An adjustable mechanism makes it easy to set the differential feed ratio between the upper and lower feed dogs, ensuring smooth handling of various fabrics.
Voice Guidance
Learn how to use new features with the built-in voice guide. In case of errors, press the VOICE button for instant troubleshooting assistance and step-by-step solutions.
Automatic Thread Trimmer
Equipped with photocells, the electronic trimmer automatically activates at the start and/or end of the seam, ensuring a clean finish without manual intervention.
Automatic Presser Foot Lifter
Electronically controlled, the presser foot automatically lifts before and/or after sewing via built-in photocells, boosting efficiency and simplifying operation.
Acceleration and Deceleration
Increased responsiveness with 14.3% faster reaction time: acceleration from 0 to 5,500 rpm in just 100 ms and deceleration to zero in 180 ms for precise and efficient control.
Three Sewing Modes
Choose from three flexible operation modes:
• Manual: Full control via pedal.
• Semi-automatic: Pedal for sewing, automatic thread trimming and presser foot lift via photo sensors.
• Automatic: Fully controlled by photocells (no pedal required).
Wide Adaptability
The dual feed system improves fabric handling, allowing you to easily and accurately sew a wide range of materials with varying densities.
Mesh Fabric Mode
Prevents false triggers when sewing thin or transparent fabrics such as tulle or organza by disabling photocell activation until proper contact with the fabric is detected, ensuring flawless stitch quality from the very first stitch.
Short Thread Trimming
The automatic electric trimmer driven by photo sensors precisely trims the thread (8 mm in front and 5 mm in the back), minimizing waste and eliminating the need for manual trimming.
Industry 4.0
Thanks to the built-in Wi-Fi module, you can remotely monitor performance and configure equipment parameters via the app. Note: One Jack Gateway is required for every 50 machines.
Jack C5T-4-M03/333 is a high-speed computerized 4-thread overlock with a direct-drive servomotor, walking foot (top feed), and intelligent control. Equipped with a built-in differential feed that ensures superior performance when sewing dense materials. Combining durability, precision, and ease of use, this overlock offers powerful feeding performance, advanced anti-layer-shifting technology, and smart automated functions for efficient seaming of long pieces.