Jack W4 High-Speed Flatbed Interlock Sewing Machine

Description

Jack W4 High-Speed Flatbed Interlock Sewing Machine

High-speed computerized flatbed interlock machine designed for coverstitching, plain seaming, tape binding and hemming operations on knitted, stretch and elastic fabrics.

The Jack W4 is a versatile industrial interlock sewing machine featuring an integrated direct-drive motor and compact electronic control system. Designed for high productivity, the machine can achieve sewing speeds of up to 5,500 stitches per minute while delivering smooth and consistent stitch quality.

Its differential feed mechanism helps prevent fabric stretching, puckering and distortion during sewing, making it suitable for lightweight, medium-weight and stretch materials. The W4 can handle a wide range of fabrics, including knitted fabrics, jersey, Lycra and mesh materials.

Depending on the specific subclass, the Jack W4 can be configured for plain seaming, tape binding, covering stitch, bottom hemming and elastic attaching operations. Its integrated motor and control box provide a clean, compact and energy-efficient industrial sewing setup.

Key Features

• High-speed computerized flatbed interlock machine
• Three-needle, five-thread coverstitch configuration
• Maximum sewing speed up to 5,500 stitches/min
• Integrated direct-drive servo motor
• Differential feed system for smooth fabric handling
• Suitable for light, medium and heavy knitted fabrics
• Excellent performance on stretch and elastic materials
• Handles varying fabric thicknesses effectively
• Automatic thread trimming available on UT versions
• Built-in electronic control panel
• Integrated motor and control box for compact installation
• Suitable for plain seaming, tape binding and bottom hemming
• Smooth sewing over fabric thickness variations
• Built-in LED work light with adjustable brightness
• Low vibration and energy-efficient operation

Specifications

• Brand: Jack
• Class: W4
• Model: W4 Series
• Machine Type: High-Speed Flatbed Interlock / Coverstitch Machine
• Stitch Type: Coverstitch / Interlock
• Number of Needles: 3
• Number of Threads: 5
• Needle System: UY128GAS
• Recommended Needle Size: No. 11–14
• Stitch Length: 1.5–4.5mm
• Needle Gauge: 5.6mm / 6.4mm
• Differential Feed Ratio: 0.65–1.3
• Maximum Presser Foot Lift: 7mm
• Maximum Sewing Speed: 5,500 stitches/min
• Motor: Integrated Direct-Drive Servo Motor
• Lubrication: Automatic
• Machine Functions: Plain Seaming, Tape Binding, Coverstitching and Bottom Hemming
• Automatic Thread Trimming: Available on UT versions

Specifications may vary depending on the exact W4 subclass, including W4-D and W4-UT configurations.

Suitable For:
T-Shirts • Polo Shirts • Sportswear • Activewear • Knitwear • Underwear • Leggings • Stretch Garments • Children’s Wear • Jersey Fabrics • Bottom Hemming • Tape Binding • Coverstitching • Elastic Attaching