Rexroth 081140459 4WRLE25E4-350SJ-3X/G24K0/A1M – Pilot-operated servo proportional directional valve

Product Description

Part No. 0811404459, Model 4WRLE25E4-350SJ-3X/G24K0/A1M, is a pilot-operated servo proportional directional valve with On-Board Electronics (OBE) from Bosch Rexroth, belonging to the 4WRLE 3X series, nominal size NG25. The main spool is equipped with electrical position feedback and integrated amplifier electronics inside the valve, so no external amplifier is required. It accepts ±10V analog command signal to precisely regulate hydraulic flow rate and direction, featuring fast dynamic response, low hysteresis and high repeatability. In case of power loss, the spring-centered spool returns to neutral position automatically with fail-safe protection, designed for high-pressure and high-flow electro-hydraulic closed-loop servo systems.

Specifications

• Model: 4WRLE25E4-350SJ-3X/G24K0/A1M
• Part No.: 0811404459
• Product Type: Pilot-operated Servo Proportional Directional Valve (OBE On-Board Electronics)
• Nominal Size: NG25
• Series: 3X
• Rated Flow: 350 L/min at 10 bar pressure drop
• Max Operating Pressure: 350 bar
• Command Signal: ±10V analog voltage (A1 interface)
• Power Supply: 24V DC
• Mounting: Plate mounting, ISO4401 standard mounting pattern
• Spool Feedback: Built-in electrical position feedback for main spool
• Fail-safe: Spring centering, spool returns to neutral upon power loss
• Weight: Approx. 19 kg
• Certifications: CE, RoHS, EMC compliance
• Operating Ambient Temperature: -20℃～+60℃
• Fluid: Mineral hydraulic oil, recommended viscosity 2.8～500 mm²/s

Application

It is applied for high-precision high-flow electro-hydraulic closed-loop control. Widely used in metal forming hydraulic presses, large material fatigue test benches, forging machinery, large injection molding clamping systems, wind power test benches and marine hydraulic test rigs. It performs high dynamic closed-loop control of position, force and velocity for synchronous lifting, press fitting, bending, tensile fatigue testing and other processes.

Similar Series Models

4WRLE10W6-85SJ-3X/G24K0/A1M, 4WRLE16E4-220SJ-3X/G24K0/A1M, 4WRLE25EZ-350SJ-3X/G24K0/A1M, 4WRLE25WZ-350SJ-3X/G24K0/A1M, 4WRLE27E4-500SJ-3X/G24K0/A1M