Bosch Rexroth | 4WEH10G4X6EW110N9TK4
4WEH10G4X/6EW110N9TK4
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The 4WEH10G4X/6EW110N9TK4 is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series. The unit directs hydraulic flow in automated machinery where remote electrical control is required. It is built in size NG10, establishing port spacing and envelope dimensions typical for mid-frame manifolds. A 4-way channel arrangement provides separate pressure, tank, and dual actuator lines. The G-type spool defines the metering geometry for predictable flow rates. Three discrete spool positions allow extension, retraction, and neutral functions. Springs return the main spool to center when the pilot signal is removed. Subplate mounting follows porting pattern ISO 4401-05-05-0-05 for interchangeability with standard bases. Coil wiring uses a DIN EN 175301-803 connector coded K4 for quick service. A concealed manual override labeled N9 lets technicians shift the spool during commissioning or a power loss, while system fluid must meet ISO 4406 class 20/18/15 to protect internal surfaces.
Ports P, A, and B tolerate operating pressures up to 280 bar so the valve fits high-pressure circuits. The pilot stage withstands 250 bar and requires at least 12 bar to switch reliably. Pilot oil is supplied externally through port X, isolating the control line from main pressure fluctuations. Return flow from the pilot section is routed internally to port T, reducing external plumbing. Mounting screws must be tightened to 12.5 Nm to maintain seal compression. The assembly weighs 6.8 kg, allowing a single technician to install it without hoists. These pressure limits and connection details help designers select compatible pumps and hoses. Adequate torque and controlled weight contribute to consistent gasket performance over long duty cycles. Together the pilot arrangement and pressure ratings ensure dependable spool movement throughout repetitive automation tasks.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
12 bar
Mounting Screw Torque
12.5 Nm
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Spool Positions
3
Spool Return (main Valve)
By Springs
Spool Type
G
Way Configuration
4-Way
Weight
6.8 kg
1620 Old Apex Road
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