Bosch Rexroth | 4WEH16D7X6EW110N9TK4
4WEH16D7X/6EW110N9TK4
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The 4WEH16D7X/6EW110N9TK4 valve belongs to Bosch Rexroth’s WEH Directional Spool Valves series and directs pressurized oil between actuator ports in hydraulic automation systems. The nominal size of 16 sets the internal passage dimensions that influence pressure loss and response time. A porting pattern conforming to ISO 4401-07-07-0-05 aligns the body with standard subplates, and the subplate mounting style speeds service replacement in manifolds. Installation uses M10 × 60 screws that must be tightened to 58 Nm so the housing seals remain leak-free under load. A high-power 4WE6 pilot valve handles the shifting force so the main spool can move quickly against flow forces. The pilot coil accepts 110 V AC at 50 or 60 Hz, and wiring routes through a DIN EN 175301-803 K4 connector for consistent electrical coupling in control cabinets.
Pilot oil is supplied externally through port X, while the return path is internal to port T, separating control pressure from tank lines inside the machine. The pilot circuit needs at least 12 bar to actuate the spool and can withstand up to 160 bar on the return side without venting. The working ports P, A, and B are rated for 280 bar; at this pressure the valve passes up to 250 l/min through the designated D flow channel. Operating fluid may reach temperatures of 80 °C, provided cleanliness is maintained at ISO 4406 class 20/18/15 to protect the precision spool landings from wear and prevent silting that could delay shifting.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Fluid Cleanliness Class
ISO 4406 20/18/15
Max Flow (d, 280 Bar)
250 l/min
Max Fluid Temperature
+80 °C
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Return Pressure (internal)
160 bar
Min Pilot Pressure (external X)
12 bar
Mounting Screw Size
M10 × 60
Mounting Type
Subplate Mounting
Pilot Coil Voltage
110 V AC (50/60 Hz)
Pilot Return
Internal (T)
Pilot Supply
External (X)
Pilot Valve
4WE6 (High-Power 6E)
Porting Pattern
ISO 4401-07-07-0-05
Size (ng)
16
Tightening Torque (m10)
58 Nm
1620 Old Apex Road
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