Jack K7 · Simple Type · 5.6mm
A professional finish, right around the garment.
The Jack K7 cylinder-arm coverseamer brings industrial coverstitching to T-shirt hems, sleeves and tubular garment work.
Its 5.6mm, three-needle, five-thread configuration produces top-and-bottom coverseams, while the cylinder arm gives you room to guide sewn garment sections around the sewing area.
Direct-drive servo power, adjustable speed and a built-in LED help make everyday garment finishing easier to control.
Made for garment finishing
Space to turn. Control to finish.
Hems and sleeves
Guide T-shirt hems, sleeve openings and similar tubular sections around the cylinder arm instead of managing all the fabric on a flat bed.
Top-and-bottom coverage
The five-thread configuration adds covering thread above and below the seam for a distinctive coverseam finish on suitable knit garments.
Production or smaller runs
Set a comfortable working speed for your fabric and experience. The industrial platform suits garment workrooms, alterations and repeat finishing operations.
Practical operator control
Set up for the fabric in front of you.
The K7 combines servo speed control with an intelligent feeding system designed to respond to changes in fabric thickness. This helps when moving between thinner sections and layered seams.
- Adjustable speed: choose a manageable pace for guiding and finishing.
- LED sewing light: illuminates the needle and fabric area.
- Accessible tension controls: tune stitch balance for your chosen thread and fabric.
Always test the stitch on an offcut first. Needle choice, tension and feeding settings still matter, especially on stretch fabrics and seam crossings.
Simple Type configuration
Focus on the coverseam.
This listing is for the K7 Simple Type, 5.6mm cylinder-arm machine—not the automatic thread-trimming version. It is a dedicated coverseamer for finishing work, rather than an overlocker that trims the fabric edge.
Machine specifications
| Model | Jack K7 Simple Type · K7-D-01GBx356 |
|---|---|
| Machine bed | Cylinder arm |
| Stitch configuration | 3 needles / 5 threads; top-and-bottom coverseam |
| Needle gauge | 5.6mm |
| Maximum speed | Up to 6,000 stitches per minute; working speed depends on material and operation |
| Drive and lighting | Direct-drive servo motor; LED sewing light |
| Needle system | UYx128 / DVx43 |
| Warranty | 1-year return-to-base warranty |
Supplied ready for your workroom
Machine, table and motor included.
Supplied built up with its table, motor, thread stand and accessories. The stand is mounted on wheels for easier positioning in your workroom.
Included accessories comprise oil, a screwdriver and needles.
Browse Coats Astra sewing thread and industrial coverseam needles for your next project.
Order online for your workroom
Buy through the normal Add to Cart option above. Nationwide New Zealand freight can be arranged for delivery outside Auckland.
Explore more industrial coverseam machines from Direct Sewing.