Bosch Rexroth | 4WEH16J7X6EG24N9ETSK4B10
4WEH16J7X/6EG24N9ETSK4/B10
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The 4WEH16J7X/6EG24N9ETSK4/B10 directional spool valve is part of the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation. It channels pressure and tank lines within NG16 manifolds, using the ISO 4401-07-07-0-05 porting pattern to fit standard subplates. The valve handles a maximum pressure of 280 bar in ports P, A, and B, while port T is limited to 250 bar. Pilot actuation is fed internally through the ET path, and return flow is also internal on port T, so no external lines are required. The pilot stage works between 14 bar and 250 bar, allowing stable switching across varying system conditions. With spool J in this size, the valve permits up to 300 l/min, supporting high flow circuits without auxiliary throttling.
Control features include a 24 V DC pilot coil that connects through the DIN EN 175301-803 K4 plug, simplifying wiring in modular cabinets. Switching time can be tuned via supply control identified by code S, and a concealed manual override designated N9 lets technicians shift the spool during commissioning without removing the coil. A throttle insert with a 1.0 mm orifice, marked B10, is supplied for metering pilot oil when required. The assembly adheres to cleanliness class ISO 4406 20/18/15, indicating the fluid purity level needed for reliable operation. These electrical and hydraulic provisions complement the mechanical ratings introduced earlier, enabling precise, repeatable directional control in automated machinery.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (port T)
250 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
14 bar
Nominal Size
NG16
Pilot Oil Return
Internal (T)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Qv Max (spool J, Ng16)
300 l/min
Rated Voltage (pilot Coil)
24 V DC
Switching Time Adjustment
Supply Control (S)
Throttle Insert
Ø 1.0 mm (B10)
1620 Old Apex Road
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