Bosch Rexroth | 4WEH22J7X6EW110N9S2DA
4WEH22J7X/6EW110N9S2DA
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The 4WEH22J7X/6EW110N9S2DA valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for use in hydraulic automation systems. It routes pressurized oil between actuator ports according to electrical pilot signals. The unit is built in valve size NG25 (W.H 22), allowing compatibility with medium-flow manifolds. Its subplate interface follows the ISO 4401-08-08-0-05 porting pattern so installation aligns with industry standard mounting footprints. When centered by springs under symbol J, the housing passes up to 450 l/min, supporting high throughput power stages. Main ports withstand operating pressures to 280 bar, giving headroom for heavy-duty cylinders. Acceptable viscosity spans 2.8 to 500 mm²/s, permitting use of thin start-up oil as well as thicker lubricants. The valve works with mineral oil groups HL, HLP, or HVLP defined in DIN 51524, ensuring fluid compatibility across common plant supplies. Pilot actuation is handled by a High-Power 6E control stage, and both pilot supply and return are arranged as external lines at ports X and Y to separate control flow from tank return.
Pilot circuit limits include a maximum pressure of 210 bar and a permitted return pressure at port Y of 160 bar, while reliable shifting begins once at least 10.5 bar is present on the spring-centered three-position model. The ambient environment around NBR seals can range from –20 to +50 °C, and the hydraulic fluid itself may reach –20 to +80 °C during service. System cleanliness must be maintained at ISO 4406 code 20/18/15 to preserve spool accuracy. A concealed manual override identified as option N9 lets technicians move the spool during commissioning without energizing the solenoids. The assembled two-solenoid configuration weighs 11.9 kg, which aids stable mounting on power units or subplates and balances against shock loads in mobile equipment.
Technical Specifications
Ambient Temperature (nbr Seals)
–20 to +50 °C
Cleanliness Class (iso 4406)
20/18/15
Hydraulic Fluid (mineral Oils)
HL, HLP, HVLP (DIN 51524)
Hydraulic Fluid Temperature (nbr)
–20 to +80 °C
Manual Override
Concealed (N9)
Max Flow (symbol J, Spring-centered)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Max Pilot Return Pressure (y, Ac)
160 bar
Min Pilot Pressure (3-pos, Spring)
10.5 bar
Pilot Control Valve
High-Power 6E
Pilot Oil Supply/return
X External; Y External
Porting Pattern
ISO 4401-08-08-0-05
Valve Size
NG25 (W.H 22)
Viscosity Range
2.8 to 500 mm²/s
Weight (2-solenoid, Spring-centered)
11.9 kg
1620 Old Apex Road
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