JACK C7-4 Auto

The Jack C7‑4 Auto is an advanced 4‑thread industrial overlock sewing machine engineered for professional garment production, tailoring workshops, and textile manufacturing environments. Built with cutting‑edge automation and intelligent material recognition, it seamlessly combines high‑speed performance, smart fabric handling, and robust industrial durability to deliver precise, professional overlock seams on a wide range of fabrics.

Powered by advanced AI‑assisted technology, the C7‑4 automatically detects fabric thickness changes in real time and adjusts presser foot pressure and feed dog force to ensure consistent stitching — even over joints, thick seams, and variable materials. This smart sensing capability makes it extremely versatile for sewing cottons, knits, denim, and technical textiles, while maintaining speed and stitch accuracy.

This model includes integrated photocell sensors and offers three operation modes — automatic, semi‑automatic, and manual — giving operators flexibility based on workflow and production needs. In automatic mode, the machine starts and stops through fabric detection alone, activating thread cutting and presser foot lift without foot pedal use. Built‑in voice guidance and digital controls simplify operation and troubleshooting, while direct‑drive motor efficiency ensures smooth, quiet, and energy‑saving performance.

With a maximum sewing speed of up to 7,000 stitches per minute, digital presser foot lift up to 10 mm, and intelligent automatic cutting, the Jack C7‑4 Auto is ideal for high‑volume overlocking needs where quality, speed, and automation matter most.

Key Features & Benefits

• AI‑Enhanced Fabric Detection — Automatically senses thickness changes and adjusts presser foot pressure and feed rate for smooth, consistent stitches.

• Fully Automatic Operation — Photocell‑based automatic sewing with auto thread cutting and presser foot lift for hands‑free stitching.

• High‑Speed Output — Up to 7,000 stitches per minute for efficient production.

• Direct‑Drive Motor & Digital Controls — Quiet, stable, energy‑efficient performance with easy digital foot lift and voice guidance.

Technical Highlights (Typical)

• Model: Jack C7‑4 Auto (Jack URUS C7‑4‑M03/333)

• Thread Count: 4‑thread overlock

• Needles: 2

• AI Fabric Sensing: Yes — adapts feed & pressure in real time

• Photocell Sensors: Yes — for auto start/stop & auto functions

• Presser Foot Lift: Up to 10 mm digitally controlled

• Max Sewing Speed: ~7,000 SPM

• Digital Electric Cutter: Yes — short automatic cuts (~5 mm)

• Voice Guide & LED Light: Yes

• Operation Modes: Automatic / Semi‑Auto / Manual

Ideal Uses

✔ Professional garment production lines
✔ Overlocking seams on knitwear, shirts, dresses, and woven fabrics
✔ High‑volume tailoring shops seeking automation and speed