H7 SERIES
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 (for charging).
Automatic functions:
- Thread trimming
- Needle positioning
- Start and end bartacks
- Presser foot lifter
The dual feed system (lower feed and upper walking foot) ensures perfect feeding of the upper and lower layers of stitched materials. The machine features an easy-to-read operating panel built into the head and an LED backlight near the needle bar (with adjustable intensity).
Technical specifications:
- Sewing speed: up to 2500 stitches/min
- Stitch length: up to 8 mm
- Presser foot lift: up to 15 mm (manual 7 mm)
- Needle system: DPx17 20-23#
| Model | Needles | Number of threads | Stitch length (mm) | Presser foot lift (mm) | Sewing speed: stitches / min |
|---|---|---|---|---|---|
| H7-C | DPx17 20-23# | 2 | 8 | 7-15 | 2500 |
Smart Seam System
The smart seam system, based on modern thread tension technology, ensures high-quality stitching without puckering or knots when going over thickened seams.
More Power
The engine has increased power. It provides high torque and excellent dynamic performance.
