Rexroth 4WRLE16 & 4WRPEH6 Servo Valve | R901125221 | 4WRLE16V200L | 4WRPEH6C3B12L

Rexroth 4WRLE & 4WRPEH Series High-Dynamic Servo Proportional Valves

Product Overview:

The Rexroth 4WRLE and 4WRPEH Series represent the pinnacle of industrial hydraulic control. The 4WRLE16 is a pilot-operated high-performance proportional valve with position feedback, specifically designed for closed-loop control requiring large flow rates and extreme dynamic response. Conversely, the 4WRPEH6 is a direct-operated servo proportional valve, renowned for its servo-grade dynamics and minimal hysteresis, making it ideal for precision positioning tasks.

Featured models include the high-flow pilot variant 4WRLE16V200L-3X (R901125221) and the high-precision direct variant 4WRPEH6C3B12L-2X.

Key Technical Advantages:

• Integrated OBE Digital Amplifier: On-Board Electronics (OBE) eliminate external wiring for amplifiers, ensuring noise-resistant signal processing and factory-calibrated precision.

• Closed-Loop Position Feedback (LVDT): Spool displacement is monitored in real-time via an inductive transducer, automatically compensating for flow-force disturbances to achieve micron-level accuracy.

• Superior Dynamic Bandwidth: Both pilot and direct-operated stages offer rapid step response times, meeting the high-frequency switching demands of injection molding, die-casting, and test rigs.

• Versatile Adaptation: Supports standard analog signals (±10V or 4-20mA) and features a zero-lap spool design for smooth, linear transitions through the neutral position.

Detailed Specifications & Parameters:

• Core Series: Rexroth 4WRLE (Size 16) & 4WRPEH (Size 6).

• Featured Model Matrix:

  • R901125221 (Model: 4WRLE16V200L-3X/G24K0/A1M)

  • 4WRPEH6C3B12L-2X/G24K0/A1M (High-dynamic direct-operated)

• Core Performance Specs:

  • Nominal Sizes: NG16 (Size 16) and NG6 (Size 6).

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

  • Rated Flow: 200 L/min for 4WRLE16; 12 L/min for 4WRPEH6 (at $\Delta p = 10 \text{ Bar}$).

  • Design Sequence: 3X (Pilot) and 2X (Direct).

  • Supply Voltage: G24 (24V DC).

  • Electrical Interface: K0 (6P+PE) or A1M (M12 adaptation).