Bosch Rexroth | AA10VSO140DFR131R-PKD62KA5-S1106
AA10VSO140DFR1/31R-PKD62KA5-S1106
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The AA10VSO140DFR1/31R-PKD62KA5-S1106 is produced by Bosch Rexroth within the A10VSO Variable Pumps series. It serves as an axial piston unit for hydraulic automation where variable displacement supports load-responsive circuits. A geometric displacement of 140 cm³ per revolution defines the maximum volume pushed per shaft turn, and this yields 66.6 gallons per minute when the shaft runs at 1800 rpm with the displacement set to maximum. The same displacement setting limits shaft speed to 1800 rpm to keep inlet conditions stable. The nominal pressure rating is 280 bar so the pump can operate continuously in medium-pressure systems without fatigue. When system pressure reaches 100 bar at full displacement, the drive must supply 164 pound-feet of torque to maintain rotation. Fluid enters through a SAE J518 2 ½ in suction port that minimizes flow velocity, while a SAE J518 1 ¼ in pressure port delivers the outlet stream to downstream components. Installation is handled with an SAE J744 152-4 (D) mounting flange that matches common diesel engine bell housings.
System reserve is provided by a maximum pressure capability of 350 bar, allowing short overload events without structural damage. When the displacement is reduced, the shaft can reach 2100 rpm so smaller flow demands can be met with higher speed instead of full stroke. The case drain circuit must not exceed 29 psi absolute, protecting shaft seals from excess back pressure. A DFR1 differential pressure setting of 200 psi governs the compensator to trim displacement in response to load, and the DFR1 control keeps flow deviation within 1.60 gallons per minute for steady actuator motion. From zero stroke the pistons advance to 280 bar in 130 milliseconds, enabling quick pressure rise during machine cycles. At 280 bar and maximum displacement, required drive torque climbs to 453 pound-feet, a figure important for motor sizing. Dry weight is 132 pounds so maintenance crews can handle the unit with standard lifting equipment.
Technical Specifications
Case Drain Pressure (abs) Max
29 psi
Dfr1 Differential Pressure Setting
200 psi
Dfr1 Flow Deviation Max
1.60 gpm
Dfr1 Stroking Time To 280 Bar
130 ms
Flow At 1800 Rpm (vg Max)
66.6 gpm
Geometric Displacement
140 cm³/rev
Max Speed (at Reduced Vg)
2100 rpm
Maximum Pressure
350 bar
Maximum Speed (at Vg Max)
1800 rpm
Mounting Flange
SAE J744 152-4 (D)
Nominal Pressure
280 bar
Pressure Port
SAE J518 1 1/4 in
Suction Port
SAE J518 2 1/2 in
Torque At 100 Bar (vg Max)
164 lb-ft
Torque At 280 Bar (vg Max)
453 lb-ft
Weight Without Fluid
132 lb
1620 Old Apex Road
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