Bosch Rexroth | 4WE6X7-6XEW24N9K4
4WE6X7-6X/EW24N9K4
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The 4WE6X7-6X/EW24N9K4 is part of the WE Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation systems that require dependable flow path control. It has a nominal size of 6, fixing the mounting envelope for manifold installations. Four main ports provide connections for pressure, tank, and two actuator lines. Compatibility with the NFPA D03 port pattern and the ISO 4401-03-02-0-05 layout allows straightforward mounting in both American and international subplates. A high-power wet-pin solenoid shifts the spool for rapid directional changes. Electrical power is supplied through a K4 plug built to DIN EN 175301-803, and the plug contains three poles arranged as two conductors plus protective earth for uncomplicated wiring. The assembly tolerates operating pressures up to 350 bar on ports P, A, and B without derating.
A concealed N9 manual override enables local spool actuation when electrical control is unavailable, and it can be used while tank pressure remains below 50 bar. The housing attains an IP65 protection class so the valve resists dust and low-pressure water jets in industrial environments. Hydraulic oil must reach cleanliness level ISO 4406 20/18/15 to maintain consistent performance of the precision-ground spool lands. During continuous duty the coil surface can reach 120 °C, which should be considered when locating adjacent components. Switch-off transients are limited to 500 V to protect peripheral electronics. The design achieves a mean time to dangerous failure of 300 years, supporting long service intervals in automated production cells.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Max Surface Temperature
120 °C
Connector Poles
3 (2+PE)
Electrical Connection
K4 (DIN EN 175301-803)
Main Ports
4
Manual Override
N9 (Concealed)
Manual Override Tank Pressure Max
50 bar
Max Operating Pressure (p/a/b)
350 bar
Maximum Switch-off Overvoltage
500 V
Mttfd
300 years
Nfpa Port Pattern
D03
Nominal Size
6
Porting Pattern
ISO 4401-03-02-0-05
Protection Class (k4)
IP65
Solenoid Type
High-Power Wet-Pin
1620 Old Apex Road
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