The Jack E4S-4 is a high-speed 4-thread industrial overlock machine designed for strong seam construction and clean edge finishing. It features a built-in direct-drive servo motor, which delivers quiet operation, reduced vibration, and up to 70% energy savings compared to traditional clutch motor machines.
Engineered with a modern mechanical structure, this machine provides smooth and stable stitching performance for light to medium-weight fabrics such as knits, cotton, and woven materials. Its differential feed system ensures consistent fabric handling, preventing stretching or puckering during sewing.
The machine also includes an adjustable feed system (L/M/H selector), allowing easy adaptation to different fabric thicknesses, along with a user-friendly control panel and integrated LED lighting for improved efficiency and visibility.
Key Features
4-thread overlock for strong seam stitching + edge finishing
Direct-drive servo motor (quiet & energy efficient)
High-speed performance up to 5500 stitches/min
Differential feed system for smooth fabric control
Adjustable feed setting (Light / Medium / Heavy fabrics)
Integrated LED lighting for clear working area
Easy control panel with speed adjustment
Central lubrication system for durability
Quick Specifications
Machine type: 4-thread overlock
Maximum speed: up to 5500 stitches per minute
Stitch width: approx. 5 mm
Stitch length: up to 4–4.6 mm
Needle system: B27 / DC×27
Presser foot lift: up to 6 mm
Feeding system: Differential feed
Motor: Built-in direct drive servo
Application: Light to medium fabrics
