Rexroth 4WE10 Series Solenoid Directional Valve | 4WE10H 4WE10E 315Bar 120L/min

The 4WE10 Series solenoid-operated directional spool valves manufactured by Chengyuan Hydraulic are high-performance control components engineered to meet the industrial standards of Rexroth. Focused on models 4WE10H3X, 4WE10H5X, and 4WE10E51, this series functions as the “brain” of hydraulic systems, determining the movement accuracy of all actuators.

Chengyuan utilizes high-tensile cast iron housings and precision-ground spools to ensure minimal internal leakage even under high pressure (315 bar) and high flow (120 L/min) conditions. All valves follow the ISO 4401-05-04-0-05 mounting pattern, ensuring 100% original-place interchangeability with Rexroth. Each valve undergoes 100% simulated load condition testing to verify dynamic response times and the suction stability of the solenoids under high-frequency switching.

Technical Specifications :

• Brand Compatibility: Rexroth 4WE10 (Size 10 / NG10) Replacement

• Spool Symbol Options: Type E (All closed in center); Type H (All open in center)

• Component Series: 3X (30-39) / 5X (50-59 series)

• Max Operating Pressure (Ports A, B, P): 315 bar (4570 PSI)

• Max Backpressure (Port T): 160 bar (For DC solenoids)

• Max Flow Rate: 120 L/min (31.7 GPM)

• Control Voltage: G24 (24V DC)

• Electrical Connection: K4 (Individual connection with plug)

• Manual Override: N9 (With override button) / M (Hidden manual override)

• Fluid Compatibility: Mineral oil (DIN 51524), Phosphate ester fluids

• Fluid Temperature Range: -30°C to +80°C

Key Technical Advantages:

• High-Tensile Shell-Molding Housing: The valve body is cast using advanced shell-molding techniques with CFD-optimized flow galleries. This reduces internal pressure drop ($\Delta P$), minimizing heat generation and improving overall system efficiency.

• Wet-Pin Solenoid Technology: Equipped with high-performance wet-pin DC solenoids. The armature moves within the oil, providing excellent heat dissipation and a hydraulic cushioning effect, which drastically reduces mechanical impact and noise during switching.

• Micron-Level Spool Clearance: Spools and valve bores are finished via high-precision honing. The clearance is maintained at the micron level, ensuring optimal spool mobility (preventing hydraulic lock) and superior sealing performance at 315 bar.

• Reinforced Return Spring Matrix: Utilizing premium Si-Cr alloy steel, the return springs ensure the spool returns to the center position instantly and accurately once de-energized, preventing unintended actuator movements.

Application Areas:

• Heavy-Duty Machine Tools: Control of feed mechanisms and auxiliary clamping circuits.

• Injection Molding Machines: Precision direction control for mold opening/closing and ejection.

• Metallurgical Equipment: High-pressure logic control for tilting mechanisms and hydraulic shears.

• Mobile Machinery: Auxiliary hydraulic control for sanitation trucks and road construction equipment.

Expert Maintenance Tips:

• Solenoid Coil Protection: Never energize the solenoid coil when it is not fully installed on the valve tube. This will cause an inductive surge that leads to coil burnout.

• Contamination Control Protocol: As the 4WE10 is a precision spool valve, maintain a system filtration level of at least ISO 4406 20/18/15. Hard particles can erode the spool “metering edges,” leading to increased leakage or sticking.

• Manual Override Best Practices: The manual override buttons (N9/M) are designed for commissioning or emergency use only. Avoid using sharp tools to hit the button, which can damage the manual rod seals and cause external leakage.