Bosch Rexroth | 4WH6J5X5
4WH6J5X/5
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The 4WH6J5X/5 valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs pressurized fluid within hydraulic automation circuits and is operated by hydraulic actuation, so a pilot line moves the spool without electric or manual input. The unit is identified as component series 5X, and its nominal size of 6 defines the flow cross-section in the ISO size 03 cavity. Spool symbol J establishes the internal flow paths required for typical cylinder extend and retract functions. A maximum operating pressure of 315 bar at ports A, B, and P permits use in high-pressure systems, while a rated flow of 60 l/min keeps pressure loss within acceptable limits. Subplate mounting lets the valve be replaced quickly, and the porting pattern ISO 4401-03-02-0-05 aligns bolt holes with standard manifolds.
Oil supplied to the 4WH6J5X/5 must meet ISO 4406 cleanliness level 20/18/15 to maintain reliable spool movement. The body is machined with four main ports, giving separate connections for pressure, tank, and two work lines. A spring return mechanism centers the spool when pilot pressure is removed, and the internal pilot volume of 1.23 cm³ keeps shift times short. Pilot control is allowed up to 200 bar, while back-pressure at port T must not exceed 160 bar. The interface corresponds to NFPA standard T3.5.1 R2 D03 so the valve fits American subplates, and NBR seals withstand common mineral hydraulic oils.
Technical Specifications
Actuation Method
Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Component Series
5X
Main Ports
4
Max Flow Rate
60 l/min
Max Operating Pressure (a/b/p)
315 bar
Max Pressure Port T
160 bar
Mounting
Subplate
Nfpa Interface
T3.5.1 R2 D03
Nominal Size
6
Pilot Pressure Max
200 bar
Pilot Volume
1.23 cm³
Porting Pattern
ISO 4401-03-02-0-05
Return Type
Spring Return
Seal Material
NBR
Spool Symbol
J
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