Bosch Rexroth | 4WEH16J7X6EW110N9ETDALB10
4WEH16J7X/6EW110N9ETDAL/B10
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The 4WEH16J7X/6EW110N9ETDAL/B10 valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation tasks where controlled flow paths are needed. It tolerates line pressures up to 280 bar in ports P, A, and B to support high-pressure circuits. Pilot oil is taken internally from port P and returned internally through T, so no external pilot plumbing is necessary. A pilot flow of 35 l/min is required to achieve the shortest switching time, while a minimum pilot pressure of 14 bar keeps the spring-centered spool responsive. The pilot chamber holds 5.72 cm³, and a 1.0 mm throttle insert moderates the pilot flow entering this volume. The pilot stage may be loaded up to 250 bar without damage, and hydraulic fluid must meet ISO 4406 cleanliness class 20/18/15 to protect the control edges.
The valve follows the ISO 4401-07-07-0-05 porting pattern so it fits standard manifold interfaces used in industrial power units. Installation requires four M10 × 60 mounting screws tightened to 58 Nm ±10 % to maintain a reliable seal under vibration. The pilot return channel may see pressures up to 160 bar, so the attachment hardware and manifold must be rated accordingly. An external coating limited to 100 µm thickness provides corrosion resistance without obstructing mounting clearances. The mean time to dangerous failure is rated at 100 years, giving designers a long diagnostic interval. These construction details, combined with the internal pilot arrangement already described, ensure consistent operation within compact hydraulic assemblies.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (internal, Ac)
160 bar
Min Pilot Pressure (3-pos, Spring-centered)
14 bar
Mounting Screw Quantity
4
Mounting Screw Size
M10 x 60
Mounting Screw Tightening Torque
58 Nm (±10%)
Mttfd
100 years
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Oil Return
Internal (via T)
Pilot Oil Supply
Internal (from P)
Pilot Volume (3-pos, Spring-centered)
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Surface Coating Thickness
100 µm (max)
Throttle Insert Diameter
1.0 mm
1620 Old Apex Road
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