Bosch Rexroth | 4WEH16J7X6EW110N9DK25L
4WEH16J7X/6EW110N9DK25L
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The 4WEH16J7X/6EW110N9DK25L valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automated systems that require reliable switching between actuator circuits. The nominal size 16 defines the internal passage area and matches the subplate mounting specified for this model. An ISO 4401-07-07-0-05 porting pattern ensures interchangeability with common manifold blocks. Three spool positions provide extend, center, and retract states, each actuated by a 4WE6 pilot valve arranged on the cover. The wet-pin solenoid design immerses the armature in fluid to improve heat dissipation, and the fully assembled unit weighs 8.9 kg with two solenoids and the spring-centering kit. Hydraulic cleanliness must reach class 20/18/15 per ISO 4406 to maintain consistent shifting performance.
The valve passes up to 300 l/min through symbol J when open, and the pressure at ports P, A, and B may rise to 280 bar during operation. Return port T is limited to 250 bar, identical to the maximum pilot pressure permissible in the control stage. Spring-centered function is available once 14 bar of pilot pressure is reached, displacing a pilot volume of 5.72 cm³ for each stroke. Service technicians must tighten the M10 mounting screws to 58 Nm to secure the body against the manifold, and the hydraulic fluid temperature may reach +80 °C without impairing seals or response time. These limits define the working envelope for automated power units that rely on rapid and repeatable directional control.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Fastening Torque (m10 Screws)
58 Nm
Max Flow (symbol J)
300 l/min
Max Hydraulic Fluid Temperature
+80 °C
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Min Pilot Pressure (spring-centered)
14 bar
Mounting Type
Subplate Mounting
Number Of Spool Positions
3
Pilot Valve Type
4WE6
Pilot Volume (spring-centered)
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Size (ng)
16
Solenoid Design
Wet-Pin
Weight (2 Solenoids, Spring-centered)
8.9 kg
1620 Old Apex Road
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