Bosch Rexroth | AA10VG28HD3D110R-NSC60F045D-S
AA10VG28HD3D1/10R-NSC60F045D-S
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The AA10VG28HD3D1/10R-NSC60F045D-S variable piston pump belongs to the A10VG Variable Piston Pumps series and is manufactured by Bosch Rexroth. It supplies closed-circuit hydrostatic transmissions with a displacement of 28 cm³ per revolution, allowing predictable volume delivery for mobile or industrial hydraulic drives. The unit operates from 500 rpm up to a continuous 3 900 rpm, and intermittent duty is permitted to 4 500 rpm for brief load peaks. A nominal pressure of 300 bar defines the continuous working limit, while a 350 bar peak rating accommodates short pressure spikes without damage. When system pressure reaches 300 bar, the drive shaft resists 134 N·m of torque, and mechanical parts are sized for a maximum input torque of 314 N·m to keep stress within safe margins. This pressure-balanced design delivers the required flow while maintaining efficiency across the entire speed range.
At maximum displacement the pump supplies 109 L/min, supporting medium-capacity circuits such as propel drives or swing functions. An internal boost stage moves 6.1 cm³ per revolution to maintain case filling and prevent cavitation when suction conditions are poor. The rotating group tolerates up to 987 N of axial force and 2 500 N of radial force at a 17.5 mm overhung distance, so belt or gear loads can be transmitted directly without extra bearing blocks. The hydraulic displacement control starts to increase swashplate angle at 6 bar and reaches full stroke at 16 bar, providing stable adjustment with minimal pilot energy. For through-drive arrangements, the shaft can pass 220 N·m to a secondary pump, enabling tandem layouts without oversized couplings. A tandem assembly with two 28 cm³ sections results in an overall length of 435.5 mm, which eases mounting in compact power packs while still allowing straightforward service access.
Technical Specifications
Axial Force Max
987 N
Boost Pump Displacement
6.1 cm³/rev
Displacement (per Pump)
28 cm³/rev
Hd Control End Pressure
16 bar
Hd Control Start Pressure
6 bar
Input Torque Max
314 Nm
Max Flow Per Pump
109 l/min
Max Speed (continuous)
3900 rpm
Max Speed (intermittent)
4500 rpm
Min Speed
500 rpm
Nominal Pressure
300 bar
Overall Length (28+28 Tandem)
435.5 mm
Peak Pressure
350 bar
Radial Force Max (a=17.5 Mm)
2500 N
Through-drive Torque Max
220 Nm
Torque At 300 Bar
134 Nm
1620 Old Apex Road
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