4WRAB6E06-1X/G12N9K4/MR

The 4WRAB6E06-1X/G12N9K4/MR valve is manufactured by Bosch Rexroth for the 4WRA Proportional Directional Valves series. It employs an electrohydraulic actuator to regulate flow and direction in automated hydraulic circuits. The solenoid is energized by a 12 V DC supply voltage, enabling integration with low-voltage control systems. A rated power draw of 30 W defines the electrical load that must be provided by the machine controller. Coil resistance is 4.8 Ω at 20 °C and rises to 7.2 Ω at 50 °C, data that assists in verifying current limits as temperature changes. The winding inductance of 86 mH smooths current rise, which supports stable spool movement during step changes in command signal. The valve supports a continuous duty cycle, so it can remain energized without enforced cooling pauses. Closed-loop performance is shaped by a −3 dB frequency response of 24 Hz, indicating how quickly it follows modulation inputs. Electrical connection is made through a DIN 43650 interface for standardized plug-in wiring.

Hydraulic mounting and porting information is provided to simplify manifold design. The unit is built to the nominal size 6 (D03), and its porting pattern follows ISO 4401-03-02-0-05, ensuring interchangeability with common CETOP 03 subplates. It handles operating pressures up to 350 bar on ports P, A, and B, while the tank port tolerates 210 bar, so designers can specify accumulators and pumps accordingly. Maximum flow capacity is 30 l/min, defining the upper limit for circuit throughput without exceeding rated spool forces. An IP65 protection class shields the coil and connector from dust ingress and low-pressure water jets, allowing installation in typical industrial wash-down zones. Sealing elements are made from NBR, coded MR, which suits mineral oil media across the standard temperature range. A covered mechanical override, identified by code N9, lets maintenance staff shift the spool manually when electrical control is unavailable, completing the functional features required for reliable machine operation.