Bosch Rexroth | 4WE6D73-6XEG96NK4A12
4WE6D73-6X/EG96NK4/A12
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The 4WE6D73-6X/EG96NK4/A12 directional spool valve belongs to the WE Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation systems that require consistent on-off flow control. It can stay energized continuously because its duty cycle is 100%, making it suitable for long production shifts. Installation follows the ISO 4401-03-02-0-05 mounting interface so it can be swapped with other size-03 valve bodies without manifold changes. The solenoid is designed for a rated voltage of 96 V DC, draws a rated current of 0.33 A, and consumes a nominal power of 30 W, giving predictable electrical load on the machine power supply. A voltage tolerance of ±10% lets the coil operate within acceptable limits when supply levels fluctuate. Ports A, B, and P accept a maximum operating pressure of 350 bar, and the flow path accommodates up to 80 l/min in direct current service, allowing the valve to handle medium-size actuators without excessive pressure loss.
The valve functions in ambient temperatures from ‑20 °C to +50 °C so it can be installed in unconditioned equipment rooms, while the hydraulic fluid may range from ‑20 °C to +80 °C to match common mineral oils used in mobile and industrial circuits. Fluid cleanliness must reach ISO 4406 class 20/18/15 to prevent spool wear and sticking. A permitted switch-off over-voltage of 500 V protects the coil insulation when the circuit is de-energized, and a maximum switching frequency of 4.2 cycles per second supports moderate duty cycling in automation sequences. Return flow is limited to a tank port pressure of 210 bar, ensuring that back-pressure does not hinder spool movement or raise system temperature.
Technical Specifications
Duty Cycle
100%
Fluid Cleanliness (iso 4406)
20/18/15
Max Ambient Temperature
+50 °C
Max Flow (dc)
80 l/min
Max Fluid Temperature
+80 °C
Max Operating Pressure (a/b/p)
350 bar
Max Switch-off Overvoltage
500 V
Max Switching Frequency (dc)
4.2 1/s
Max Tank Port Pressure (t)
210 bar
Min Ambient Temperature
-20 °C
Min Fluid Temperature
-20 °C
Mounting Interface
ISO 4401-03-02-0-05
Nominal Power
30 W
Rated Current
0.33 A
Rated Voltage
96 V DC
Voltage Tolerance
±10%
1620 Old Apex Road
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