Bosch Rexroth | 4WEH-16-J7X6EW110N9EK4B10
4WEH 16 J7X/6EW110N9EK4/B10
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The 4WEH 16 J7X/6EW110N9EK4/B10 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and shifts hydraulic flow paths in automated machinery. Electro-hydraulic actuation lets a small pilot signal move the main spool so electronic controllers can manage high flow circuits. A 4-way layout offers two work ports plus pressure and tank ports for bidirectional cylinder or motor control. Valve size NG16 defines passage dimensions that suit medium flow rates, and the ISO 4401 porting pattern permits direct mounting on standard subplates. The valve passes up to 300 l/min to support fast actuator movement. Ports P, A, and B tolerate 280 bar, covering typical system pressures. A minimum pilot pressure of 14 bar guarantees reliable shifting even in low-pressure conditions. The B10 throttle insert with a 1.0 mm orifice moderates pilot oil flow for controlled response.
The pilot circuit accepts up to 250 bar so no additional reducer is needed in high pressure manifolds. Port T is also rated for 250 bar, allowing elevated tank line back-pressure without damaging the spool seals. Pilot return through port Y can withstand 160 bar, which enables external back-pressure control. An internal pilot oil supply removes the need for a separate feed line, while external pilot oil return keeps pilot exhaust isolated from the main flow. Electrical connection uses the DIN EN 175301-803 K4 plug for straightforward coil wiring. A concealed manual override labeled N9 lets technicians shift the spool mechanically during commissioning or power loss while preventing accidental operation. The complete assembly weighs 8.9 kg, making it manageable for single-person installation.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow
300 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return (y) Pressure (ac)
160 bar
Max Pressure Port T
250 bar
Minimum Pilot Pressure
14 bar
Pilot Oil Return
External (Port Y)
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401
Size
NG16
Throttle Insert
Ø1.0 mm (B10)
Way Configuration
4-Way
Weight
8.9 kg
1620 Old Apex Road
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