Bosch Rexroth | H-4WEH25J6X6EG24N9TSK4
H-4WEH25J6X/6EG24N9TSK4
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The H-4WEH25J6X/6EG24N9TSK4 valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated machinery. Its NG25 size defines the mounting interface, and the four-way configuration routes pressure and tank lines to two actuator ports. The unit contains three spool positions and uses a J-type spool to establish flow paths suited to load holding and crossover control. A solenoid coil rated at 24 V DC shifts the spool through a DIN EN 175301-803 K4 connector, while a concealed N9 manual override permits local actuation during power loss. Maximum flow reaches 520 l/min at 350 bar on ports P, A, and B, and switching time can be adjusted with the S supply control feature.
Pilot oil is supplied externally through port X and returned internally through port T, simplifying line routing. The pilot circuit operates with a minimum pressure of 13 bar and withstands up to 250 bar, matching high-pressure systems. Port T accommodates back pressure up to 250 bar without degrading performance. Hydraulic fluid may reach temperatures as low as −20 °C, enabling cold-start operation. Together these limits support reliable spool movement in demanding hydraulic circuits.
Technical Specifications
Coil Voltage
24 V DC
Electrical Connector
DIN EN 175301-803 (K4)
Hydraulic Fluid Temp Min (nbr)
-20 °C
Manual Override
Concealed (N9)
Max Flow (j, 350 Bar)
520 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max Pressure (t Port)
250 bar
Min Pilot Pressure (x External)
13 bar
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Spool Positions
3
Spool Type
J
Switching Time Adjustment
Supply Control (S)
Valve Size
NG25
Valve Ways
4
1620 Old Apex Road
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