Bosch Rexroth | H-4WEH25E6X6EG24N9S2K4QMBG24
H-4WEH25E6X/6EG24N9S2K4QMBG24
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The H-4WEH25E6X/6EG24N9S2K4QMBG24 directional spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for hydraulic automation systems that need dependable fluid routing. The valve is built in size NG25, and its 4/3-way spool arrangement directs flow between two service lines while offering a neutral position. An energizing voltage of 24 V DC drives the solenoids to shift the spool, and internal pilot oil supply designated X eliminates external pilot piping. Electrical connection is achieved through a DIN EN 175301-803 form K4 plug for straightforward wiring. The unit sustains up to 350 bar at ports A and B and passes a maximum flow of 650 l/min to support high-capacity circuits. A concealed manual override coded N9 permits local actuation without protruding hardware, and spool position monitoring option b (QMBG24) sends a confirmation signal to the control system.
The pilot stage tolerates pressures up to 250 bar, while port T is limited to 250 bar and the external drain port Y endures 210 bar to protect return lines. A minimum pilot pressure of 13 bar is required for reliable spring-centering after coil de-energization. Installation onto a manifold block uses six M12 × 60 screws conforming to ISO 4762, and each screw must be tightened to 100 Nm to maintain sealing integrity. The fully assembled valve with two solenoids weighs 19.0 kg, a factor to consider for mounting surface load calculations.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (e, 350 Bar)
650 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (external, Dc)
210 bar
Min Pilot Pressure (spring-centered)
13 bar
Mounting Screws
6x M12 x 60 (ISO 4762)
Pilot Oil Supply
Internal (X)
Screw Tightening Torque
100 Nm
Size
NG25
Solenoid Voltage
24 V DC
Spool Position Monitoring
b (QMBG24)
Way Configuration
4/3-way
Weight (2 Solenoids)
19.0 kg
1620 Old Apex Road
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