Bosch Rexroth | 4WEH16E7X6EG96N9ETS2K410B10
4WEH16E7X/6EG96N9ETS2K4/10B10
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The 4WEH16E7X/6EG96N9ETS2K4/10B10 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and serves as an electro-hydraulic control element for automated hydraulic circuits. Its NG16 size establishes port diameters suitable for medium-flow machinery, and the 4 ways provide separate paths for pressure, return, and two work lines. A 3-position spool gives center and end positions to manage cylinder movement. The interface is the ISO 4401-07-07-0-05 pattern, allowing direct mounting on standard subplates. When configured with spool symbol E, the valve passes up to 300 l/min, enabling rapid actuator response. Ports p, a, and b withstand operating pressures to 280 bar so the unit can handle demanding industrial loads.
Pilot oil is drawn internally through channel X and returned internally via channel Y, eliminating external pilot lines. The pilot stage needs at least 14 bar to shift the main spool and accepts pressures up to 250 bar; return pressure may rise to 210 bar DC without impairing function. Each shifting event consumes 5.72 cm³ of pilot oil, a value used when sizing accumulators for rapid cycling. Four M10 × 60 screws specified by ISO 4762 secure the valve body, and each screw is tightened to 58 Nm to maintain manifold sealing. System fluid must meet ISO 4406 20/18/15 cleanliness to protect the spool lands and extend service life.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Max Flow (symbol E)
300 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (internal)
210 bar (DC)
Min Pilot Pressure
14 bar
Mounting Screw Torque (m10)
58 Nm
Pilot Return
Internal (Y)
Pilot Supply
Internal (X)
Pilot Volume Per Switch
5.72 cm3
Porting Pattern
ISO 4401-07-07-0-05
Spool Positions
3
Valve Mounting Screws
4x M10 x 60 (ISO 4762)
Valve Size
NG16
Ways
4
1620 Old Apex Road
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