Bosch Rexroth | H-4WEH25U10B6X6EW110K4QM0G24
H-4WEH25U10B6X/6EW110K4QM0G24
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The H-4WEH25U10B6X/6EW110K4QM0G24 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. Designed for hydraulic automation circuits, it uses electro-hydraulic actuation to shift the spool with minimal pilot flow while accommodating system commands from a 24 V DC monitoring supply. The component follows the ISO 4401-08-08-0-05 porting pattern and has a nominal size of NG25, enabling standardized manifold installation in medium-flow lines. Its four-way flow path allows simultaneous control of pressure and return lines in servo loops, and spool position is monitored in the rest position so controllers can verify a safe state before energizing the pilot stage. The high-power 6E pilot valve delivers the force needed to shift under load, while ports p, a, and b withstand operating pressures up to 350 bar. An external Y return channel tolerates up to 160 bar in AC driven systems, maintaining consistent pilot drainage during rapid cycling.
Subplate mounting streamlines integration, and six mounting screws secure the body to the manifold block. The specified fasteners are M12 × 60 and must be tightened to 100 N·m to preserve the seal integrity against full line pressure. Pilot supply pressure is limited to 250 bar, providing a controlled force margin over the main stage without overstressing the pilot circuitry. Electrical connection is made through a DIN EN 175301-803 K4 plug, giving a protected interface for coil wiring and facilitating quick replacement. The valve’s four-way configuration pairs with the NG25 flow size to manage directional changes in presses, injection machines, and similar equipment where precise electro-hydraulic control is required.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Max Operating Pressure (p,a,b)
350 bar
Max Pilot Pressure
250 bar
Monitoring Supply Voltage
24 VDC
Mounting Screw Quantity
6
Mounting Screw Size
M12 x 60
Mounting Screw Torque
100 Nm
Mounting Type
Subplate Mounting
Nominal Size
NG25
Pilot Return Y Max Pressure (external)
160 bar (AC)
Pilot Valve Type
6E High-Power
Porting Pattern
ISO 4401-08-08-0-05
Spool Position Monitoring
Rest Position
Way Configuration
4-Way
1620 Old Apex Road
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