Bosch Rexroth | H-4WEH25E6X6EW110N9ETS2K4B10D3V
H-4WEH25E6X/6EW110N9ETS2K4/B10D3V
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The H-4WEH25E6X/6EW110N9ETS2K4/B10D3V directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated machinery. It uses a 4-way configuration and fits the NG25 interface, providing three selectable spool positions for advance, retract, or neutral states. An E-profile spool guides the medium, and the housing follows the ISO 4401-08-08-0-05 porting pattern for standardized manifold mounting. The valve tolerates up to 350 bar system pressure and passes 650 l/min at that rating to suit high-flow circuits. Pilot oil is supplied and returned internally, allowing simpler plumbing, while the pilot stage accepts up to 250 bar and begins shifting reliably once 13 bar is achieved in spring-centered service.
A concealed N9 manual override lets technicians move the spool during setup or loss of power, and electrical actuation is handled through a K4 connector that matches DIN EN 175301-803. A secondary line limits pilot feedback to 45 bar to protect control passages, switching time can be adjusted by the S2 discharge feature, and a B10 throttle insert restricts an orifice to 1.0 mm for additional damping. The complete spring-centered assembly weighs 19.0 kg, which must be supported by the mounting structure.
Technical Specifications
D3 Secondary Pressure
45 bar
Electrical Connection
K4 (DIN EN 175301-803)
Manual Override
Concealed (N9)
Max Flow (e Spool, 350 Bar)
650 l/min
Max Operating Pressure
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
13 bar
Nominal Size
NG25
Pilot Oil Supply/return
Internal/Internal (ET)
Porting Pattern
ISO 4401-08-08-0-05
Spool Positions
3
Spool Type
E
Switching Time Adjustment
S2 (Discharge)
Throttle Insert
Ø 1.0 mm (B10)
Valve Weight (spring-centered)
19.0 kg
Way Configuration
4-way
1620 Old Apex Road
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