Rexroth 4WREE Proportional Valve | 4WREE10 4WREE6 | 4WREE10E1-75-2X/G24K31/A1V | Integrated OBE

Rexroth 4WREE Series High-Performance Proportional Valves with OBE

Product Overview:

The Rexroth 4WREE Series is a direct-operated proportional directional valve designed for closed-loop control applications requiring high precision and dynamic response. Featuring Integrated On-Board Electronics (OBE) and an Inductive Displacement Transducer (LVDT), this valve provides full closed-loop control of the spool position. This configuration ensures exceptionally low hysteresis and high repeatability, making it the premier choice for injection molding, woodworking machinery, machine tool manufacturing, and precise actuator positioning.

Featured models include the 4WREE6 (Size 6), 4WREE10 (Size 10), and the specific configuration 4WREE10E1-75-2X/G24K31/A1V.

Key Technical Advantages:

• Integrated OBE Controller: Built-in electronics (OBE) eliminate the need for external amplifiers. Pre-calibrated at the factory for gain and null point, allowing for “plug-and-play” operation.

• Inductive Spool Feedback: The LVDT sensor monitors spool position in real-time, automatically compensating for flow-force disturbances to ensure a linear relationship between input and output.

• Superior Dynamics: The 2X design sequence optimizes solenoid thrust, providing rapid step response times and high frequency bandwidth.

• Versatile Spool Options: Available with linear, symmetric, or asymmetric flow characteristics (e.g., W50, W75) to match various actuator speeds and load requirements.

Detailed Specifications & Parameters:

• Core Series: Rexroth 4WREE Series (Size 6, Size 10).

• Featured Model Matrix:

  • 4WREE10E1-75-2X/G24K31/A1V (Core Spec: E1 function, 75L flow)

  • 4WREE10W50 / 4WREE10W75 (W-type symmetric spool, 50L/75L flow)

  • 4WREE6 Series (Size 6, high-precision low-flow variant)

• Core Performance Specs:

  • Nominal Sizes: NG6 (Size 6) and NG10 (Size 10).

  • Max Operating Pressure: Up to 315 Bar at ports A, B, and P.

  • Rated Flow: Ranges from 32 L/min to 75 L/min (at $\Delta p = 10 \text{ Bar}$).

  • Control Signal: A1 interface (±10V analog) or F1 (4-20mA).

  • Supply Voltage: G24 (24V DC).

  • Electrical Interface: K31 (Standard 7-pin connector).