Bosch Rexroth | 4WP6D6X5
4WP6D6X/5
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The 4WP6D6X/5 spool valve belongs to the WP Pneumatic Spool Valves series and is produced by Bosch Rexroth for hydraulic automation tasks that require air-operated directional control. Pneumatic actuation lets compressed air shift the spool instead of an electric signal. The nominal size 6 NG6 interface fits standard CETOP 03 subplates. Four ports provide a P-A-B-T path for double-acting cylinders. A maximum operating pressure of 315 bar on pressure and work lines enables use in high-pressure circuits, while a flow capacity of 60 l/min keeps pressure drops within acceptable limits. The valve can cycle up to 7,200 times per hour, supporting fast machine sequences. Because installation is permitted in any position, designers have layout flexibility. An oil cleanliness level of ISO 4406 class 20/18/15 is required to protect the spool and sealing elements.
The hydraulic fluid may reach 80 °C without impairing function, and the valve also withstands ambient temperatures up to 80 °C for reliable operation in warm environments. Tank-port pressure is limited to 160 bar, so return circuitry must remain within that value. Pilot actuation needs an air supply between 4 bar and 10 bar; the lower limit guarantees consistent shifting, and the upper limit prevents damage to pilot passages. A pilot volume of 4.24 cm³ defines the air charge consumed per stroke, aiding calculation of control-line capacity. These remaining parameters establish the full operating envelope for the 4WP6D6X/5 valve in hydraulic automation systems.
Technical Specifications
Actuation Type
Pneumatic
Ambient Temperature (max)
80 C
Cleanliness Class Iso 4406 (c)
20/18/15
Hydraulic Fluid Temperature (max)
80 C
Installation Position
Any
Max Operating Pressure (a/b/p)
315 bar
Max Tank Port Pressure (t)
160 bar
Maximum Flow
60 l/min
Maximum Pilot Pressure
10 bar
Minimum Pilot Pressure
4 bar
Nominal Size
6 (NG6)
Number Of Ports
4
Pilot Volume
4.24 cm3
Switching Frequency
7200 1/h
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