Bosch Rexroth | 4WEH10EA4X6EW110N9EDAB10
4WEH10EA4X/6EW110N9EDA/B10
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The 4WEH10EA4X/6EW110N9EDA/B10 directional spool valve is part of the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation systems. It is built in NG10 size and carries spool symbol E to define the flow paths created when shifted. Actuation takes place on side A, and movement of the main spool is triggered by a 6E pilot control valve supplied with oil internally through port X. Pilot oil is returned externally via port Y to limit back pressure. A concealed manual override identified by code N9 allows technicians to shift the spool without electrical power. The valve mounts on subplates conforming to ISO 4401-05-05-0-05, and NBR seals provide compatibility with standard mineral hydraulic fluids.
The valve tolerates fluid cleanliness to ISO 4406 class 20/18/15, matching common filtration practices. It handles a maximum flow of 160 l/min, delivering adequate volume for medium-capacity actuators. Ports P, A, B, and T each endure up to 280 bar, while the pilot stage operates safely up to 250 bar and needs at least 12 bar to shift the spring-centered three-position spool. A throttle insert with a 1.0 mm orifice, labeled B10, sits in the pilot circuit to damp pressure spikes and smooth spool movement. These hydraulic limits let the valve perform consistent directional changes in machinery that demands reliable control under varying load conditions.
Technical Specifications
Actuating Side
A
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Flow (e, Ng10)
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Operating Pressure (t)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (3-pos Spring-centered)
12 bar
Mounting Interface
ISO 4401-05-05-0-05
Pilot Control Valve
6E
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (X)
Seal Material
NBR
Spool Symbol
E
Throttle Insert
Ø 1.0 mm (B10)
Valve Size
NG10
1620 Old Apex Road
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