Bosch Rexroth | AA10VO140DFR131R-PSD62KA5-S1106
AA10VO140DFR1/31R-PSD62KA5-S1106
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The AA10VO140DFR1/31R-PSD62KA5-S1106 variable pump belongs to the A10VSO Variable Pumps series from Bosch Rexroth and serves as the adjustable flow source in closed-circuit hydraulic automation. It delivers a displacement of 140 cm³ per revolution so system volume can be tuned to actuator demand. At maximum displacement and 1,800 rpm—the highest speed allowed at this setting—the pump supplies 66.6 gpm, supporting presses and mobile machinery that require steady flow. Continuous operation is limited to 280 bar, while brief excursions to 350 bar are permitted for pressure spikes. The DFR1 compensator is preset for a 200 psi pressure differential, causing the swashplate to reduce stroke when line pressure rises above that threshold. Case drain pressure must remain below 29 psi absolute to protect shaft seals. At 280 bar and 1,800 rpm the drive must overcome 453 lb-ft of torque, and the pressure outlet is sized to SAE J518 1 1/4 in so standard flanges can be fitted without adapters.
The pump can rotate up to 2,100 rpm when displacement is dialed back, giving extra flow capacity during rapid duty cycles. Drive couplings and gearboxes must tolerate 875 lb-ft of input torque to prevent spline damage on cold starts. Power demand reaches 158 hp at 1,800 rpm and 280 bar, a value used when selecting an electric motor or diesel engine. Flow variation between DFR and DFR1 regulators stays within 1.60 gpm, minimizing cylinder speed fluctuations. A rotating inertia of 0.574 lb-ft² reduces acceleration load on transmission components, while lateral belt tension should not exceed an overhang moment of 3,319 lb-ft to keep bearings within their load zone. Inlet oil is drawn through an SAE J518 2 1/2 in suction port that maintains low velocity and resists cavitation.
Technical Specifications
Case Drain Pressure Max
29 psi (2 bar) abs
Dfr1 Delta-p Setting
200 psi (14 bar)
Displacement
140 cm3/rev (8.54 in3/rev)
Flow At 1800 Rpm (vg Max)
66.6 gpm (252 L/min)
Max Flow Deviation (dfr/dfr1)
1.60 gpm (6.0 L/min)
Max Permissible Input Torque (k)
875 lb-ft (1186 Nm)
Max Speed At Vg < Vg Max
2100 rpm
Max Speed At Vg Max
1800 rpm
Moment Of Inertia (drive Axis)
0.574 lb-ft2
Nominal Pressure
280 bar (4000 psi)
Peak Pressure
350 bar (5100 psi)
Permissible Overhang Moment
3319 lb-ft (4500 Nm)
Power At 1800 Rpm, 280 Bar
158 HP (118 kW)
Pressure Port Size
SAE J518 1 1/4 in
Suction Port Size
SAE J518 2 1/2 in
Torque At 280 Bar (vg Max)
453 lb-ft (623 Nm)
1620 Old Apex Road
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