JACK H7 Lockstitch Machine

This single-needle automatic lockstitch machine is designed for sewing thicker materials (e.g., leather, upholstery), and is equipped with an energy-saving motor built directly into the machine head (Direct Drive system). This ensures quiet operation and low power consumption. A stepper motor controls the stitch length setting, bartacking, and presser foot lifting functions. This significantly reduces noise during bartacking and allows for precise stitch length adjustment to within 0.1 mm. Central lubrication (traditional oil pan). A USB port allows for connecting external devices such as a fan or phone (charging).

Automatic functions:

thread trimming

needle positioning

start and end bartacking

presser foot lifting

The dual feed (lower feed and upper – walking foot) ensures perfect feed of the upper and lower layers of stitched materials. The machine features an easy-to-read operation panel built into the head and an LED backlight near the needle bar (with adjustable brightness).

Technical specifications:

Sewing speed: up to 2500 stitches/min

Stitch length: up to 8 mm

Presser foot lift: up to 15 mm (7 mm manual)

Needle system: DPx17 20-23#