SYDFEE-2X/028R-PPA12N00-0000-A2A0CXX

The SYDFEE-2X/028R-PPA12N00-0000-A2A0CXX is a hydraulic control unit built by Bosch Rexroth within the SYD Hydraulic Control Systems series. It serves as a pump module for automated hydraulic circuits where stable pressure and flow are needed. The unit has a displacement of 28 cm³ per revolution, so each turn of the shaft moves a fixed oil volume into the circuit. A permitted maximum speed of 3000 rpm allows fast cycling applications, while the minimum stable speed of 250 rpm supports low-flow tuning during standby modes. When operated at the nominal speed, the module can deliver up to 84 l/min, matching medium-size actuator groups. A maximum operating pressure of 280 bar lets the system drive cylinders or motors that require high force. The power draw reaches 39 kW at that pressure and speed, which defines the electric or engine drive rating. Maximum torque at full pressure is limited to 125 Nm, preventing overload of the coupling and gearbox. Clockwise rotation is specified to align the shaft with common prime movers, and the 22 mm drive shaft diameter provides the mechanical interface dimension.

An ISO 2-hole flange with a 100 mm pitch circle is used for mounting, so the housing mates directly with standard pump sockets. The central connector X1 is a 12-pole plug that routes command, sensor, and solenoid lines to the internal control elements. Internal electronics and valves are supplied with 24 VDC, making it compatible with typical machine control buses. Mineral oil in the HL or HLP category is required as the hydraulic fluid to maintain seal compatibility and lubrication. The housing filling quantity is 0.7 l, giving a baseline volume that prevents aeration during initial startup. A permissible axial force of 1000 N on the shaft protects bearings when belt tension or thrust loads are present. The assembly weighs 20.5 kg without a through-drive, so lifting brackets or supports must be rated accordingly for installation.