Bosch Rexroth | 3WH6B9-5X5
3WH6B9-5X/5
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The 3WH6B9-5X/5 spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for hydraulic automation tasks that require switching flow paths. The valve is hydraulically actuated, so pilot pressure moves the internal spool without electrical or manual input. Two switching positions permit discrete control between flow and shut-off states, while three working ports establish supply, return, and actuator connections. The ISO 4401-03-02-0-05 porting pattern aligns the body with standard manifolds, and a CETOP D03 interface keeps mounting dimensions uniform across modular stacks. A nominal size of 6 determines the cross-section area of internal channels, and a maximum operating pressure of 315 bar lets the unit work in medium-pressure circuits.
A rated flow of 60 l/min limits the valve to circuits where demanded volume stays within that value, preventing excessive pressure drop at higher displacements. Subplate mounting simplifies maintenance because the valve can be removed without disturbing hard piping, and M5 × 50 mounting screws secure it to the base plate at the specified torque. The clamping length is 42 mm, providing adequate thread engagement for reliable sealing. NBR seals isolate the ports from external leakage and support petroleum-based or synthetic oil compatibility. Approved hydraulic fluids include HL, HLP, HLPD, HVLP, HVLPD, and HFC, offering flexibility in selecting anti-wear or fire-resistant media. The assembly weighs 1.26 kg, so a single technician can install or replace it without lifting devices.
Technical Specifications
Actuation Type
Hydraulic
Cetop Interface
D03
Clamping Length
42 mm
Hydraulic Fluids
HL, HLP, HLPD, HVLP, HVLPD, HFC
Maximum Flow
60 l/min
Maximum Operating Pressure
315 bar
Mounting Screws
M5 x 50
Mounting Type
Subplate
Nominal Size
6
Number Of Ports
3
Porting Pattern
ISO 4401-03-02-0-05
Seal Material
NBR
Switching Positions
2
Weight
1.26 kg
1620 Old Apex Road
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