VLC & VSC Series: Smooth, Stable Coil Stock Feeding for High-Speed Lines

In high-speed stamping and precision manufacturing, coil stock behavior can make or break your throughput. Loose loops flap, scratch, and kink; tight loops starve the feeder. Sankyo Automation’s VLC (Loop Controller) and VSC (Loop Controller + Straightener) Series tame that chaos—delivering smooth, consistent material to your feeder so your press can run the way it should: fast, accurate, and repeatable.

Why loop control matters

Traditional loop setups leave material “free to misbehave.” The NC Loop Controller changes the game by restricting the material’s freedom of motion and actively shaping the loop in real time.

• Excellent stability: Keeps material from flapping even at high feed speeds.

• Optimized loop: Sensors and a dedicated servo controller maintain an ideal loop geometry across speed ranges.

• Easy to adjust: A touch-panel display lets operators modify feed parameters quickly and confidently.

• Performs leveling (VSC only): Integrated straightening removes kinks and winding tendencies before they reach your feeder.

How it works

At the heart of the VLC/VSC is Sankyo’s NC Loop Controller. Servomotors precisely control the rotation of the drive rolls, while sensors monitor loop shape and feed dynamics. The servo controller then stabilizes the loop to an optimal profile—reducing flapping and delivering material without scratches, creases, or markings. The result is improved part quality and higher overall line productivity. And thanks to a small footprint, installation is refreshingly straightforward.

Applications

• Motor cores

• Connectors

• IC lead frame presses

• Any high-speed coil-fed process where surface quality and feed consistency matter

VLC vs. VSC at a glance

• VLC Series – Advanced loop control with servo feedback for stable, high-speed feeding and surface protection.

• VSC Series – Everything in VLC, plus straightening to correct coil set, kinks, and winding tendencies before they become defects.

Designed for speed, built for quality

By delivering a stable, optimized loop to the feeder, VLC/VSC helps you:

• Run faster without starving the press

• Protect surfaces—no scratches, creases, or tell-tale roll marks

• Reduce jams and rework for better OEE

• Shorten setup time with intuitive touch-panel adjustments

Backed by world-leading motion technology

The VLC and VSC Series come from Sankyo Automation, the worldwide leader in cam indexer technology and a pioneer in high-speed, high-precision motion control. Our rotary indexing and motion solutions power manufacturing systems across the United States, Europe, and Central & South America. That reputation is built on disciplined process control and a culture of continuous improvement—doing better today than we did yesterday.

Ready to stabilize your coil line?

Whether you’re battling loop flapping, surface defects, or inconsistent feeding, the VLC and VSC Series are purpose-built to help you push speed and quality. Let’s talk about your line requirements and see which model is the best fit.

Downloads: Spec sheets, models, and integration guides available upon request.

Related tech: Explore Sankyo’s cam indexers and high-precision rotary systems to build a faster, more reliable production cell end-to-end.