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JACK® JK-C3-4-M03/333 2-Needle 4-Thread Automatic Industrial Overlock Sewing Machine – Complete with Table & Stand
FULLY ASSEMBLED | TABLE, MOTOR & STAND INCLUDED
JMJ Sewing Machines prepares the complete industrial setup for professional production.
2 Needles • 4 Threads • Automatic Overlock • Thread Trimming • Automatic Foot Lift • Digital Controls • Up to 5,800 SPM
JMJ Sewing Machines recommends the JACK® JK-C3-4-M03/333 for garment workshops seeking a 2-needle, 4-thread automatic industrial overlock with efficient seam finishing and production-friendly controls.
This configuration combines a stated maximum speed of 5,800 stitches per minute with automatic thread trimming, automatic presser-foot lifting, digital controls, a covered needle bar and material sensing.
For operations with frequent seam starts and stops, JMJ highlights automatic trimming as a way to reduce repetitive manual cutting. Actual productivity depends on the operator, fabric and production process.
Automatic Thread Trimming
PRODUCTION-FOCUSED AUTOMATIC THREAD TRIMMING
The automatic trimming mechanism reduces the need to cut thread manually at the end of each sewing cycle.
Reported production-efficiency improvements of 20–25% are estimates and are not guaranteed for every workflow.
Automatic Presser Foot Lift
Automatic presser-foot lifting helps operators reposition material between seams without repeating the same manual lifting action.
Digital Control Panel
The integrated digital panel gives operators access to supported sewing settings from the machine itself.
A reset control is provided for returning supported settings to their default configuration.
Integrated Shaft Design
The integrated shaft arrangement is designed for stable power transmission during industrial overlock production.
Fully Covered Needle Bar
DESIGNED FOR CLEANER SEWING
The enclosed needle-bar design helps reduce the risk of lubricant reaching fabric near the needle area.
Intelligent Material Recognition Sensor
The machine incorporates a specialized recognition and wear-resistant sensor designed to detect the material during sewing and automatically coordinate the relevant machine response.
This intelligent detection system helps automate the sewing process and supports efficient operation when handling different production conditions.
High-Speed Production — Up to 5,800 SPM
With a maximum sewing speed of up to 5,800 stitches per minute, the JACK® JK-C3-4-M03/333 is designed for professional production environments requiring fast overlock sewing and consistent seam formation.
Differential Feed
The 0.7–2 differential feed ratio provides additional control over material feeding, helping manage stretching or gathering according to the fabric and sewing application.
Key Features
- 2-Needle / 4-Thread Configuration: Professional industrial overlock configuration for strong and flexible garment seams.
- Heavy-Duty Function: Configured for demanding professional sewing applications.
- Automatic Thread Trimming: Reduces manual cutting and helps improve production efficiency.
- Automatic Presser Foot Lifter: Reduces repetitive operator effort during continuous production.
- Digital Control Panel: Provides convenient access to machine functions and adjustments.
- Reset Function: Dedicated reset button improves operating convenience.
- Integrated Shaft Design: Designed to reduce operating force and improve machine durability.
- Fully Covered Needle Bar: Helps prevent oil stains on sewing materials.
- Material Recognition Sensor: Intelligent sensing system detects material during sewing.
- Wear-Resistant Sensor: Designed for dependable operation in professional production environments.
- High-Speed Operation: Maximum sewing speed up to 5,800 stitches per minute.
- Differential Feed: Adjustable ratio from 0.7 to 2 for improved fabric control.
- 6 mm Presser Foot Lift: Provides clearance for applicable material thicknesses.
Ideal For
- Professional garment production.
- General apparel manufacturing.
- Overlock seam construction.
- Edge finishing.
- Knit garment production.
- Production sewing shops.
- High-volume overlock operations.
- Heavy-duty applications within the machine's specified sewing range.
Technical Specifications
| Brand | JACK® |
| Model | JK-C3-4-M03/333 |
| Machine Type | High-Speed Automatic Industrial Overlock Sewing Machine |
| Function | Heavy Duty |
| Number of Needles | 2 |
| Number of Threads | 4 |
| Needle System | DC×27 #11 |
| Needle Distance | 2 mm |
| Stitch Width | 4 mm |
| Stitch Length | Up to 4.6 mm |
| Differential Feed Ratio | 0.7–2 |
| Presser Foot Lift | 6 mm |
| Maximum Sewing Speed | 5,800 Stitches Per Minute |
| Automatic Thread Trimming | Yes |
| Automatic Presser Foot Lift | Yes |
| Control Panel | Digital |
| Needle Bar | Fully Covered / Oil-Stain Protection Design |
| Material Recognition Sensor | Yes |
| Machine Dimensions | 523 × 360 × 510 mm |
| Net / Gross Weight | 30 / 38 kg |
| Table & Stand | Included |
| Motor | Included |
What's Included
- JACK® JK-C3-4-M03/333 Industrial Overlock Machine Head.
- Motor.
- Digital Control System.
- Automatic Thread Trimming System.
- Automatic Presser Foot Lifting System.
- Industrial Sewing Table.
- Heavy-Duty Industrial Stand.
- Standard Machine Accessories.
JMJ SEWING MACHINES RECOMMENDS
For professional overlock production on compatible garment materials, our team recommends confirming fabric type, needle selection and machine setup before purchase. JMJ provides the complete machine with motor, table and stand.
JMJ Sewing Machines recommends the JACK® JK-C3-4-M03/333 for professional garment production requiring a 2-needle, 4-thread overlock, automatic thread trimming, automatic foot lift and digital controls. JMJ supplies this machine assembled with its motor, table and stand.