Bosch Rexroth | SYDFEE-2X028R-PPA12N00-0000-A0B0CX3
SYDFEE-2X/028R-PPA12N00-0000-A0B0CX3
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The SYDFEE-2X/028R-PPA12N00-0000-A0B0CX3 unit is a hydraulic control component produced by Bosch Rexroth within the SYD Hydraulic Control Systems series. It serves as an electrically modulated pump element for automated hydraulic circuits where precise displacement adjustment is required. The fixed displacement is 28 cm³, allowing accurate metering of fluid with each revolution. A maximum operating pressure of 280 bar supports medium-pressure power transmission in machinery. When driven at 1500 rpm with the swashplate at maximum volume, the pump delivers 42 l/min of flow, and it can turn at up to 3600 rpm when the displacement is below the mechanical limit. Under a pressure differential of 280 bar the output shaft can supply 125 Nm of hydraulic torque to downstream loads. Electrical actuation relies on a nominal supply of 24 VDC with a steady control current of 0.6 A, and the rotating group presents a moment of inertia of 0.0017 kg·m² which limits acceleration demand on the prime mover.
The same model withstands a continuous flow of 84 l/min at nominal speed, ensuring reserve capacity for dynamic duty cycles. With the swashplate fully stroked the pump speed is limited to 3000 rpm to maintain volumetric efficiency. Mechanical loading is accommodated by a maximum axial force of 1000 N and a maximum radial force of 1200 N on the shaft bearings. The splined shaft can handle 225 Nm of drive torque, matching the transmission capabilities of common industrial gearboxes. Power input peaks at 20 kW when operating at 1500 rpm and rises to 39 kW at nominal speed under the same 280 bar pressure drop, enabling the unit to support large actuators without cavitation. The pump has a mass of 20.5 kg when no through-drive adapter is installed, which simplifies mounting in compact hydraulic power packs.
Technical Specifications
Displacement
28 cm3
Max Axial Force
1000 N
Max Drive Torque (splined Shaft R)
225 Nm
Max Flow (1500 Rpm, Vg Max)
42 l/min
Max Flow (nnom, Vg Max)
84 l/min
Max Operating Pressure
280 bar
Max Power (Δp 280 Bar, 1500 Rpm)
20 kW
Max Power (Δp 280 Bar, Nnom)
39 kW
Max Radial Force
1200 N
Max Speed (vg < Vg Max)
3600 rpm
Max Speed (vg Max)
3000 rpm
Max Torque (Δp 280 Bar)
125 Nm
Moment Of Inertia
0.0017 kgm2
Nominal Supply Voltage
24 VDC
Pump Mass (no Through-drive)
20.5 kg
Rated Current (static Control)
0.6 A
1620 Old Apex Road
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