Bosch Rexroth | Z4WE6E68-20AG24N9K4
Z4WE6E68-20/AG24N9K4
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The Z4WE6E68-20/AG24N9K4 valve belongs to the WE Directional Spool Valves series from Bosch Rexroth and shifts hydraulic flow paths in automated machinery. It uses a 24 V DC coil so it can be driven directly from common control system power supplies. Continuous energization is allowed because the coil is rated for a 100 % duty cycle, and the winding draws a nominal 1.25 A while dissipating 30 W to create the magnetic force needed to move the spool. The electronics accept a ±10 % voltage swing, giving tolerance to supply variation without false actuation. Coil surface temperature may reach 120 °C, so cabinet layout must allow the necessary thermal clearance. An IP65 enclosure protects the solenoid against dust and low-pressure water jets, ensuring reliable service in industrial environments.
The valve mounts on subplates that follow the ISO 4401-03-02-0-05 pattern, guaranteeing interchangeability with widely used size 6 manifolds. In operation ports A, B, and P can be pressurized up to 350 bar, while the T port withstands 210 bar when used with direct current excitation, enabling use in high-pressure circuits. Flow capacity reaches 60 l/min when powered by alternating current drivers and rises to 80 l/min under direct current, allowing the designer to match response speed to system requirements. Hydraulic fluid must be filtered to ISO 4406 class 20/18/15 to limit wear and sticking of the spool. A concealed manual override lets maintenance staff shift the spool without energizing the coil, and the assembly weight of 1.95 kg for two solenoids simplifies handling during installation.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Duty Cycle
100% ED
Manual Override
Concealed (N9)
Max Coil Surface Temp
120 °C
Max Flow (ac)
60 l/min
Max Flow (dc)
80 l/min
Max Operating Pressure (a/b/p)
350 bar
Max Tank Port Pressure (dc)
210 bar
Nominal Current (24 V Dc)
1.25 A
Nominal Power
30 W
Porting Pattern
ISO 4401-03-02-0-05
Protection Class
IP65 (K4)
Voltage Tolerance
±10%
Weight (two Solenoids)
1.95 kg
1620 Old Apex Road
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