Bosch Rexroth | 4WEH25J6X6EW110N9EK410B08
4WEH25J6X/6EW110N9EK4/10B08
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The 4WEH25J6X/6EW110N9EK4/10B08 directional spool valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth for routing pressurized fluid in automated hydraulic systems. It is built to the NG25 size, matching manifolds that use 25 mm flow paths. Its porting pattern follows ISO 4401-08-08-0-05 so it bolts directly to standard subplates. A 6E high-power pilot valve provides the force needed to shift the main spool. Pilot oil can be fed internally or returned externally as defined by Code E, giving flexibility in circuit layout. The solenoid receives power through a DIN EN 175301-803 K4 connector that streamlines electrical hookup. A concealed manual override (N9) allows emergency operation without exposing the push pin. Fluid cleanliness must reach class 20/18/15 per ISO 4406, and a 0.8 mm throttle insert (B08) can be fitted to meter pilot flow and soften switching shocks.
The main ports tolerate pressures up to 280 bar, making the valve suitable for heavy-duty machinery. The pilot stage accepts up to 250 bar, while at least 13 bar is required to overcome the centering springs. With a J-type spool the unit passes 520 l/min at 350 bar, and it carries 700 l/min when system pressure is limited to 70 bar. The assembly weighs 19.0 kg when equipped with two solenoids and spring centering, a factor to consider during manifold design. Secure mounting uses six M12 × 60 screws to ISO 4762, which clamp the body evenly and maintain a leak-free interface.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Electrical Connection
DIN EN 175301-803 K4
Manual Override
Concealed (N9)
Mass (two Solenoids, Spring-centered)
19.0 kg
Max Flow (spool J, 350 Bar)
520 l/min
Max Flow (spool J, 70 Bar)
700 l/min
Maximum Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure (spring-centered)
13 bar
Mounting Screws
6x M12 × 60 (ISO 4762)
Pilot Oil Supply/return
Internal/External (Code E)
Pilot Valve Type
6E High-Power
Porting Pattern
ISO 4401-08-08-0-05
Size (iso Ng)
NG25 (W.H 25)
Throttle Insert Diameter
0.8 mm (B08)
1620 Old Apex Road
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