SYDFEE-2X/071R-PRA12KD5-0479-C2A0VXX-005

The SYDFEE-2X/071R-PRA12KD5-0479-C2A0VXX-005 is a hydraulic control unit produced by Bosch Rexroth for the SYD Hydraulic Control Systems series. It is intended to regulate pump displacement and circuit pressure in automated power transmissions. The unit provides a displacement of 71 cm³, giving a volumetric output proportional to shaft speed for medium-size actuator groups. A clockwise rotation direction aligns it with standard prime movers in mobile or industrial machinery. When run at its rated volume setting, the controller allows a maximum flow of 156 l/min to feed downstream valves without cavitation. The assembly tolerates operating pressures up to 280 bar so cylinders and motors can generate high force levels. During full load it supports shaft speeds up to 2200 rpm and can transmit 316 Nm of torque at 280 bar, making it suitable for continuous duty cycles. External pilot oil supply keeps the servo stage isolated from main line pressure for stable response, while mineral oil in HL or HLP classes ensures compatible lubrication and sealing.

Mechanical connection is handled by an ISO two-hole flange with a 125 mm pitch, and the through-drive is centered to ISO 125 dimensions to couple with A10VSO.31 NG71/100 pumps for tandem arrangements. A four-notch control spool is fitted to achieve precise metering steps during swash-plate adjustment. The electronics are folded 90 degrees toward the subplate so wiring can be routed inside compact manifolds. Port B and service ports use opposing SAE faces with metric threads to simplify hose orientation in confined spaces. Command pressure is introduced as a 0–10 V signal at connector X1, giving proportional control from a PLC or analog card. The enclosure meets IP65, keeping dust and water jets out of the electronic cavity in outdoor installations. Together these features create a robust actuator interface that integrates quickly into closed-loop hydraulic systems.