Bosch Rexroth | H-4WEH10M4X6EG24N9ETK4B10D3
H-4WEH10M4X/6EG24N9ETK4/B10D3
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The H-4WEH10M4X/6EG24N9ETK4/B10D3 belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is intended for hydraulic automation where precise directional control is required. Its NG10 size matches medium-capacity manifolds, and electro-hydraulic actuation converts the 24 V DC solenoid signal into pilot flow through a DIN EN 175301-803 K4 connector. Mounting is on a subplate with the ISO 4401-05-05-0-05 porting pattern. The main flow path handles up to 160 l/min at 350 bar. Pilot oil is supplied and returned internally, and each switch displaces 2.04 cm³ of pilot fluid. A concealed manual override permits local shifting when needed, and a Ø 1.0 mm throttle insert conditions pilot flow for smoother response.
The pilot stage withstands up to 250 bar while still operating reliably. For spring-centered three-position spools, at least 12 bar pilot pressure is required to move the spool. An integrated D3 pressure-reducing valve limits secondary pressure to 45 bar to safeguard downstream components. Hydraulic fluid must be filtered to ISO 4406 class 20/18/15 to maintain component life. Mean time to dangerous failure is rated at 100 years, supporting long service intervals. These limits define a stable operating window for pressure and cleanliness. They enable the valve to maintain repeatable switching performance in automated hydraulic machinery.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 K4
Fluid Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed
Max Flow
160 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (3-pos, Spring-centered)
12 bar
Mttfd
100 years
Pilot Oil Configuration
Internal Supply/Internal Return
Pilot Volume Per Switch
2.04 cm³
Porting Pattern
ISO 4401-05-05-0-05
Pressure Reducing Valve D3 Secondary Pressure
45 bar
Size
NG10
Supply Voltage (solenoid)
24 V DC
Throttle Insert
Ø 1.0 mm
1620 Old Apex Road
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