Bosch Rexroth | 4WRAB6W03-1XG24N9K4MR
4WRAB6W03-1X/G24N9K4/MR
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The 4WRAB6W03-1X/G24N9K4/MR proportional directional valve belongs to the 4WRA Proportional Directional Valves series and is produced by Bosch Rexroth for closed-loop hydraulic automation where spool position responds to an electrical command. It installs on a subplate, and the ISO 4401-03-02-0-05 porting pattern aligns the valve with standard manifold cavities. Each pressure, service, and tank port measures 8 mm in diameter to maintain consistent flow paths, while the size 6 envelope suits compact power units. The valve handles up to 42 l/min, supported by a maximum operating pressure of 350 bar on ports a, b, and p. Electrical actuation is supplied from a 24 V DC source that controls the proportional solenoid. M5 × 50 mounting screws in property class 10.9 secure the housing, and a tightening torque of 7 Nm ensures proper clamping without thread damage.
Port T is limited to 210 bar so return circuits can be designed with appropriate back-pressure margins. An IP65 protection class guards the enclosure against dust and water jets when the mating connector is fitted, and the valve withstands 95 percent relative humidity for use in damp environments. Cleanliness of the hydraulic fluid must reach ISO 4406 20/18/15 to protect the precision spool and sleeve. The unit tolerates surface temperatures up to 150 °C, allowing installation close to hot power packs. It survives transport shocks of 15 g lasting 11 ms, which helps during shipment to remote sites. Total mass is 2.0 kg, enabling manual handling during service work.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Max Operating Pressure (a/b/p)
350 bar
Max Pressure Port T
210 bar
Max Relative Humidity
95%
Max Surface Temperature
150 °C
Maximum Flow
42 l/min
Mounting Screws
M5 x 50 (ISO 4762-10.9)
Port Diameter (p/a/b/t)
8 mm
Porting Pattern
ISO 4401-03-02-0-05
Protection Class
IP65
Screw Tightening Torque
7 Nm
Size
6
Supply Voltage
24 V DC
Transport Shock
15 g (11 ms)
Type Of Connection
Subplate Mounting
Weight
2.0 kg
1620 Old Apex Road
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