Bosch Rexroth | H-4WEH25H6X6EW110N9S2K4V
H-4WEH25H6X/6EW110N9S2K4/V
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The H-4WEH25H6X/6EW110N9S2K4/V valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation circuits. It is actuated electro-hydraulically and built in size NG25, providing a 4-way flow path for pressure and return lines. Installation is on an ISO 4401-08-08-0-05 subplate. External pilot oil enters through port X and returns through port Y, keeping control oil separate from the main flow. The main spool is returned hydraulically, and a concealed manual override allows local shifting without exposing the mechanism.
Electrical power reaches the solenoid through a DIN EN 175301-803 form K4 connector. FKM seals tolerate fluid from –15 °C up to 80 °C, enabling operation with common mineral oils within that range. Ports P, A, and B withstand 350 bar, while the pilot stage accepts 250 bar. Switching time can be adjusted with the S2 discharge control to match system response needs. The valve requires hydraulic media filtered to ISO 4406 class 20/18/15 to avoid wear and sticking. These limits ensure reliable service in high-pressure industrial installations.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Main Spool Return
Hydraulic
Manual Override
Concealed
Max Fluid Temperature
+80 °C (FKM)
Max Pilot Pressure
250 bar
Max Pressure P/a/b
350 bar
Min Fluid Temperature
-15 °C (FKM)
Mounting Interface
ISO 4401-08-08-0-05
Pilot Oil Return
External (Y)
Pilot Oil Supply
External (X)
Seal Material
FKM
Size
NG25
Switching Time Adjustment
Discharge Control (S2)
Way Configuration
4-Way
1620 Old Apex Road
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