Bosch Rexroth | Z4WE6E68-30EG24K4
Z4WE6E68-30/EG24K4
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The Z4WE6E68-30/EG24K4 directional spool valve is manufactured by Bosch Rexroth as part of the WE Directional Spool Valves series and controls oil routes in hydraulic automation systems. It attaches to manifolds through the ISO 4401-03-02-0-05 interface, so the unit can be swapped without reworking subplates. Compatibility with the NFPA D03 pattern further simplifies use in North American installations. A maximum operating pressure of 350 bar on ports A, B, and P allows the valve to handle high-pressure supply lines, while the tank port is limited to 210 bar to protect return components. The hydraulic passages accept up to 80 l/min, giving sufficient flow for medium-sized cylinders or motors. Continuous energization is possible because the coil is rated for a 100 percent duty cycle, and its electrical demand remains at 30 W during steady operation. The solenoid is designed for 24 V DC and keeps correct shifting performance within a ±10 percent line-voltage window.
Maintaining system cleanliness is required; therefore the valve should only be supplied with oil that meets ISO 4406 class 20/18/15 to prevent spool wear. An IP65 degree of protection guards the enclosure against dust and low-pressure water jets, so cabinet mounting is not essential. Electrical hookup is performed through a DIN EN 175301-803 form K4 connector, which offers quick coil replacement during service. The unit can be installed in any position, giving designers flexibility when arranging stacked manifold stations. Thermal limits are defined by insulation class F and a permissible coil surface temperature of 120 °C, enabling continuous work in warm machine rooms. A switching frequency of 4.2 Hz provides predictable response for rapid yet stable directional control. Together these parameters define the operating envelope without adding unnecessary complexity.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Degree Of Protection
IP65
Duty Cycle
100%
Electrical Connector
DIN EN 175301-803 (K4)
Installation Position
Any
Insulation Class (dc)
F
Max Coil Surface Temperature
120 °C
Max Switching Frequency (dc)
4.2 Hz
Maximum Flow (dc)
80 l/min
Maximum Operating Pressure (a/b/p)
350 bar
Maximum Tank Port Pressure (t, Dc)
210 bar
Mounting Interface
ISO 4401-03-02-0-05
Nfpa Mounting Pattern
D03
Nominal Power (dc)
30 W
Nominal Voltage
24 V DC
Voltage Tolerance
±10%
1620 Old Apex Road
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