Bosch Rexroth | H-4WEH10H4X6EG24N9TSK4B10D3V
H-4WEH10H4X/6EG24N9TSK4/B10D3V
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The H-4WEH10H4X/6EG24N9TSK4/B10D3V valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation that requires precise flow control. It is built in size NG10, giving it a nominal bore suited for medium-flow manifolds, and provides a 4/3-way directional function so four ports can be connected in three discrete positions. The spool symbol H specifies the internal land arrangement to establish the required open center and crossover paths during operation. A porting pattern of ISO 4401-05-05-0-05 enables direct mounting on standardized subplates. Control oil is supplied externally through port X, while pilot oil returns internally to tank via port T, simplifying external piping. The solenoid coil is wired through a DIN EN 175301-803 connector and is energized at a rated voltage of 24 V DC to shift the spool on demand.
Working ports p, a, and b tolerate a maximum operating pressure of 350 bar, allowing the valve to handle high-pressure circuits. The pilot stage can accept up to 250 bar, and its return path is limited to 210 bar, while at least 12 bar is needed on the external pilot line to guarantee reliable actuation. An integrated D3 pressure-reducing valve limits pilot pressure to a fixed setting of 45 bar to protect the control components. A throttle insert with a diameter of 1.0 mm meters pilot oil flow so that the spool moves at a controlled speed. Hydraulic fluid must meet a cleanliness class of ISO 4406 (c) 20/18/15 to prevent wear and ensure consistent switching performance.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Directional Function
4/3-way
Electrical Connection
DIN EN 175301-803
Max Operating Pressure (p,a,b)
350 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y Internal, Dc)
210 bar
Min Pilot Pressure (x External)
12 bar
Pilot Oil Return
Internal (T)
Pilot Oil Supply
External (X)
Porting Pattern
ISO 4401-05-05-0-05
Pressure Reducing Valve
D3
Pressure Reducing Valve Setting
45 bar
Rated Voltage
24 V DC
Size
NG10
Spool Symbol
H
Throttle Insert Diameter
1.0 mm
1620 Old Apex Road
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