Bosch Rexroth | 4WEH10D4X6EW110N9DK23L
4WEH10D4X/6EW110N9DK23L
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The 4WEH10D4X/6EW110N9DK23L directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series and serves to route pressure fluid in automated hydraulic circuits. It is a 4-way unit built in size NG10, so it fits mid-size manifolds without flow restriction. An ISO 4401-05-05-0-05 mounting pattern aligns the body on a subplate, and screws tightened to 12.5 Nm hold the assembly against vibration. Pilot oil arrives through an external X connection and leaves by an external Y connection, keeping the main flow paths clear. The spool shifts with a pilot volume of 4.08 cm³, and a minimum pilot pressure of 10 bar is required to move it reliably. When configured with symbol D the valve passes up to 160 l/min, while ports P, A, and B withstand 280 bar to suit high-pressure drives.
Port T also tolerates 280 bar, allowing full system pressure to discharge to tank when circuit design demands it, whereas the pilot stage is limited to 250 bar to protect the solenoid assembly. The external Y return connection endures 160 bar so pilot back-pressure does not damage seals. System fluid should meet ISO 4406 (c) 20/18/15 cleanliness to avoid spool seizure and extend service life. With a mass of 6.4 kg for the single-solenoid version, one technician can handle installation, and the weight helps damp hydraulic shock. A mean time to dangerous failure of 100 years supports use in safety-related machinery where dependable directional control over long operating periods is necessary.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Max Flow (symbol D)
160 l/min
Max Pilot Pressure
250 bar
Max Pressure (port T)
280 bar
Max Pressure (port Y, External, Ac)
160 bar
Max Pressure (ports P, A, B)
280 bar
Min Pilot Pressure (2-spool)
10 bar
Mounting Pattern
ISO 4401-05-05-0-05
Mounting Screw Torque
12.5 Nm
Mttfd
100 years
Pilot Oil Return
Y external
Pilot Oil Supply
X external
Pilot Volume Per Switch (2-spool)
4.08 cm3
Size
NG10
Valve Type
4-way
Weight (1 Solenoid)
6.4 kg
1620 Old Apex Road
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