Rexroth 4WRPH Servo Valve | 0811404039 | 4WRPH6 | 0811404061 | 4WRPH10

Rexroth 4WRPH Series High-Dynamic Proportional Servo Valves

Product Overview: The Rexroth 4WRPH Series is a direct-operated proportional directional valve with servo-grade performance, specifically engineered for closed-loop systems requiring extreme dynamic response and precision position or pressure control. Covering NG6 (Size 6) and NG10 (Size 10) nominal sizes, its primary advantage lies in the integrated electrical feedback (LVDT) system, which monitors spool position in real-time to eliminate mechanical lag. Whether applied in precision presses, plastic machinery, or simulation platforms, the 0811404039 and 0811404061 deliver exceptional linearity and accuracy at pressures up to 315 Bar.

Featured models include the 4WRPH6C4B40L-20/G24Z4/M and the high-flow 4WRPH10C4B100L-20/G24Z4/M.

Key Technical Advantages:

• Direct-Operated Speed: The proportional solenoid actuates the spool directly, providing a high frequency response suitable for dynamic operational cycles.

• Precision Electrical Feedback (LVDT): Internal position sensors achieve closed-loop spool control with hysteresis less than 0.1%.

• Zero-Overlap Spool Design: Servo-quality spool manufacturing ensures excellent linear flow control near the null position.

• Industrial Reliability: The Series 20 design optimizes internal flow paths to minimize flow force interference, ensuring long-term stability.

Detailed Specifications & Parameters:

• Core Series: Rexroth 4WRPH Series (NG6 & NG10).

• Featured Model & Part Number Matrix:

  • 4WRPH6C4B40L-20/G24Z4/M (Part No: 0811404039) – Size 6, Flow 40 L/min.

  • 4WRPH10C4B100L-20/G24Z4/M (Part No: 0811404061) – Size 10, Flow 100 L/min.

• Core Technical Specs:

  • Max Operating Pressure: Rated up to 315 Bar.

  • Supply Voltage: G24 (24V DC).

  • Electrical Connection: Z4 (7-Pin) standard aviation connector.

  • Spool Function: C4 (4-way, zero overlap).