft (80 Nm) of torque, sizing the coupling for reliable power transfer. The suction side is served by a 1 in ISO 6162-1 port, and inlet pressure may reach 145 psi (10 bar) to prevent cavitation in flooded tank layouts. Case drainage exits through a 9/16-18 UNF-2B port, with fluid limited to 30 psi (2 bar) so seals are not overstressed. Remote control is supported by a pilot line that attaches to a 7/16-20 UNF-2B port and can carry up to 5100 psi (350 bar) for fast swashplate positioning.
Technical Specifications
Displacement
18 cm³/rev
Drain Port Max Pressure
30 psi (2 bar)
Drain Port Size
9/16-18 UNF-2B
Flow At 1800 Rpm
8.5 gpm (32 L/min)
Max Speed At Reduced Displacement
3900 rpm
Max Speed At Vg Max
3300 rpm
Max Torque At 280 Bar
59 lb-ft (80 Nm)
Maximum Pressure
5100 psi (350 bar)
Nominal Pressure
4100 psi (280 bar)
Pilot Port Max Pressure
5100 psi (350 bar)
Pilot Port Size
7/16-20 UNF-2B
Rotation Direction
Clockwise (R)
Suction Port Max Pressure
145 psi (10 bar)
Suction Port Size
1 in (ISO 6162-1)
Weight (without Through Drive)
28 lb (12.9 kg)
Working Port Size
3/4 in (ISO 6162-1)
1620 Old Apex Road
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