Bosch Rexroth | 4WEH16J7X6EG24N9ES2K4B10
4WEH16J7X/6EG24N9ES2K4/B10
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The 4WEH16J7X/6EG24N9ES2K4/B10 valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth to govern oil flow in hydraulic automation circuits. Its NG16 size fits mid-range manifolds while the four-way design provides separate pressure, tank, and two work ports for bidirectional cylinder control. Spool symbol J establishes the internal flow pattern selected when the solenoid is energized or de-energized. A rated flow of 300 l/min permits high circulation without excessive pressure drop through the body. Ports P, A, and B can be exposed to 280 bar so the valve matches the pressure capability of common industrial pumps. The pilot supply is internal, coded E, which draws control oil directly from the pressure gallery and eliminates an external line. Actuation relies on a 24 V DC coil, and the DIN EN 175301-803 K4 connector provides a standardized plug-in electrical interface that simplifies wiring.
The pilot return is external and identified by port Y, allowing drain oil to reach tank without back-pressure on the cover. Pilot functions become available once system pressure reaches the minimum 14 bar threshold, ensuring reliable spool shift. The T port withstands 250 bar so return flow can tolerate momentary spikes, whereas the Y drain is limited to 210 bar to protect seal integrity. A mounting interface of ISO 4401-07-07-0-05 permits direct installation on standardized subplates. Switching time can be tuned with the S2 discharge control feature that meters pilot exhaust for controlled acceleration or deceleration. A concealed manual override, coded N9, gives service personnel a safe way to move the spool when electrical power is absent. Response speed is further refined by a 1.0 mm throttle insert labeled B10, which restricts pilot oil and dampens flow transients.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol J)
300 l/min
Max Pressure (p, A, B)
280 bar
Max Pressure (t Port)
250 bar
Max Pressure (y Port, Dc)
210 bar
Min Pilot Pressure
14 bar
Nominal Voltage
24 V DC
Number Of Ways
4
Pilot Return
External (Y)
Pilot Supply
Internal (E)
Porting Pattern
ISO 4401-07-07-0-05
Size
NG16
Spool Symbol
J
Switching Time Adjustment
S2 (Discharge Control)
Throttle Insert Orifice
1.0 mm (B10)
1620 Old Apex Road
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