Bosch Rexroth | Z4WE6E68-31EW110K4QMAG24
Z4WE6E68-31/EW110K4QMAG24
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The Z4WE6E68-31/EW110K4QMAG24 valve belongs to the WE Directional Spool Valves series produced by Bosch Rexroth for hydraulic automation where actuator flow must be directed between pressure and return lines. It is built in size 6 to suit compact manifolds and is machined to the ISO 4401-03-02-0-05 porting pattern, while an NFPA D03 footprint ensures compatibility with North American subplates. The spool cavities tolerate a maximum operating pressure of 350 bar at ports P, A, and B, and the tank port withstands up to 160 bar, so the unit can run in high-pressure circuits without external relief. Rated flow reaches 60 l/min, providing adequate volume for medium-duty cylinders and motors. Fluid cleanliness must meet ISO 4406 class 20/18/15 in order to protect the precision lands and maintain reliable shifting under load.
For electrical actuation, the valve carries a 110 V AC coil designed for 50 or 60 Hz supplies and accepts a ±10 percent voltage swing without loss of function. The solenoid draws 220 VA at switch-on to overcome static friction, then settles to a 50 VA holding demand to limit heat rise during continuous service; a 100 percent ED (S1) duty rating confirms that the coil may remain energized indefinitely. Internal suppression limits reverse energy, yet the circuit must withstand up to 500 V of switch-off overvoltage generated by the magnetic field collapse. Position feedback is available through a QM ‘a’ switch that outputs 24 V DC, allowing controllers to monitor spool state. The enclosure is sealed to IP65, so dust ingress and low-pressure water jets do not impair the solenoid or connector.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Nominal Voltage
110 V AC (50/60 Hz)
Duty Cycle
100% ED (S1)
Holding Power (ac)
50 VA
Max Flow (ac)
60 l/min
Max Operating Pressure
350 bar (Ports P, A, B)
Max Switch-off Overvoltage
500 V
Max Tank Port Pressure (ac)
160 bar (Port T)
Nfpa Porting Pattern
D03 (T3.5.1 R2-2002)
Porting Pattern
ISO 4401-03-02-0-05
Position Switch
QM 'a' 24 V DC
Protection Class
IP65
Size
6
Switch-on Power (ac)
220 VA
Voltage Tolerance
±10%
1620 Old Apex Road
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