Bosch Rexroth | H-4WEH32Y6X6EW110N9ETDALB10D3
H-4WEH32Y6X/6EW110N9ETDAL/B10D3
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The H-4WEH32Y6X/6EW110N9ETDAL/B10D3 valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and directs oil flow in automated hydraulic systems. The nominal size is 32 (NG32), giving passage dimensions that support a maximum flow of 1100 l/min. A maximum operating pressure of 350 bar on ports p, a, and b permits use in high-pressure circuits. The porting pattern follows ISO 4401-10-09-0-05, allowing the valve to interchange with other components that share the same footprint. Fluid entering the unit must meet cleanliness class 20/18/15 per ISO 4406 to protect internal lands and bores. The body mounts on a subplate, fastened with six M20 × 80 screws, and each screw requires a tightening torque of 340 Nm to secure the seal face without distortion.
Pilot control parameters define the actuation performance of this model. The internal ET arrangement supplies and returns pilot oil without extra tubing, simplifying plumbing. To move the spool, the pilot stage accepts pressures between a minimum of 10 bar for the two-spool spring-end version and a maximum of 250 bar. Achieving the shortest switching time requires a pilot flow of 45 l/min, and the associated pilot chamber volume is 58.8 cm³, values that establish the amount of oil that must be displaced during each shift. A secondary port labeled D3 is limited to 45 bar, and the D3 cover itself weighs 0.4 kg. The complete valve, equipped with one solenoid, has a mass of 17.6 kg, a figure that installers must consider when positioning the assembly on machinery.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
D3 Secondary Pressure
45 bar
D3 Weight
0.4 kg
Max Operating Pressure (p/a/b)
350 bar
Max Pilot Pressure
250 bar
Maximum Flow (size 32)
1100 l/min
Min Pilot Pressure (2-spool Spring-end)
10 bar
Mounting Interface
Subplate
Mounting Screws
6x M20 x 80
Nominal Size
32 (NG32)
Pilot Flow For Shortest Switching
45 l/min
Pilot Supply And Return
Internal (ET)
Pilot Volume (2-spool)
58.8 cm3
Porting Pattern
ISO 4401-10-09-0-05
Screw Tightening Torque
340 Nm
Valve Weight (one Solenoid)
17.6 kg
1620 Old Apex Road
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