Bosch Rexroth | 4WEH10L4X6EW110N9K4
4WEH10L4X/6EW110N9K4
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The 4WEH10L4X/6EW110N9K4 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It regulates oil flow in hydraulic automation circuits by shifting a pilot-operated spool to predefined positions. The valve is sized for NG10 manifolds and matches the ISO 4401-05-05-0-05 port pattern, so it fits directly on a subplate mounting interface. Electrical connection is handled by a DIN EN 175301-803 form-K4 plug, while a 6E pilot control stage actuates the main spool. A concealed N9 manual override allows manual positioning when coils are de-energized, and the complete assembly weighs 6.8 kg with two solenoids installed. Its mean time to dangerous failure is rated at 100 years, supporting long service life in production machinery.
System performance is defined by a maximum flow of 160 l/min through spool type L at nominal size 10, enabling rapid movement of medium-capacity actuators. Supply port P and work ports A and B tolerate pressures up to 280 bar, and port T carries the same 280 bar rating so back-pressure can be applied in return lines. The pilot circuit accepts 250 bar and discharges to a return line that may reach 160 bar, allowing versatile remote control arrangements. Reliable shifting is ensured by a minimum pilot pressure of 12 bar on spring-centered versions, a fastest-switching pilot flow of 35 l/min, and a pilot chamber volume of 2.04 cm³, all of which support predictable response times in automated hydraulic systems.
Technical Specifications
Connector Standard
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (spool L, Ng10)
160 l/min
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y, Ac)
160 bar
Max Pressure (p, A, B)
280 bar
Max Pressure (port T)
280 bar
Min Pilot Pressure (spring-centered)
12 bar
Mounting Type
Subplate Mounting
Mttfd (type Weh)
100 years
Nominal Size (ng)
10
Pilot Control Valve
6E
Pilot Flow (fastest Switching)
35 l/min
Pilot Volume (3-pos, Spring-centered)
2.04 cm³
Porting Pattern
ISO 4401-05-05-0-05
Weight (two Solenoids)
6.8 kg
1620 Old Apex Road
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