Bosch Rexroth | H-4WEH32HD6XOF6EW110N9ETS2K4B10D3
H-4WEH32HD6X/OF6EW110N9ETS2K4/B10D3
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The H-4WEH32HD6X/OF6EW110N9ETS2K4/B10D3 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is used to switch high-flow hydraulic circuits in automation systems. It follows the ISO 4401-10-09-0-05 porting pattern for mounting compatibility and is built in size 32 so passage areas support a maximum flow of 1100 l/min. The spool type is designated by symbol D, defining internal flow paths in both neutral and shifted positions. Hydraulic pilot control is provided by a 6E valve, and pilot oil is supplied and returned internally, identified as ET. Main ports withstand up to 350 bar while the pilot stage tolerates 250 bar, and spool movement starts at a minimum pilot pressure of 5 bar.
The electrical interface uses a DIN EN 175301-803 connector in the K4 layout, enabling fast coil exchange. A concealed manual override marked N9 permits local actuation without exposing the mechanism, and the main spool is returned hydraulically to eliminate mechanical springs. Switching time can be tuned with discharge control S2, which bleeds pilot oil to adjust shift speed. A Ø1.0 mm throttle insert coded B10 limits pilot oil flow to stabilize transitions, and a pressure reducing valve set to 45 bar protects the pilot circuitry from pressure spikes. The valve supports a 4-way circuit arrangement, providing separate pressure, tank, and dual actuator lines for bidirectional motion.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Main Spool Return
Hydraulic
Manual Override
Concealed (N9)
Max Operating Pressure (p/a/b)
350 bar
Max Pilot Pressure
250 bar
Maximum Flow
1100 l/min
Min Pilot Pressure
5 bar
Pilot Control Valve
6E
Pilot Oil Configuration
Internal Supply/Internal Return (ET)
Porting Pattern
ISO 4401-10-09-0-05
Pressure Reducing Valve Setting
45 bar
Size (ng)
32
Spool Symbol
D
Switching Time Adjustment
Discharge Control (S2)
Throttle Insert
Ø1.0 mm (B10)
Way Configuration
4-way
1620 Old Apex Road
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