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The 4WE6J5X/BG12-12NXHZ2 directional spool valve is manufactured by Bosch Rexroth for the WE Directional Spool Valves series and serves to route hydraulic oil in automated systems. Valve size 6 keeps the assembly compact while accommodating a maximum operating pressure of 350 bar on ports a, b, and p. The design supports a maximum flow of 80 l/min to supply actuators without excessive pressure loss. A 12 V DC solenoid rated at 2.5 A defines the electrical load for machine controllers. The coil uses insulation class F and can reach a surface temperature of 120 °C during continuous duty. Designers must provide suppression for a switch-off overvoltage that can peak at 500 V.
The valve mounts on subplates that follow the NFPA D03 pattern and the ISO 4401-03-02-0-05 porting arrangement, enabling direct interchange with other D03 components. Its tank port tolerates 210 bar, so circuits can include back-pressure without compromising durability. Hydraulic fluid must meet ISO 4406 cleanliness class 20/18/15 to protect internal surfaces from contamination. The mean time to dangerous failure is calculated at 300 years, supporting long service intervals in safety-related equipment. With two solenoids installed, the unit weighs 1.95 kg, which simplifies handling during maintenance. These attributes combine to deliver reliable directional control in automated hydraulic machinery.
Cleanliness Class
ISO 4406 20/18/15
Insulation Class (dc)
F
Max Coil Surface Temperature (dc)
120 C
Max Switch-off Overvoltage
500 V
Max Tank Port Pressure (t, Dc)
210 bar
Maximum Flow (dc)
80 l/min
Maximum Operating Pressure (a/b/p)
350 bar
Mttfd
300 Years
Nfpa Mounting Pattern
D03
Nominal Voltage
12 V DC
Porting Pattern
ISO 4401-03-02-0-05
Rated Current (12 V Dc)
2.5 A
Valve Size
6
Valve Weight (two Solenoids)
1.95 kg
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