Bosch Rexroth | 4WN10J3X12
4WN10J3X/12
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The 4WN10J3X/12 valve belongs to the WP Pneumatic Spool Valves series produced by Bosch Rexroth for directing hydraulic flow in automation equipment. It is classified as valve size 10 and fits the ISO 4401-05-04-0-05 mounting pattern, enabling straightforward installation on standard subplates. Four main ports permit connection to pressure, tank, and actuator lines, while the 7/16-20 UNF pilot oil port supports external control circuits. A pilot volume of 23.7 cm³ must be charged, and the pilot stage begins to shift once 1.5 bar is present. The mechanism completes energizing movement in a maximum of 35 ms and de-energizes within 45 ms, allowing rapid cycle times. During operation it can pass up to 160 l/min, matching medium-capacity cylinder or motor requirements.
For ongoing service the valve accepts hydraulic fluid with viscosities up to 500 mm²/s and remains functional while ambient air reaches 70 °C. Fluid temperature may rise to 80 °C without impairing performance, provided cleanliness complies with ISO 4406 class 20/18/15. Pressure limits are 350 bar on the A, B, and P work ports, with the tank port rated for 210 bar. The design allows any mounting orientation, giving flexibility inside compact manifolds. Peak line pressures are governed by the same body that withstands these ratings, so no external reinforcements are needed.
Technical Specifications
Ambient Temperature Max
70 °C
Cleanliness Class
ISO 4406 20/18/15
Hydraulic Fluid Temp Max
80 °C
Installation Position
Any
Main Ports
4
Max Flow
160 l/min
Max Operating Pressure (a, B, P)
350 bar
Max Tank Port Pressure (t)
210 bar
Minimum Pilot Pressure
1.5 bar
Pilot Oil Port
7/16-20 UNF
Pilot Volume
23.7 cm³
Porting Pattern
ISO 4401-05-04-0-05
Switching Time Off (max)
45 ms
Switching Time On (max)
35 ms
Valve Size
10
Viscosity Max
500 mm²/s
1620 Old Apex Road
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