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The 4WH6J5X/ valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and is intended to route hydraulic flow in automated machinery. Hydraulic actuation shifts the internal element directly because the valve is a direct-operated design, allowing fast response in control loops. Its nominal size of 6 balances compact dimensions with adequate passage area for medium flow rates, while the spool marked with symbol J defines the three functional flow patterns available. Three discrete switching positions enable centered, left, and right flow states so cylinders or motors can extend, retract, or hold. Four ports provide pressure, tank, and dual work connections, and a maximum operating pressure of 315 bar supports high-duty circuits. Installation is simplified by a subplate mounting style that mates to the ISO 4401-03-02-0-05 (D03) interface, giving interchangeability with standard manifolds.
During service the valve carries up to 60 l/min without exceeding its capacity, and the mechanism can shift twice per second to follow rapid command signals. It accepts mineral oils such as HL, HLP, HLPD and HVLP, HVLPD as well as water-glycol HFC fluids so a single unit can be stocked for mixed fluid plants. To protect internal clearances, supplied media must meet cleanliness class ISO 4406 (c) 20/18/15. NBR seals retain pressure and resist the approved fluids, preventing external leakage. By using a spool layout the device redirects flow paths among its four ports without external pilot lines, aligning with its directional control role. A mass of 1.62 kg keeps handling straightforward when replacing or repositioning the component on a manifold block.
Actuation
Hydraulic
Compatible Fluids
HL, HLP, HLPD, HVLP, HVLPD, HFC
Fluid Cleanliness Class
ISO 4406 (c) 20/18/15
Max Flow
60 l/min
Max Operating Pressure
315 bar
Max Switching Frequency
2 Hz
Mounting Interface
ISO 4401-03-02-0-05 (D03)
Mounting Type
Subplate
Nominal Size
6
Number Of Ports
4
Operation
Direct-Operated
Seal Material
NBR
Spool Symbol
J
Switching Positions
3
Valve Type
Directional Spool Valve
Weight
1.62 kg
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