Bosch Rexroth | AA10VSO28DR31R-PKC61N00-SO43A-674-5
AA10VSO28DR/31R-PKC61N00 SO43A-674-5
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The AA10VSO28DR/31R-PKC61N00 SO43A-674-5 variable displacement pump is manufactured by Bosch Rexroth within the A10VSO Variable Pumps series. It supplies hydraulic energy in automation systems where controlled oil flow is needed. The unit has a displacement of 28 cm³ per revolution, and its intended direction of rotation is clockwise. At 1800 rpm it produces 13.3 gpm (50 L/min), while at the rated speed of 3000 rpm it reaches 22 gpm (84 L/min) for faster actuator cycles. The inlet can withstand 145 psi (10 bar) yet requires a minimum of 12 psi (0.8 bar) to avoid cavitation. A 3/4 in SAE flange under ISO 6162-1 is provided on the pressure port for standardized plumbing. Connections are confined to the main drive shaft because a through drive is not included. These features, combined with the flow characteristics, define the pump’s role in consistent fluid delivery.
For pressure regulation tasks the pump operates continuously at 4100 psi (280 bar) and can tolerate peaks of 5100 psi (350 bar) during transient events. Driving torque reaches 125 Nm at 280 bar, so couplings must be selected for that mechanical load. When the displacement is reduced the assembly may be run up to 3600 rpm, offering higher speed without excessive volumetric output. Case drain pressure must stay below 30 psi (2 bar) to protect housing seals and limit internal leakage. The drive shaft measures 0.8750 in in diameter, enabling direct pairing with standard motor adapters. Overall mass is 40 lb (18 kg), which allows one technician to position the pump during installation. Together these limits on pressure, speed, and torque outline safe operating zones for hydraulic circuits that depend on stable and repeatable flow.
Technical Specifications
Case Drain Pressure (abs Max)
30 psi (2 bar)
Direction Of Rotation
Clockwise
Displacement
28 cm³/rev
Flow At 1800 Rpm
13.3 gpm (50 L/min)
Flow At 3000 Rpm
22 gpm (84 L/min)
Max Inlet Pressure
145 psi (10 bar)
Max Speed (reduced Vg)
3600 rpm
Max Torque (at 280 Bar)
125 Nm
Min Inlet Pressure (abs)
12 psi (0.8 bar)
Nominal Pressure
4100 psi (280 bar)
Peak Pressure
5100 psi (350 bar)
Pressure Port Size
3/4 in SAE (ISO 6162-1)
Rated Speed (vg Max)
3000 rpm
Shaft Diameter
0.8750 in
Through Drive
None
Weight (n00)
40 lb (18 kg)
1620 Old Apex Road
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