Bosch Rexroth | 4WEH16C7X6EW110N9DA
4WEH16C7X/6EW110N9DA
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The 4WEH16C7X/6EW110N9DA valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and is used to control actuator motion in hydraulic automation circuits. It is built in size NG16, allowing installation in medium-flow manifolds. The 4-way layout provides four ports for pressure, tank, and two work lines. Its spool has two discrete positions to shift flow between these lines. System pressure at ports P, A, and B can reach 280 bar without exceeding ratings. The tank port T is limited to 250 bar to protect return lines. Pilot pressure may be as high as 250 bar while a minimum of 14 bar is required for reliable actuation. When fully open, the valve passes up to 300 l/min so it can drive large cylinders or motors.
Ambient operating temperatures can range from −20 to 50 °C, supporting outdoor or unconditioned machine rooms. Hydraulic media may be between −20 and 80 °C, matching common mineral oils and synthetic blends. Acceptable oil cleanliness is ISO 4406 class 20/18/15, which limits particle contamination for long service life. Pilot oil is supplied externally through port X rather than taken from the main pressure line. Return flow from the pilot stage discharges externally via port Y to avoid back-pressure buildup. A concealed manual override designated N9 lets technicians shift the spool during commissioning or power loss. The mounting interface follows ISO 4401-07-07-0-05 so it fits standard subplates. With one solenoid installed the assembly weighs 8.5 kg, which aids handling during maintenance.
Technical Specifications
Ambient Temp Range (nbr)
-20 to +50 C
Cleanliness Class
ISO 4406 20/18/15
Fluid Temp Range (nbr)
-20 to +80 C
Manual Override
Concealed (N9)
Max Flow
300 l/min
Max Pilot Pressure
250 bar
Max Pressure (p,a,b)
280 bar
Max Pressure (t)
250 bar
Min Pilot Pressure
14 bar
Mounting Pattern
ISO 4401-07-07-0-05
Pilot Oil Return
External (Y)
Pilot Oil Supply
External (X)
Size
NG16
Spool Positions
2 Positions
Way Configuration
4-Way
Weight (1 Solenoid)
8.5 kg
1620 Old Apex Road
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