Bosch Rexroth | 4WN10H3X12
4WN10H3X/12
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The 4WN10H3X/12 valve is produced by Bosch Rexroth as part of the WP Pneumatic Spool Valves series and is intended to route pressurized fluid in hydraulic automation systems. Its nominal size of 10 defines cavity dimensions that match mid-range manifold blocks, while a maximum operating pressure of 350 bar on ports A, B, and P lets the body withstand high-pressure drives without deformation. A maximum flow of 160 l/min supports rapid cylinder motion in equipment that needs quick response. The spool can be shifted with a minimum pilot pressure of 1.5 bar, so low-pressure control circuits are sufficient. The ISO 4401-05-04-0-05 porting pattern fits common sub-plates, simplifying assembly. Four main ports supply two work lines plus pressure and return, enabling bidirectional actuator control. A 7/16-20 UNF thread on the pilot oil port accepts standard fittings for compact pilot plumbing, and an installation position that can be any orientation gives designers flexibility inside tight power units.
The tank port tolerates up to 210 bar, allowing elevated back-pressure from long return lines without seal damage. A maximum ambient temperature of 70 °C permits mounting near warm machinery, and an 80 °C hydraulic fluid limit accommodates thermal peaks during continuous duty. Cleanliness class ISO 4406 (c) 20/18/15 sets the particle level the filtration system must achieve to keep the spool from sticking. A pilot volume of 23.7 cm³ quantifies the oil charge required for each shift and helps calculate cycle times accurately. The assembly weighs 4.8 kg when equipped with two actuation cylinders, so one technician can handle installation or removal. An MTTFd of 150 years provides a long statistical service life for functional safety assessments.
Technical Specifications
Ambient Temperature Max
+70 °C
Cleanliness Class
ISO 4406 (c) 20/18/15
Hydraulic Fluid Temp Max
+80 °C
Installation Position
Any
Max Flow
160 l/min
Max Operating Pressure (a, B, P)
350 bar
Max Tank Port Pressure
210 bar
Mttfd
150 years
Nominal Size
10
Number Of Main Ports
4
Pilot Oil Port Thread
7/16-20 UNF
Pilot Pressure Min
1.5 bar
Pilot Volume
23.7 cm³
Porting Pattern
ISO 4401-05-04-0-05
Weight (2 Actuation Cylinders)
4.8 kg
1620 Old Apex Road
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