Automatic Thread Trimmer
The thread trimmer features vertical blade adjustment and a movable lower blade screw, offering a wide trimming range, easier operation, extended lifespan, and 100% precise cutting.
Small Cylinder-Bed Coverstitch Machine
An exceptionally small cylinder arm with a circumference of just 180 mm, perfect for sewing children’s t-shirt sleeves.
Anti-Tangle Thread Cam
Prevents thread from tangling in the cam. The externally mounted cam can be opened for easy threading—convenient, fast, and precise.
Efficient Cross-Seam Fabric Feeding
Optimized presser foot angle ensures smooth clearance over thick cross-seams and uniform stitch formation.
Direct-Drive Motor
A built-in cooling fan accelerates heat dissipation, reducing electronic wear and extending motor lifespan while saving up to 71% in energy.
JACK JK-8670BDII-01CB/UT is a 3-needle, 5-thread cylinder-bed interlock (coverstitch) machine with top and bottom cover thread, featuring a narrow cylinder (180 mm circumference), built-in servomotor, and automatic thread trimming (UT) functions for knitwear.
Technical Specifications
| Model | Jack JK-8670BDII-01CB/UT |
| Function | Plain Seaming |
| Needle | UY128GAS #11-14 |
| No. of Needles | 3 |
| No. of Threads | 5 |
| Stitch Length | 1.5-3.6mm |
| Stitch Width | 5.6 / 6.4 mm |
| Differential Ratio | 0.8-1.4 |
| Presser Foot Lifting Height | 6.2mm |
| Max Speed | 4500 s.p.m |
| Volume | 680 x 420 x 630 mm |
| Weight | 50kg / 60kg |
