Rexroth 4WE6 Series Solenoid Valve | 4WE6D 4WE6F 4WE6E | CETOP 03 Directional Valve |

The 4WE6 Series solenoid-operated directional spool valves by Chengyuan Hydraulic are high-performance components fully compatible with Rexroth industrial standards. Featuring the Size 6 (CETOP 03) mounting interface, this series includes precision models such as 4WE6D61B/CG24N9Z4 and 4WE6F61B/CG24N9Z5L. Driven by high-efficiency wet-pin DC solenoids, these valves offer high switching frequency, low impact, and superior sealing performance. As a hallmark of Chengyuan quality, all 4WE6 valves provide 100% original-place interchangeability and undergo 100% simulated condition testing to ensure absolute reliability at pressures up to 35MPa.

Technical Specifications :

• Core Models: 4WE6D, 4WE6E, 4WE6F, 4WE6G, 4WE6J

• Mounting Interface: CETOP 03 / ISO 4401-03 / DIN 24340

• Max Operating Pressure (Ports P/A/B): $35\text{ MPa (350 bar / 5075 psi)}$

• Max Operating Pressure (Port T): $21\text{ MPa (210 bar / 3050 psi)}$

• Max Flow Rate: Up to $80\text{ L/min}$ (Depending on spool function)

• Solenoid Voltage: DC 24V (G24), DC 12V (G12), AC 220V (W230)

• Electrical Connection: Individual plug-in connectors (Z4, Z5L with LED)

• Switching Frequency: Up to $15,000\text{ cycles/hour}$

• Seal Material: NBR (Standard), FKM (Optional for high temps)

Key Technical Advantages:

• High-Pressure Cast Iron Body: The valve body is cast using high-strength gray iron with resin-sand molding, ensuring wide and smooth internal galleries. This reduces pressure drop by approximately $10\%$ at a flow of $60\text{ L/min}$ compared to standard valves, minimizing energy loss.

• Micro-Honed Spool Technology: Spools are crafted from premium alloy steel with induction hardening and micro-honing. The clearance between the spool and body is maintained within $0.005\text{ mm}$, ensuring high sensitivity while keeping internal leakage to an absolute minimum.

• Full-Power Wet-Pin Solenoids: The armature operates fully immersed in oil, providing automatic lubrication and hydraulic damping. This design reduces noise from metal-to-metal impact and maintains low coil temperatures even during continuous, high-frequency switching.

• Multi-Functional Manual Override: Comes standard with a protected manual push-rod for control during power outages or system commissioning. The Z5L models feature transparent plugs with indicator LEDs for rapid on-site electrical diagnostics.

Application Areas:

• CNC Machine Tools: Controlling slide movement, spindle clamping, and tool turret indexing.

• Hydraulic Power Units (HPU): The core directional control for small power packs and lifting platforms.

• Plastic Machinery: Logic control for auxiliary circuits and core action switching in injection molding.

Expert Maintenance Tips:

• Tightening Torque: Always use a torque wrench for mounting bolts; the recommended torque is $8.9\text{ Nm}$. Over-tightening can lead to micro-distortion of the valve body, potentially causing the spool to stick.

• Fluid Cleanliness: Although the 4WE6 is robust, we recommend maintaining system filtration at $10\mu\text{m}$ or better to prevent fine particles from entering precision clearances.

• Voltage Stability: Ensure the input voltage to the coils fluctuates within $+5\%\text{/}-10\%$ of the rated value to prevent overheating or insufficient electromagnetic force.