Bosch Rexroth | H-4WEH16J7X6EG24N9K4
H-4WEH16J7X/6EG24N9K4
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The H-4WEH16J7X/6EG24N9K4 directional spool valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth. It directs hydraulic flow in automated machinery where fast and reliable switching is needed. The valve is built in nominal size 16 which defines the interface dimensions for manifolds. Its porting pattern follows ISO 4401-07-07-0-05 so it aligns with standardized subplates. Subplate mounting enables quick removal and maintenance within modular hydraulic blocks. Spool symbol J determines flow paths and allows a performance limit of 300 l/min for high-throughput circuits. The main stage tolerates up to 350 bar on ports P, A, and B, accommodating high-pressure systems. External pilot oil supply ensures the spool sees stable control pressure independent of load variations. Pilot actuation is handled by a 4WE 6E valve that provides precise directional commands to the main spool.
The pilot stage is energized through a 24 V DC solenoid that suits common machine control voltage levels. An electrical plug conforming to DIN EN 175301-803 provides sealed termination for the coil. System designers must supply pilot pressure between 14 and 250 bar, establishing the control window for stable actuation. Port Y can be exposed to a maximum of 210 bar, so drains must be routed accordingly. External pilot oil return prevents back pressure from influencing the spool response. A concealed manual override identified by code N9 allows service technicians to shift the spool during commissioning without disturbing the electrical circuit. The cleanliness class of 20/18/15 per ISO 4406 defines the allowable contamination level to protect seals and sliding surfaces.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed (N9)
Maximum Operating Pressure (p/a/b)
350 bar
Maximum Pilot Pressure
250 bar
Maximum Pressure At Port Y (dc)
210 bar
Minimum Pilot Pressure
14 bar
Mounting
Subplate
Nominal Size (ng)
16
Performance Limit (spool J)
300 l/min
Pilot Control Valve
4WE 6E
Pilot Oil Return
External
Pilot Oil Supply
External
Porting Pattern
ISO 4401-07-07-0-05
Solenoid Voltage
24 V DC
Spool Symbol
J
1620 Old Apex Road
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