Rexroth 4WE Series Directional Valve | 4WE6 4WE10 | 4WE6Y 4WE10J 4WE6A | Solenoid Operated

The 4WE Series solenoid-operated directional spool valves from Chengyuan Hydraulic are premium control components fully compatible with Rexroth industrial standards. Widely utilized in machine tools, plastic machinery, metallurgy, and mobile hydraulics, the 4WE series features high-performance solenoids with various spool symbols (e.g., A, B, J, Y). It provides rapid response and reliable switching under high-pressure, high-flow conditions. Every valve undergoes 100% simulated condition testing for leakage and shifting pressure to ensure stable operation up to $350\text{ bar}$, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Core Model Series: 4WE6 (Size 6), 4WE10 (Size 10)

• Spool Function Examples: A, B, C, D, E, J, Y (Standard logic)

• Max Operating Pressure (Ports P, A, B): $350\text{ bar (5076 psi)}$

• Max Tank Pressure (Port T): $210\text{ bar (DC)} / 160\text{ bar (AC)}$

• Maximum Flow (4WE6): Up to $80\text{ L/min}$

• Maximum Flow (4WE10): Up to $120\text{ L/min}$

• Control Voltage: DC24V, AC220V, AC110V (with standard connectors & LEDs)

• Fluid Compatibility: Mineral oils (HL, HLP) to DIN 51524, Cleanliness ISO 4406 20/18/15

• Seal Material: NBR (Standard) / FKM (Optional)

Key Technical Advantages:

• Wet-Pin Solenoid for Extended Life: The armature operates entirely within the hydraulic fluid, providing automatic lubrication and damping the impact during switching. This design ensures millions of cycles with minimal mechanical wear and high reliability.

• Optimized Low Pressure Drop Geometry: The internal cast passages are optimized for larger cross-sections and smoother transitions. Compared to standard copies, the pressure drop is reduced by 15%, minimizing heat generation and improving energy efficiency.

• Precision-Engineered Spool Clearance: Spools are crafted from high-grade alloy steel, vacuum-quenched, and ground to micron tolerances. The tightly controlled radial clearance ensures smooth shifting while minimizing internal leakage for high-precision actuator control.

• Versatile Electrical & Manual Features: Equipped with a manual override button for commissioning without power. The solenoid coils can be rotated 360° to accommodate complex wiring layouts in tight hydraulic cabinets.

Application Areas:

• Plastic Machinery: Controlling mold opening, ejection, and injection logic in injection molding machines.

• Industrial Presses: Main directional control for press brakes, shearing machines, and hydraulic presses.

• Mobile Hydraulics: Multi-way control systems for refuse trucks, sweepers, and compact cranes.

Expert Maintenance Tips:

• Dry-Firing Prohibited: Wet-pin solenoids rely on oil for cooling. Continuous power-on without oil will lead to coil burnout due to excessive temperature rise.

• Voltage Stability: Ensure the power supply remains within $\pm 10\%$ of the rated voltage. Low voltage leads to incomplete armature stroke and noise, while high voltage shortens coil life.

• Mounting Surface Integrity: The mounting surface roughness must be better than $0.8\mu\text{m}$ with a flatness $\le 0.01\text{mm}$. Use calibrated torque to tighten mounting bolts to prevent valve body distortion and spool jamming.