NC Servo Feeder RNC (0.3-3.2MM)

The SUNRUI RNC series is a heavy-duty NC servo feeder engineered for precision coil feeding in stamping, progressive die, and metal forming applications. It handles material thickness from 0.3mm to 3.2mm and widths up to 1300mm, delivering ±0.15mm feeding accuracy for consistent, high-quality stamped parts.

Precision You Can Measure

At the heart of the RNC is a Yaskawa servo motor and Mitsubishi PLC control system, delivering programmable feed lengths up to 9999.99mm with 20 preset programs for flexible production runs. The ±0.15mm repeatable accuracy minimizes scrap from misfeeds, extends die life, and ensures part consistency across full production runs.

Built for Heavy-Duty Applications

The RNC series is specifically designed for wider and thicker coil materials compared to standard servo feeders. Its robust mechanical construction—stabilized steel frame with high-concentricity structure—ensures stable feeding performance even under demanding production conditions. All rollers are heat-treated, hard-chrome plated, and precision-ground to HRC60-62°, delivering exceptional wear resistance and extended service life.

Advanced Control for Flexible Production

The user-friendly HMI touchscreen allows operators to input up to 20 different feed lengths directly on the display. With maximum feed length of 9999.99mm and speeds up to 30m/min, the RNC adapts to both short-run batch production and long-run continuous stamping operations.

Versatile Installation Options

The RNC can be mounted directly to your press via a mounting plate, or installed with a separate bracket for enhanced stability. It integrates seamlessly with decoiler straighteners and stamping presses to form a complete, automated stamping line

The SUNRUI RNC series NC servo feeder is widely deployed across stamping applications that require handling of wider and thicker coil materials (0.3-3.2mm, up to 1300mm width) with ±0.15mm precision.

The configuration of metal sheet stamping line

Step-1: Decoiler straightener machine, Loading coil and uncoilling coil and straigthening the Coil strips.

Step-2: NC Servo Roll Feeder machine, Feed coil strips to press machine.

Step-3: Power pres machine with the moulds, pressing to the end product

● Reliable Mechanical Design

The RNC series features a stabilized steel frame construction with high-concentricity mechanical structure, specifically engineered for wider coil widths (up to 1300mm) and thicker materials (up to 3.2mm). All feed rollers undergo heat treatment, hard chrome plating, and precision grinding to achieve HRC60-62° surface hardness. The gear-driven upper roll incorporates anti-backlash features to ensure non-slip, positive feeding. Shot blasting surface treatment enhances paint adhesion and extends machine lifetime.

● Longer service life & lower maintenance cost

The RNC series is built with CE-certified components from globally recognized brands—including Japan Mitsubishi PLC, Japan Yaskawa servo motor, and full sets of Japanese low-voltage electrical components. This proven combination reduces maintenance frequency, minimizes unplanned downtime, and extends the overall service life of the equipment—even under heavy-duty, continuous production conditions.

● Advance and Smart control systems

The RNC is equipped with a computerized numerical control system powered by Mitsubishi PLC (Japan), with optional Siemens (Germany) configurations. The intuitive HMI touchscreen display allows operators to directly input up to 20 different feed lengths, with programmable feed lengths up to 9999.99mm. This smart control system simplifies setup, reduces changeover time, and enables flexible production runs with minimal operator intervention.

● Accuracy and reliable feeding performance

High-resolution Yaskawa servo motors combined with low-inertia servo drives deliver reliable ±0.15mm feeding precision across the full 1300mm width range. The Mitsubishi PLC program ensures consistent indexing accuracy across high-speed stamping operations, minimizing scrap from misfeeds, reducing die wear, and improving first-pass yield. Whether running short batches or long production runs with thicker materials, the RNC maintains repeatable accuracy cycle after cycle.