Bosch Rexroth | 3WH6B5X
3WH6B5X/
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The 3WH6B5X/ directional spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. Intended to shift hydraulic flow paths in automation circuits, it relies on hydraulic actuation to move a B-type spool between two switching positions so flow can be started or stopped without electrical components. The valve conforms to size 6 and uses subplate mounting, permitting compact installation on standardized manifolds. Its porting pattern follows ISO 4401-03-02-0-05 for interchangeability with other modular elements. Three ports separate pressure, service, and return lines, while a clamping length of 42 mm secures the body to the base plate with uniform preload.
The unit handles flow up to 60 l/min, allowing medium-capacity actuators to run without excessive pressure drop. Main pressure is permitted to 315 bar, and the tank port can tolerate 160 bar so back-pressure-controlled circuits remain stable. Pilot supply may range from 6 bar to 200 bar; this flexibility lets low-pressure control systems shift the spool yet withstands higher pilot lines for faster response. A pilot volume of 1.23 cm³ keeps actuation energy low, and a maximum switching frequency of 2 Hz prevents thermal overload in repetitive duty. NBR sealing material resists common mineral oils and maintains leakage control under the stated limits.
Technical Specifications
Actuation Type
Hydraulic
Clamping Length
42 mm
Max Flow
60 l/min
Max Operating Pressure
315 bar
Max Switching Frequency
2 Hz
Max Tank Port Pressure
160 bar
Maximum Pilot Pressure
200 bar
Minimum Pilot Pressure
6 bar
Mounting Type
Subplate
Number Of Ports
3
Pilot Volume
1.23 cm³
Porting Pattern
ISO 4401-03-02-0-05
Sealing Material
NBR
Size
6
Spool Type
B
Switching Positions
2
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