Small-Diameter Cylinder Bed
The narrow cylinder arm has a circumference of just 150 mm, making it ideal for sewing very small tubular garments.
Automatic Presser Foot Lifter
The spring-loaded automatic presser foot lifter provides wide adaptability to various fabric types.
Pneumatic Thread Trimmer (UTL)
Featuring a built-in photocell, it enables automatic thread trimming at the start and end of the seam, along with vacuum removal of excess chainstitches.
Waste Removal Device
Trimmings generated by the cutter knife are suctioned away, keeping the workspace clean and preventing debris buildup.
Direct-Drive Motor
A silent, low-vibration, and energy-efficient motor that ensures enhanced safety and quick assembly.
Zero Oil Leakage
A fully sealed design prevents oil leaks that could otherwise stain garments.
High-speed industrial 4-needle, 6-thread flatlock cylinder-bed machine designed for butt-seaming and creating flat, highly elastic seams. Ideal for medium-weight to heavy stretch fabrics such as sportswear, thermal underwear, and swimwear. The machine is equipped with a built-in energy-saving Direct-Drive servomotor, automatic presser foot lift, and a pneumatic thread trimming system with waste suction (AW1S).
Technical Specifications
| Model | Jack JK-8740C-460-02-D-AW1S |
| Number of Threads | 6 |
| Number of Needles | 4 |
| Needle Gauge (mm) | 1.4 – 3.0 |
| Differential Ratio | 1:0.6 – 1:1.5 |
| Presser Foot Lifting Height (mm) | 6.0 |
| Needle Bar Stroke (mm) | 30 |
| Max Sewing Speed (r.p.m) | 3200 |
| Fabric Trimming Method | Double-sided |
| Thread Trimming Method | Manual |
| Dimensions (mm) | 645 x 535 x 495 |
| Net/Gross Weight (kg) | 44.3 / 58.4 |
