Bosch Rexroth | 4WE6D73-6XOFEG96N9K4A12
4WE6D73-6X/OFEG96N9K4/A12
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The 4WE6D73-6X/OFEG96N9K4/A12 valve is built by Bosch Rexroth for the WE Directional Spool Valves series and directs hydraulic flow to actuators in automated machinery. It conforms to the ISO 4401-03-02-0-05 porting pattern so it mounts on standard NG6 subplates. A maximum operating pressure of 350 bar at ports A, B, and P allows control of high-pressure circuits, while the tank port withstands up to 210 bar to accommodate back-pressure conditions. The hydraulic passages handle up to 80 l/min direct current flow, ensuring adequate supply for medium-size cylinders and motors. Internal cleanliness must not exceed ISO 4406 class 20/18/15 to protect the precision spool. The OF detent keeps the spool in its last commanded position without a spring return, and a concealed N9 manual override lets maintenance personnel shift the spool during testing without exposing the mechanism. With two solenoids installed, the assembly weighs 1.95 kg, contributing minimal load to manifold structures.
Electrical performance is based on a 96 V DC coil that draws 0.33 A, giving a nominal power demand of 30 W for continuous actuation. A ±10% voltage tolerance lets the coil accept common supply variations without losing force, and the 100% ED duty cycle permits uninterrupted energization in applications requiring sustained holding. The K4 individual connection style simplifies wiring by providing a dedicated plug for each solenoid. Coil insulation supports a surface temperature up to 120 °C so thermal limits are not reached during prolonged operation. The A12 switching time increase option extends energization duration to produce smoother spool movement when rapid shifts might disturb the circuit.
Technical Specifications
Cleanliness Class Iso 4406 (c)
20/18/15
Coil Surface Temperature Max
120 °C
Detent Type
OF (Without Spring Return)
Duty Cycle
100% ED
Electrical Connection
K4 (Individual)
Manual Override
Concealed (N9)
Max Flow (dc)
80 l/min
Max Operating Pressure (a/b/p)
350 bar
Max Tank Port Pressure (dc)
210 bar
Nominal Power
30 W
Nominal Voltage
96 V DC
Porting Pattern
ISO 4401-03-02-0-05
Rated Current (96 V)
0.33 A
Switching Time Increase
A12
Voltage Tolerance
±10%
Weight (two Solenoids)
1.95 kg
1620 Old Apex Road
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