Bosch Rexroth | A-A10VSO-71-DRS-32R-VPB22U00E-S2183
A A10VSO 71 DRS /32R-VPB22U00E -S2183
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The A A10VSO 71 DRS /32R-VPB22U00E-S2183 is a variable displacement axial piston pump built by Bosch Rexroth in the A10VSO Variable Pumps series. It supplies pressurized fluid for hydraulic automation where adjustable flow is required. The clockwise rotation matches drive layouts that turn the input shaft in that direction. A geometric displacement of 71 cm³ per revolution sets the volume moved each shaft turn. At 1800 rpm, the pump delivers 33.8 gpm, providing a fixed reference point for sizing circuits. Continuous operation is rated for 4,100 psi, so components must match that nominal pressure. When set to maximum displacement, the unit should not exceed 2,200 rpm, which preserves bearing life and limits heat. The recommended hydraulic medium is HLP mineral oil according to DIN 51524-2, ensuring correct viscosity and lubrication. Start-up is allowed down to −13 °F, which supports cold-weather commissioning. The mass of 78 lb without a through drive affects mounting hardware selection.
At 2,200 rpm, flow increases to 41.2 gpm, offering higher actuator speed when the drive permits rated speed. If the displacement is reduced below Vgmax, the shaft can reach 2,600 rpm to obtain further flow without surpassing power limits. The peak pressure capacity of 5,100 psi accommodates short load spikes that occur during rapid directional changes. Power demand reaches 98 hp at 2,200 rpm, so the prime mover must provide at least that output. The pump handles oil temperatures up to 230 °F, which maintains seal integrity during heavy-duty cycles. When system pressure is 280 bar, the drive transmits 233 lb-ft of torque to the shaft, and couplings must tolerate that load. The design accepts an axial thrust of 540 lbf and a radial load of 427 lbf at half the sealing diameter, allowing belt or gear drives within those limits.
Technical Specifications
Direction Of Rotation
Clockwise (R)
Displacement
71 cm³/rev (4.33 in³/rev)
Flow At 1800 Rpm
33.8 gpm (128 L/min)
Flow At 2200 Rpm
41.2 gpm (156 L/min)
Hydraulic Fluid
HLP Mineral Oil (DIN 51524-2)
Max Operating Temperature
+230 °F (+110 °C)
Max Power At 2200 Rpm
98 HP (73 kW)
Max Speed At Reduced Vg
2600 rpm
Max Speed At Vgmax
2200 rpm
Min Start Temperature
-13 °F (-25 °C)
Nominal Pressure
4100 psi (280 bar)
Peak Pressure
5100 psi (350 bar)
Permissible Axial Force
540 lbf (2400 N)
Permissible Radial Force At A/2
427 lbf (1900 N)
Torque At 280 Bar
233 lb-ft (316 Nm)
Weight Without Through Drive
78 lb (35.2 kg)
1620 Old Apex Road
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