Rexroth 4WREE Valve | R900927233 | 4WREE10W75 | R900927230 | 4WREE10E75 | Proportional Valve

Rexroth 4WREE Series Proportional Directional Valves with OBE

Product Overview:

The Bosch Rexroth 4WREE series is an industrial-grade, direct-operated proportional directional control valve featuring Integrated On-Board Electronics (OBE). Designed for hydraulic systems requiring high dynamic response and minimal hysteresis, these valves utilize an internal inductive position transducer (LVDT) for closed-loop spool position feedback. For precision machine tools, injection molding equipment, or general industrial automation in 2026, the 4WREE series remains the industry benchmark for precise flow and directional control.

Featured Rexroth Part Numbers: R900927233 (4WREE10W75-2X) and R900927230 (4WREE10E75-2X).

Key Technical Advantages:

• Integrated OBE Digital Electronics: The proportional amplifier is integrated directly onto the valve body, supporting standard A1 ($\pm 10\text{V}$) command inputs. This design saves control cabinet space and significantly enhances electromagnetic interference (EMI) resistance.

• Closed-Loop Position Feedback: The spool position is monitored in real-time via an LVDT sensor. This closed-loop architecture automatically compensates for system pressure fluctuations or variations in oil viscosity, ensuring exceptional repeatability.

• Versatile Spool Functions (W/E): * W-Type Spool (e.g., R900927233): Specific flow distribution logic ideal for symmetrical or asymmetrical loads.

  • E-Type Spool (e.g., R900927230): Designed for standard reversal and throttling, providing smooth acceleration and deceleration.

• 2X Design Sequence Platform: Utilizing the proven 2X series design, internal fluid dynamics are optimized to reduce pressure losses and increase spool frequency response.

• Rugged Electrical Interface: Equipped with a standard 6-pin + PE (K31) industrial connector with IP65-rated protection for reliable operation in harsh environments.

Detailed Specifications & Model Matrix:

• Featured Part Number Matrix:

  • R900927233: Model 4WREE10W75-2X/G24K31/A1V, Size NG10, W-spool logic.

  • R900927230: Model 4WREE10E75-2X/G24K31/A1V, Size NG10, E-spool logic.

• Technical Specifications:

  • Nominal Size: Size 10 / NG10 (Cetop 5).

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

  • Rated Flow: 75 L/min (at $\Delta p = 10 \text{ bar}$).

  • Supply Voltage: 24V DC (G24).

  • Command Signal: $\pm 10\text{V}$.