Bosch Rexroth | 4WEH10HY4X6EW110N9K4
4WEH10HY4X/6EW110N9K4
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The 4WEH10HY4X/6EW110N9K4 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is used to route pressurized fluid in hydraulic automation. It is built in size NG10 and mounts on a subplate that follows porting pattern ISO 4401-05-05-0-05. Two hydraulic end positions allow simple on-off flow control, and a hydraulic spool return resets the element without springs. Pilot oil is supplied externally at port X and returns externally at port Y so the main gallery remains isolated from control lines. Reliable shifting starts at a pilot pressure of 7 bar, while a ceiling of 250 bar protects the pilot stage. Working ports A and B withstand up to 350 bar, enabling the valve to operate in high-pressure circuits.
The valve supports a maximum flow of 160 l/min for symbol Hy, permitting medium-capacity actuators to cycle without excessive pressure drop. Hydraulic fluid with a viscosity between 2.8 and 500 mm²/s and a temperature from −20 to +80 °C can be used, ensuring compatibility with common mineral oils. The pilot solenoid is wound for 110 V AC at 50 or 60 Hz, and connection is made through a DIN EN 175301-803 K4 plug. A concealed manual override tagged N9 lets maintenance staff shift the spool when the solenoid circuit is de-energized. System cleanliness must reach ISO 4406 code 20/18/15 to limit wear and sticking. These features combine to deliver consistent directional control in automated hydraulic systems.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Control Spool Return
Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Hydraulic Fluid Temperature (nbr)
−20 to +80 °C
Manual Override
Concealed (N9)
Max Flow (ng10, Symbol Hy)
160 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-pos Hydraulic)
7 bar
Pilot Oil Return
External (Y)
Pilot Oil Supply
External (X)
Pilot Valve Coil Voltage
110 V AC (50/60 Hz)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Switching Positions
2 (Hydraulic End)
Viscosity Range
2.8 to 500 mm²/s
1620 Old Apex Road
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