Bosch Rexroth | Z4WE6E68-31EG24N9K4
Z4WE6E68-31/EG24N9K4
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The Z4WE6E68-31/EG24N9K4 valve is part of the WE Directional Spool Valves series from Bosch Rexroth and is used to route hydraulic flow in automated machinery. It mounts on a subplate with the ISO 4401-03-02-0-05 interface so that installation remains consistent across standard manifolds. A nominal voltage of 24 V DC with a voltage tolerance of ±10 % lets it run from common control supplies, while the 30 W nominal power and 1.25 A rated current define the electrical load for solenoid drivers. The unit is designed for continuous duty at 100 % ED, allowing uninterrupted cycling in production equipment. Its K4 two-pin plus protective-earth connector provides straightforward wiring, and the valve handles up to 350 bar on ports a, b, and p with a maximum flow of 80 l/min to support medium-capacity actuators.
The return line can operate safely because the tank port withstands 210 bar. A switching capability of 4.2 cycles per second gives fast directional changes for responsive control loops. The coil surface temperature may reach 120 °C before thermal limits are met, so suitable cooling or duty management is required in warm environments. A concealed manual override enables direct actuation during setup while preventing accidental use in normal service. Hydraulic oil must meet ISO 4406 20/18/15 cleanliness to limit spool wear and maintain accuracy. The two-solenoid version weighs 1.95 kg, making it easy to handle during assembly and maintenance.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Duty Cycle
100% ED
Electrical Connection
K4 (2-pin + PE)
Manual Override
Concealed
Max Coil Surface Temperature
120 °C
Max Flow (dc)
80 l/min
Max Operating Pressure (a/b/p)
350 bar
Max Switching Frequency
4.2 1/s
Max Tank Port Pressure (t)
210 bar
Nominal Power (dc)
30 W
Nominal Voltage
24 V DC
Rated Current (dc)
1.25 A
Subplate Interface
ISO 4401-03-02-0-05
Voltage Tolerance
±10%
Weight (two Solenoids)
1.95 kg
1620 Old Apex Road
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