Bosch Rexroth | 4WP10M3X12
4WP10M3X/12
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The 4WP10M3X/12 valve is manufactured by Bosch Rexroth in the WP Pneumatic Spool Valves series and serves to route hydraulic flow in automated machinery. It is built to size 10, a dimension that determines the internal flow path and permits straightforward selection during system design. The mounting face complies with the ISO 4401-05-04-0-05 pattern so the unit bolts directly to standardized sub-plates. A maximum operating pressure of 350 bar allows the body to tolerate high system loads, while a peak flow rate of 160 l/min supports moderate-capacity actuators. The pilot stage requires at least 8 bar and tolerates up to 160 bar, and each actuation moves 6.9 cm³ of pilot oil to shift the spool. A 7/16-20 UNF thread on the pilot port matches common hydraulic fittings and simplifies hose selection.
The valve functions in ambient temperatures from -20 °C to +70 °C, so it can be mounted in unconditioned enclosures. Hydraulic fluid may range from -20 °C to +80 °C without compromising the internal seals, provided the viscosity remains above 2.8 mm²/s to sustain a stable lubrication film. Cleanliness should not exceed ISO 4406 class 20/18/15 because tighter solids control reduces wear on the precision spool lands. Return port T withstands back-pressures up to 210 bar, protecting the end cover against deformation when downstream restrictions occur. A mean time to dangerous failure of 150 years underscores long service life under correctly filtered fluid and within the stated limits.
Technical Specifications
Ambient Temp Max
+70 C
Ambient Temp Min (nbr)
-20 C
Contamination Class (iso 4406)
20/18/15
Hydraulic Fluid Temp Max
+80 C
Hydraulic Fluid Temp Min (nbr)
-20 C
Maximum Flow
160 l/min
Maximum Operating Pressure
350 bar
Mttfd
150 Years
Pilot Oil Port Thread
7/16-20 UNF
Pilot Pressure Max
160 bar
Pilot Pressure Min
8 bar
Pilot Volume
6.9 cm3
Port T Max Pressure
210 bar
Porting Pattern
ISO 4401-05-04-0-05
Size
10
Viscosity Min
2.8 mm2/s
1620 Old Apex Road
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