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The 4WE6H73-6X/EG24N9K4/A12 is a directional spool valve produced by Bosch Rexroth within the WE Directional Spool Valves series. It directs hydraulic flow to actuators in automated machinery and mobile equipment. The valve follows mounting pattern ISO 4401-03-02-0-05 and accommodates a maximum flow of 80 l/min, allowing medium-capacity circuits to change direction quickly. System ports P, A, and B may be pressurized up to 350 bar, while the T return line is limited to 210 bar. Fluid cleanliness must conform to ISO 4406 code 20/18/15 to maintain spool and seat life. Electrical actuation is provided by a 24 V DC solenoid that tolerates a ±10 % supply variation, and the housing achieves IP65 ingress protection for installation in damp factory areas.
The solenoid draws a nominal current of 1.25 A and consumes 30 W, so control electronics can be sized precisely. Continuous duty is permitted because the coil is rated for 100 % ED and built to insulation class F, with the external surface temperature allowed to reach 120 °C during operation. A concealed manual override identified as N9 lets maintenance staff shift the spool when power is unavailable; this feature can be used at tank pressures up to 50 bar. The electromagnetic drive can cycle the spool at a maximum of 4.2 operations per second to support rapid sequence controls. Overall, the valve integrates these electrical and mechanical limits to provide reliable directional control in hydraulic automation.
Cleanliness Class
ISO 4406 20/18/15
Coil Surface Temp Max
120 °C
Duty Cycle
100% ED
Insulation Class (dc)
F
Manual Override
Concealed (N9)
Manual Override Max Tank Pressure
50 bar
Max Flow (dc)
80 l/min
Max Pressure P/a/b
350 bar
Max Pressure T (dc)
210 bar
Max Switching Frequency (dc)
4.2 1/s
Mounting Pattern
ISO 4401-03-02-0-05
Nominal Current (24 V Dc)
1.25 A
Nominal Power (dc)
30 W
Nominal Voltage
24 V DC
Protection Class
IP65
Voltage Tolerance
±10%
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