Bosch Rexroth | 4WEH16-E7X6EG24N9TK4B10
4WEH16 E7X/6EG24N9TK4/B10
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The 4WEH16 E7X/6EG24N9TK4/B10 directional spool 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. Electro-hydraulic actuation couples a small pilot stage to the main spool, enabling electrical commands to handle large oil volumes. The nominal size NG 16 defines the port dimensions, and with an e-spool it carries up to 300 l/min to service cylinders and motors that demand rapid movement. Pilot oil is supplied externally through port X while returning internally to port T, so the pilot circuit stays clean and separate from tank plumbing. The pilot side needs at least 14 bar to operate and can accept up to 250 bar without damage. A 24 V DC coil powers the solenoid, and a DIN EN 175301-803 K4 plug offers quick, keyed electrical connection to machine wiring harnesses.
The valve fastens to an ISO 4401-07-07-0-05 mounting surface, allowing direct installation on standardized subplates. A concealed N9 manual override lets maintenance staff shift the spool when the control circuit is de-energized. To moderate pilot flow and soften switching impacts, a Ø 1.0 mm B10 throttle insert can be installed in the feed line. Working ports P, A, and B sustain pressures up to 280 bar, while return port T tolerates 250 bar and port Y handles 210 bar in direct-actuated service, covering the range typical of modern high-pressure pumps and back-pressure circuits. The two-solenoid, spring-centered assembly weighs 8.9 kg, so a single technician can position it during machine build or replacement.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (e Spool, Ng16)
300 l/min
Max Pilot Pressure
250 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (dc)
210 bar
Max Pressure Ports P/a/b
280 bar
Min Pilot Pressure (3-pos)
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Nominal Size
NG 16
Nominal Voltage
24 V DC (G24)
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Throttle Insert
Ø 1.0 mm (B10)
Weight (2-solenoid, Spring-centered)
8.9 kg
1620 Old Apex Road
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