Bosch Rexroth | 4WEH16R7X6EW110N9ETDALB10
4WEH16R7X/6EW110N9ETDAL/B10
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The 4WEH16R7X/6EW110N9ETDAL/B10 valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation circuits. It is a 4-way design that routes pressure and return lines to two work ports, while spool symbol R defines the specific flow paths available in each operating state. Three spool positions give extend, retract, and neutral functions, and a spring-centered return pushes the spool back to neutral whenever pilot pressure is released. The NG16 size allows mounting in manifolds that accept 16 mm cavity dimensions, and the porting pattern follows ISO 4401-07-07-0-05 so the unit bolts directly to standard subplates.
The valve tolerates 280 bar on ports P, A, and B, and its pilot stage can be pressurized up to 250 bar for actuation, while a minimum of 14 bar is required to overcome the centering springs. A pilot flow of 35 l/min produces the shortest switching time, and the internal ET supply and return eliminate external pilot lines. The pilot chamber volume is 5.72 cm³, which helps size the upstream control circuit, and a Ø1.0 mm throttle insert labeled B10 limits pilot flow for smoother response when needed. Four M10 × 60 mounting screws secure the housing, each tightened to 58 Nm, and the complete assembly with two solenoids and spring return weighs 8.9 kg.
Technical Specifications
Control Spool Return
Spring-Centered
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
14 bar
Mounting Screws
4x M10 x 60
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Supply/return
Internal (ET)
Pilot Volume (spring-centered)
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Screw Tightening Torque
58 Nm
Size
NG16
Spool Positions
3
Spool Symbol
R
Throttle Insert
Ø1.0 mm (B10)
Way Configuration
4-Way
Weight (two Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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