Bosch Rexroth | 4WEH16G7X6EW110N9DAL
4WEH16G7X/6EW110N9DAL
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The 4WEH16G7X/6EW110N9DAL directional spool valve is built by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automated circuits using electro-hydraulic actuation and is intended for subplate mounting. The porting pattern follows ISO 4401, so it aligns with standard manifold layouts. Pilot oil is supplied internally from port P and is returned externally via port Y, which separates pilot drainage from the main return line. When the spool is spring-centered, the pilot chamber volume is 5.72 cm³, a figure relevant for sizing control lines and response times.
Maximum operating pressure reaches 280 bar at ports P, A, and B, while port T is limited to 250 bar; the same 250 bar value also serves as the maximum pilot pressure. Contamination limits are defined by cleanliness class 20/18/15 under ISO 4406. The mean time to dangerous failure for this WEH type is 100 years. Surface coating thickness is kept below 100 µm to preserve dimensional accuracy of mounting faces, and the valve weighs 8.9 kg when fitted with two solenoids and a spring-centered spool.
Technical Specifications
Actuation Type
Electro-Hydraulic
Cleanliness Class Iso 4406 (c)
20/18/15
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (port T)
250 bar
Maximum Pilot Pressure
250 bar
Mounting
Subplate Mounting
Mttfd (type Weh)
100 years
Pilot Oil Return
External Via Port Y
Pilot Oil Supply
Internal From Port P
Pilot Volume (spring-centered)
5.72 cm3
Porting Pattern
ISO 4401
Surface Coating Thickness
100 µm (max)
Weight (two Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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