Bosch Rexroth | 4WEH10D4X6EW110N9ETS2K4B10
4WEH10D4X/6EW110N9ETS2K4/B10
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The 4WEH10D4X/6EW110N9ETS2K4/B10 valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation systems that require reliable flow direction control. As an NG 10 unit, it mounts on manifolds sized for that nominal diameter and follows the ISO 4401-05-05-0-05 porting pattern to ensure interchangeability with standard sub-plates. The design is a 4-way configuration so it can connect pressure, tank, and two actuator lines in typical cylinder circuits. A D-coded two-position spool shifts between flow paths, and the movement is provided by electro-hydraulic actuation that combines a pilot stage with a solenoid for precise switching. Internal pilot oil supply eliminates external lines, reducing plumbing complexity. The housing withstands operating pressures up to 280 bar while the pilot stage tolerates 250 bar, allowing the main stage to shift under full system load.
The valve handles up to 160 l/min so it accommodates medium-to-high flow applications in presses or machine tools. Electrical connection is via a K4 plug conforming to DIN EN 175301-803, simplifying wiring with common industrial connectors. A concealed N9 manual override permits on-site shifting during commissioning without exposing moving parts. Switching time can be fine-tuned through the S2 discharge control feature, letting the user balance response with shock reduction. A Ø 1.0 mm B10 throttle insert can be fitted to limit pilot flow and adjust speed further. Oil entering the unit must meet ISO 4406 cleanliness class 20/18/15 to protect the precision spool and seats. Mounting uses four M6 × 45 screws, and each bolt is tightened to 12.5 Nm to maintain seal compression under pressure pulses.
Technical Specifications
4-way Version
4-Way
Actuation
Electro-Hydraulic
Electrical Connection
K4 (DIN EN 175301-803)
Manual Override
Concealed (N9)
Max Flow (ng10)
160 l/min
Max Operating Pressure
280 bar
Max Pilot Pressure
250 bar
Mounting Bolt Torque
12.5 Nm
Mounting Screws
4x M6 x 45
Oil Cleanliness Class
ISO 4406 20/18/15
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG 10
Spool Symbol
D (2-Position)
Switching Time Adjustment
S2 (Discharge Control)
Throttle Insert
Ø 1.0 mm (B10)
1620 Old Apex Road
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