JACK JK-9820 - is a computerized buttonholing machine with one needle and two threads. The machine is capable of executing straight buttonholes or buttonholes with round head, the cut can be programmed to be executed before or after sewing. Optionally it is possible to sew round holes.

It has a control panel on which different stitch parameters can be programmed: button type, size and shape, cut, stitch speed.

Several types of buttonholes can be programmed in the machine's memory and can be sewn immediately without any mechanical adjustment, making it ideal for small series production where patterns are permanently changed.

Workspace is LED illuminated

The machine has a direct drive servomotor that works at 230V/50Hz

It has automatic thread cutting and automatic presser foot lifting

Maximum speed 2500 stitches per minute

Stitch length 0.5-2 mm

Stitch width 1.5-5 mm

The buttonhole length with the hole is adjustable between 8-50 mm and the straight buttonhole is between 5-50 mm

Round holes can be made with diameters of 2, 4 and 5 mm

Needle used DOx558

Preser foot lifting height 12 mm (optional 16 mm)

Requires compressed air supply from a compressor capable of delivering at least 40 liters of air per minute

Dimensions: 123x83x144 cm

Weight: 120 Kg