A4C SERIES
JACK A4C Lockstitch
Single-needle lockstitch machine with automatic functions, bottom feed, and an energy-saving motor built into the machine head (Direct Drive), which ensures quiet and reliable operation and reduced power consumption. The machine has a built-in operating panel.
Automatic functions:
- cutting threads
- lifting the presser foot
- bartacking (fastening) while sewing
- needle positioning
The machine uses a stepper motor to control the stitch length setting, bartacking, and presser foot lift. This significantly reduces noise during bartacking and allows for precise stitch length adjustment to within 0.1 mm. Central lubrication (traditional oil pan) is provided. The machine features a bottom feed. A USB port allows for connecting external devices, such as a fan or phone (for charging).
Technical parameters:
- sewing speed: up to 5000 stitches/min
- stitch length: up to 5 mm
- presser foot lifting height: up to 13 mm
- three function buttons located near the needle bar: 1/2 stitch length, adding a stitch, bartacking
| Model | Application | Thread system | Number of threads | Stitch length (mm) | Presser foot lifting height (mm) | Sewing speed stitches/min |
|---|---|---|---|---|---|---|
| A4C-C | Light/medium sewing | DBx1 11-18# | 2 | 5 | 5-13 | 5000 |
| A4C-C-7 | Light/medium sewing | DBx1 11-18# | 2 | 7 | 5-13 | 3500 |
| A4C-CH-7 | Heavy sewing | DPx5 18-21# | 2 | 7 | 5-13 | 3500 |
| A4C-CHL-7 | Heavy Sewing (Large Looper) | DPx5 18-21# | 2 | 7 | 5-13 | 3500 |
NTB System
The “Octopus Nine-brain” artificial intelligence chip optimizes the material feed force. It works in conjunction with innovative thread guiding technology, achieving perfect correlation between material transport and thread take-up operation.
“Octopus Nine-brain” Artificial Intelligence Chip
The “Octopus Nine-brain” artificial intelligence chip intelligently perceives and responds to changes in the thickness of the sewn material in real time. Precisely adjusts the material feed force.
