Bosch Rexroth | 4WRAB6W25-1XG12N9DAMR
4WRAB6W25-1X/G12N9DA/MR
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The 4WRAB6W25-1X/G12N9DA/MR proportional directional valve is produced by Bosch Rexroth for the 4WRA Proportional Directional Valves series and modulates hydraulic flow and direction in automation circuits. The solenoid runs on a 12 V DC supply, and its coil resistance of 4.8 Ω at 20 °C aligns with low-voltage machine systems. Inductance of 86 mH shapes current rise and stabilizes the magnetic force that shifts the spool. Maximum coil power is limited to 30 W, and the unit is rated for a continuous duty cycle so thermal limits are not exceeded in long production runs. A covered manual override permits direct spool actuation during commissioning or power loss. Wiring enters through a 1/2-14 NPT cable gland that secures the conductors, and the housing achieves an IP65 protection class to block dust and water jets.
The valve is built in size 6 (NG6) and bolts to manifolds via the ISO 4401-03-02-0-05 mounting interface for quick replacement. It carries a W spool symbol that establishes bidirectional flow paths through four ports, enabling pressure supply, dual work lines, and a tank return in one body. Nominal flow reaches 25 L/min at a 10 bar differential, while maximum flow capability rises to 30 L/min for short bursts. Pressure limits are 350 bar on ports P, A, and B, and 210 bar on port T, allowing safe operation in high-pressure circuits with standard return piping. These hydraulic ratings support precise metering and rapid reversals in industrial or mobile machinery where accurate actuator control is mandatory.
Technical Specifications
Coil Resistance
4.8 Ω (20 °C)
Duty Cycle
Continuous
Electrical Connection
1/2-14 NPT Cable Gland
Inductance
86 mH
Manual Override
Covered
Max Coil Power
30 W
Maximum Flow
30 L/min
Mounting Interface
ISO 4401-03-02-0-05
Nominal Flow
25 L/min (Δp 10 bar)
Number Of Ports
4
Port T Max Pressure
210 bar
Ports P/a/b Max Pressure
350 bar
Protection Class
IP65
Size
6 (NG6)
Spool Symbol
W
Supply Voltage
12 V DC
1620 Old Apex Road
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