Bosch Rexroth | 4WP6JA6X5
4WP6JA6X//5
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The 4WP6JA6X//5 valve belongs to the WP Pneumatic Spool Valves series manufactured by Bosch Rexroth for directional control in hydraulic automation circuits. It is actuated pneumatically, allowing remote switching without electrical components. The unit is built on nominal size 6, so it matches manifolds and subplates designed for that flow cross-section. Its porting pattern follows ISO 4401-03-02-0-05, enabling direct mounting to standardized interface blocks. A pilot port threaded to G1/8 simplifies the connection of control air lines. The internal pilot chamber holds 4.24 cm³, providing a defined volume for rapid spool movement. Consistent response is achieved when pilot pressure stays between 4 and 10 bar, defining the allowable control air range.
The main flow paths tolerate up to 315 bar on ports a, b, and p, supporting high-pressure hydraulic supply lines. Back pressure on the tank port is limited to 160 bar, protecting return lines from overload. The design passes up to 60 l/min, aligning throughput with medium-capacity actuators. A switching frequency ceiling of 7200 cycles per hour ensures the spool and seals can handle rapid duty cycles. Hydraulic fluid and ambient surroundings may reach 80 °C without derating, while operation remains reliable down to −30 °C, broadening installation environments. Cleanliness requirements of ISO 4406 class 20/18/15 restrain particulate contamination to maintain spool precision.
Technical Specifications
Actuation Type
Pneumatic
Cleanliness Class
ISO 4406 20/18/15
Maximum Ambient Temperature
80 °C
Maximum Flow
60 l/min
Maximum Fluid Temperature
80 °C
Maximum Operating Pressure (a/b/p)
315 bar
Maximum Pilot Pressure
10 bar
Maximum Switching Frequency
7200 1/h
Maximum Tank Port Pressure (t)
160 bar
Minimum Ambient Temperature
−30 °C
Minimum Pilot Pressure
4 bar
Nominal Size
6
Pilot Port Thread
G1/8
Pilot Volume
4.24 cm3
Porting Pattern
ISO 4401-03-02-0-05
1620 Old Apex Road
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