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JACK® JK-A4C-C AI Smart Single Needle Direct Drive Fully Automatic Industrial Lockstitch Sewing Machine
FULLY ASSEMBLED | TABLE, MOTOR & STAND INCLUDED
Wheels are not included and are sold separately.
AI SMART TECHNOLOGY • DIRECT DRIVE • AUTOMATIC LOCKSTITCH
The JACK JK-A4C-C is a single-needle industrial lockstitch sewing machine developed for professional garment manufacturing and production environments requiring electronic control and automated sewing functions.
Its integrated direct-drive servo motor provides electronically controlled sewing operation, while the intelligent control system assists with machine adjustments and repetitive production tasks.
The model is promoted with JACK's NTB technology and Octopus Nine-Brain AI system, designed to support coordinated sewing operation and material handling.
Automatic thread trimming, presser-foot lifting, backtacking, and needle positioning help reduce repeated manual operations during garment production.
Key Features
- Single-Needle Lockstitch: Produces straight lockstitch seams for garment construction and professional industrial sewing.
- Integrated Direct Drive Motor: Built-in servo motor eliminates the conventional external clutch-motor arrangement.
- NTB Intelligent Technology: Electronic technology designed to assist with coordinated thread handling and machine operation.
- Octopus Nine-Brain AI System: JACK's intelligent control concept is intended to support sewing adjustments and operating consistency.
- Automatic Thread Trimming: Cuts the sewing threads at the end of supported sewing operations according to the selected machine settings.
- Automatic Presser Foot Lift: Provides electronically controlled presser-foot lifting to simplify material positioning and removal.
- Automatic Backtacking: Supports programmed reverse stitching at the beginning and end of seams.
- Electronic Needle Positioning: Allows controlled needle stopping positions according to the selected operating settings.
- Stepper Motor Technology: Electronic stepper-motor control is described for selected presser-foot and reverse-feed functions.
- Integrated LED Work Light: Provides illumination around the sewing area for improved visibility during operation.
- Adjustable Sewing Speed: Allows operators to select working speeds according to fabric characteristics and production requirements.
Intelligent Sewing Technology
The JACK JK-A4C-C incorporates an electronic control platform intended to coordinate selected machine functions during industrial sewing.
Its NTB and Octopus Nine-Brain technologies are promoted as part of JACK's intelligent sewing system.
These technologies are intended to assist with thread handling, machine responsiveness, and sewing adjustments.
Important: Actual stitch quality depends on the fabric, needle, thread, machine settings, and operating conditions.
Automatic Sewing Functions
- Automatic Thread Cutting: Reduces the need for manual thread trimming between sewing operations.
- Automatic Presser Foot Lifting: Helps operators reposition fabric between seams.
- Automatic Reverse Stitching: Supports programmed seam reinforcement.
- Needle Position Control: Provides controlled needle stopping positions.
- Electronic Speed Adjustment: Allows operators to adapt sewing speed to the required application.
Applications
- Garment manufacturing.
- Shirts, trousers, and uniforms.
- Dresses and casual apparel.
- Professional tailoring workshops.
- Light-to-medium woven fabrics.
- Selected synthetic fabric blends.
- Industrial straight-stitch production.
- Repetitive garment assembly operations.
Material Compatibility: The supplied description identifies light-to-medium fabrics as the primary application range. Actual suitability depends on fabric construction, material thickness, needle selection, thread, and machine adjustments.
Technical Specifications
| Brand | JACK |
| Model | JK-A4C-C |
| Machine Type | Industrial Single Needle Lockstitch |
| Number of Needles | 1 |
| Number of Threads | 2 |
| Stitch Type | 301 Lockstitch |
| Needle System | DB × 1 |
| Needle Size Range | #11–#18 — Listed Configuration |
| Maximum Sewing Speed | Up to 5,000 Stitches Per Minute |
| Maximum Stitch Length | 5 mm |
| Presser Foot Lift | 5–13 mm — Listed Configuration |
| Material Application | Light-to-Medium Fabrics |
| Motor | Integrated Direct Drive Servo Motor |
| Intelligent Technology | NTB / Octopus Nine-Brain AI |
| Automatic Thread Trimming | Listed for JK-A4C-C Configuration |
| Automatic Backtacking | Listed for JK-A4C-C Configuration |
| Automatic Presser Foot Lift | Listed for JK-A4C-C Configuration |
| Electronic Needle Positioning | Listed for JK-A4C-C Configuration |
| Stepper Motor Control | Listed in Supplied Product Description |
| LED Work Light | Included According to Supplied Description |
| Machine Dimensions | 695 × 295 × 550 mm — Verify Configuration |
| Net Weight | 36 kg — Listed Specification |
| Gross Weight | 42 kg — Listed Specification |
| Motor Voltage | Confirm With Supplied Machine |
| Motor Power | Confirm With Manufacturer |
| Lubrication | Confirm With Manufacturer |
| Included Equipment | Machine Head, Motor, Table & Stand |
| Assembly | Fully Assembled by JMJ Sewing Machines |
| Wheels | Not Included — Sold Separately |
Maximum sewing speed and other published specifications may vary according to machine configuration, materials, and operating conditions. Dimensions and weights should not be interpreted as the shipping dimensions or weight of the complete assembled table-and-stand package.
Advantages of Intelligent Lockstitch Technology
- Electronic Sewing Control: Supports adjustments for professional garment production.
- Integrated Motor Design: Eliminates the conventional external clutch-motor arrangement.
- Automatic Operating Functions: Helps reduce repetitive manual tasks between sewing operations.
- Production Flexibility: Allows operators to adjust sewing settings according to their materials.
- Professional Lockstitch Construction: Designed for repeated industrial garment sewing.
Fully Assembled & Ready for Operation
The JACK JK-A4C-C is supplied by JMJ Sewing Machines as a complete industrial sewing workstation.
The package includes the machine head, integrated direct-drive motor, industrial sewing table, and stand.
Our team prepares the machine through professional assembly, lubrication, calibration