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Rexroth 4WE6E70HG24N9K4
Product Name: NG6 Solenoid-Operated Directional Spool Valve, Symbol E
Introduction: This is a direct-acting four-way solenoid directional valve for hydraulic systems. It controls flow direction to actuators by shifting an internally ground spool inside a subplate-mounted cast body. It is used in machine tools, injection molding, presses, material handling and general industrial hydraulics.
Detailed content
Technical Specifications:
- Size: NG6, CETOP 3, ISO 4401-03-02-0-05
- Spool function: symbol E, all ports closed in neutral
- Actuation: dual wet-pin solenoids, spring centered
- Coil voltage: 24 V DC
- Maximum pressure at P, A, B: 31.5 MPa
- Maximum tank pressure: 21 MPa depending port
- Flow rating: up to 60 L/min nominal, up to 80 L/min in extended catalog conditions
- Fluid types: HL, HLP, HVLP, HEES, HETG
- Fluid temperature: -20 to 60 °C
- Coil power: approximately 25 W, continuous duty
- Response: energizing 25 to 40 ms, de-energizing 20 to 35 ms
- Protection: IP65 with proper DIN connector
- Weight: approximately 1.8 kg
Material Composition: High-strength cast steel body, hardened alloy-steel spool, steel solenoid housings, nitrile or fluorocarbon seals, alloy spring steel return springs.
Structural Features: Monoblock subplate body, precision-matched spool and bore, replaceable wet-pin coils, concealed manual override, standard ISO subplate bolt pattern, DIN 43650/EN 175301 connector with LED and surge protection depending code.
Working Principle: Energizing a solenoid pushes the spool against the centering spring. Port connections change so pressure flows to one actuator line while return flows to tank. In neutral, all ports are blocked. Manual override moves the spool mechanically for commissioning without electrical power.
Application Scenarios: CNC machine-tool hydraulics, injection-molding machines, metallurgical systems, packaging machinery, press cylinders, automated production hydraulics.
Installation Requirements: Mount on a standard NG6 subplate with clean, flat sealing surface, tighten bolts to Rexroth torque tables, use 24 V DC with correct polarity and surge protection, fill wet-pin chamber with clean hydraulic oil, and connect DIN plug fully for IP65.
Usage Precautions: Maintain oil cleanliness to the valve specification, avoid sustained pressure above 31.5 MPa, never energize coils at overvoltage, use manual override only for test purposes, and inspect seals and spool wear during scheduled maintenance.
