Bosch Rexroth | 4WP6D6XN5
4WP6D6X/N/5
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The 4WP6D6X/N/5 valve belongs to the WP Pneumatic Spool Valves series produced by Bosch Rexroth and directs hydraulic flow in compact automation circuits. It is pneumatically actuated, allowing a pilot air signal to shift the spool without electric solenoids. The valve fits size 6 interfaces and uses the ISO 4401-03-02-0-05 mounting pattern for easy installation on subplates. Four main ports connect to pressure, tank, and two actuator lines, while a G1/4 pilot port handles the control air. The pilot chamber volume is 4.24 cm³, a factor that influences response time. Mineral oil classified as HL or HLP is the specified hydraulic medium, and a manual override permits local spool positioning during setup or fault recovery.
The unit tolerates 315 bar on ports A, B, and P, with port T limited to 160 bar, enabling high-pressure control of cylinders with moderate return pressure. Flow capacity reaches 60 L/min for medium-sized actuators. Reliable shifting requires a pilot supply between 4 bar and 10 bar, staying below the maximum to protect seals. A switching frequency of 7 200 cycles per hour supports rapid machine sequences. Fluid cleanliness must be maintained at 20/18/15 per ISO 4406 to prevent spool abrasion and sticking, safeguarding service life in demanding environments.
Technical Specifications
Actuation
Pneumatic
Cleanliness Class (iso 4406)
20/18/15
Hydraulic Fluid
Mineral Oil (HL, HLP)
Main Ports
4
Manual Override
Yes
Max Flow
60 l/min
Max Pilot Pressure
10 bar
Max Pressure (a/b/p)
315 bar
Max Pressure (t)
160 bar
Max Switching Frequency
7200 1/h
Min Pilot Pressure
4 bar
Mounting Pattern (iso)
ISO 4401-03-02-0-05
Pilot Port Thread
G1/4
Pilot Volume
4.24 cm3
Size
6
1620 Old Apex Road
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