Bosch Rexroth | AA10VSO28DRG31R-VKC62N00
AA10VSO28DRG/31R-VKC62N00
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The AA10VSO28DRG/31R-VKC62N00 variable pump is produced by Bosch Rexroth as part of the A10VSO Variable Pumps series and supplies hydraulic actuators with speed-dependent flow for automation circuits. The geometric displacement of 28 cm³ per revolution sets the volume moved by each shaft turn, while a flow of 13.3 gpm at 1800 rpm provides typical output for medium duty service. When operated at maximum displacement the unit can spin at 3000 rpm, defining the highest full-stroke speed. Clockwise rotation matches common engine take-offs. A nominal pressure rating of 280 bar supports continuous duty, and a torque demand of 33 lb-ft at 100 bar helps size the prime mover. The parallel keyed shaft delivers positive power transmission, and a rotating inertia of 0.040 lb-ft² allows quick acceleration and deceleration.
At rated conditions the pump can supply 22 gpm with displacement set to Vg max, giving extra flow margin for transient loads. If displacement is reduced, the permissible speed rises to 3600 rpm so smaller frames can still achieve high flow through speed control. A maximum pressure capacity of 350 bar defines the short-term peak limit, and a torque requirement of 92 lb-ft at 280 bar indicates the mechanical load during high pressure events. The internal case volume of 0.185 gal stores leakage oil for bearing lubrication, and a 20 bar differential pressure setting at the DRG port supports remote load sensing. FKM sealing material resists high temperature hydraulic fluids, and the pump is supplied without a through drive to simplify mounting when no secondary pump is needed.
Technical Specifications
Case Volume
0.185 gal (0.7 L)
Direction Of Rotation
Clockwise
Drg Differential Pressure Setting
20 bar (290 psi)
Drive Shaft Type
Parallel Keyed Shaft (K)
Flow At 1800 Rpm
13.3 gpm (50 L/min)
Flow At Nnom, Vg Max
22 gpm (84 L/min)
Geometric Displacement
28 cm3/rev (1.71 in3/rev)
Max Speed At Reduced Vg
3600 rpm
Max Speed At Vg Max
3000 rpm
Maximum Pressure
350 bar (5100 psi)
Moment Of Inertia (jtw)
0.040 lb-ft2 (0.0017 kgm2)
Nominal Pressure
280 bar (4100 psi)
Sealing Material
FKM
Through Drive
Without (N00)
Torque At 100 Bar
33 lb-ft (45 Nm)
Torque At 280 Bar
92 lb-ft (125 Nm)
1620 Old Apex Road
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