Bosch Rexroth | 4WH6HB5X5
4WH6HB5X/5
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The 4WH6HB5X/5 valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. It directs hydraulic flow to cylinders or motors in automated machinery. The unit employs hydraulic actuation to shift the spool, and its size 6 envelope fits compact power packs. With subplate mounting, installation on standardized manifold blocks is straightforward. The configuration provides four ports so pressure, return, and work lines connect without adapters. Spool symbol HB specifies the internal land arrangement for switching between service positions, while component series 5X marks the design revision. A clamping length of 42 mm holds the body securely to the base plate. The mounting interface follows ISO 4401-03-02-0-05, and the porting pattern matches DIN 24340 Form A, allowing interchange with other D03 pattern valves within the same footprint.
The valve passes up to 60 l/min of oil without exceeding permitted pressure drop. Main ports P, A, and B tolerate operating pressures to 315 bar, and port T is limited to 160 bar to protect the return line. Pilot operation requires at least 4 bar and no more than 10 bar, providing consistent spool movement under varying system conditions. Compatibility with NFPA T3.5.1 R2-2002 D03 ensures it aligns with North American manifold blocks. NBR seals resist common hydraulic fluids and maintain leak-tight service at rated pressures. These capacities support medium-power actuators that must reverse quickly, while pilot control shifts the spool to direct pressure toward the active work port and relieve the opposite side to tank. As a result, the valve suits compact machine tools, presses, and material-handling stations where reliable directional switching is essential.
Technical Specifications
Actuation Type
Hydraulic
Clamping Length
42 mm
Component Series
5X
Connection Type
Subplate Mounting
Max Flow
60 l/min
Max Operating Pressure (p,a,b)
315 bar
Max Pilot Pressure
10 bar
Max Port T Pressure
160 bar
Min Pilot Pressure
4 bar
Mounting Interface (iso)
ISO 4401-03-02-0-05
Mounting Interface (nfpa)
NFPA T3.5.1 R2-2002 D03
Number Of Ports
4
Porting Pattern (din)
DIN 24340 Form A
Seal Material
NBR
Size
6
Spool Symbol
HB
1620 Old Apex Road
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