Bosch Rexroth | AA10VSO140DRG31R-PKD62K08
AA10VSO140DRG/31R-PKD62K08
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The AA10VSO140DRG/31R-PKD62K08 pump belongs to the A10VSO Variable Pumps series from Bosch Rexroth and supplies hydraulic power in automated machinery where flow must adapt to changing load demands. Its displacement of 140 cm³ per revolution establishes the volume of fluid the unit can deliver per shaft turn, supporting high output circuits. A nominal pressure rating of 280 bar defines the continuous working limit for components downstream, while a maximum pressure rating of 350 bar provides a safety margin for transient spikes. When driven at 1800 rpm and set to maximum displacement, the pump delivers 66.6 gallons per minute, giving designers a predictable flow reference. The maximum permissible speed at full displacement is 1800 rpm to keep piston loads within design limits, but the shaft may reach 2100 rpm when the swashplate is set below the full stroke, allowing faster cycles. Clockwise shaft rotation must match the prime mover to maintain correct internal lubrication, and an absolute suction pressure of at least 0.8 bar prevents cavitation at the inlet.
Installation details further tailor the pump to system layouts. A SAE J744 152-4 (D) mounting flange aligns the housing with standard diesel or electric motor adapters for compact assembly. High-pressure flow exits through a SAE J518 1 1/4-inch pressure port, giving a rigid connection point for main circuit piping, while the suction side uses a larger SAE J518 2 1/2-inch port to reduce velocity and inlet losses. Case leakage is routed through an ISO 11926 1 1/16-12 UN-2B drain port, and an absolute drain pressure limit of 2 bar protects the shaft seal from excessive back-pressure. The control system interfaces through a 9/16-18 UNF-2B pilot port so the DRG pressure compensator can receive external signals. Within that compensator, a differential setting of 20 bar establishes the target pressure above load demand before flow is reduced, and a maximum hysteresis of 45 psi indicates how closely the mechanism repeats that setting during cycling.
Technical Specifications
Case Drain Port Thread
ISO 11926 1 1/16-12 UN-2B
Displacement
140 cm3/rev (8.54 in3)
Drg Differential Pressure
20 bar (290 psi)
Drg Hysteresis (max)
45 psi
Flow At 1800 Rpm (vg Max)
66.6 gpm (252 L/min)
Max Case Drain Pressure (abs)
2 bar (29 psi)
Max Speed (vg Max)
1800 rpm
Max Speed (vg<vgmax)
2100 rpm
Maximum Pressure
350 bar (5100 psi)
Min Suction Pressure (abs)
0.8 bar (12 psi)
Mounting Flange
SAE J744 152-4 (D)
Nominal Pressure
280 bar (4000 psi)
Pilot Port X Thread
9/16-18 UNF-2B
Pressure Port B Size
SAE J518 1 1/4 in
Rotation
Clockwise
Suction Port S Size
SAE J518 2 1/2 in
1620 Old Apex Road
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