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JACK® JK-K7-UT-01GBX364 AI Smart 3-Needle Cylinder Bed Industrial Coverstitch Sewing Machine
The JACK® JK-K7-UT-01GBX364 is a computerized industrial coverstitch machine developed for professional garment production, particularly operations involving knitted and stretch materials.
Its cylinder-bed construction makes it easier to handle circular garment sections, allowing operators to work on sleeves, cuffs, pant legs, and other tubular components without the restrictions of a conventional flatbed sewing surface.
The machine combines a three-needle coverstitch system, direct-drive motor technology, electronic operating controls, automatic thread trimming, and automatic presser foot lifting.
For garment manufacturers producing activewear, casual apparel, underwear, and knitted clothing, the JACK K7-UT provides a specialized sewing platform for consistent coverstitch construction and efficient handling of repetitive finishing operations.
At JMJ Sewing Machines, we supply this industrial model as a complete sewing station. Our technical team inspects, adjusts, and sewing-tests the machine before delivery.
FULLY ASSEMBLED | TABLE, MOTOR & STAND INCLUDED
Professionally assembled, adjusted, and sewing-tested by JMJ Sewing Machines before delivery.
Key Features
- Three-Needle Coverstitch System: Designed for industrial coverstitch operations requiring parallel needle stitching and looper thread formation.
- Cylinder-Bed Construction: Provides convenient access to tubular garment sections and curved sewing areas.
- Computerized Sewing Operation: Electronic controls allow operators to manage supported machine functions and operating adjustments.
- Integrated Direct-Drive Servo Motor: Provides electronically controlled sewing operation without a conventional external clutch-motor arrangement.
- Automatic Thread Trimming: The integrated cutting system reduces the need to manually trim threads after supported sewing operations.
- Automatic Presser Foot Lift: Assists with fabric positioning and removal between sewing cycles.
- Stepper Motor Technology: Electronic motor control is used for supported automatic functions, including thread trimming and presser foot lifting.
- Intelligent Sewing Controls: The K7 series incorporates electronic technology intended to support controlled sewing operation and adjustments.
- High-Speed Industrial Design: Developed for production environments requiring repeated coverstitch operations.
- LED Work Lighting: Provides illumination around the sewing area for improved visibility.
- Stretch-Fabric Applications: Coverstitch construction is particularly useful for garments requiring flexible stitching.
- Automatic Function Integration: Combines electronic sewing controls with automatic thread handling and presser foot operation.
- UTL Pneumatic Suction: The specified UTL configuration uses pneumatic suction as part of its thread-handling system.
- Complete Industrial Sewing Station: Supplied with the machine head, motor, industrial table, and metal stand.
Applications
The JACK JK-K7-UT-01GBX364 is intended for garment manufacturers and sewing businesses requiring professional coverstitch finishing on knitted and stretch materials.
- Sportswear and athletic apparel
- T-shirt hemming and finishing
- Sleeve and cuff construction
- Leg openings and tubular garments
- Underwear and intimate apparel
- Stretch-fabric garment production
- Casual knitted clothing
- Elastic knitwear applications
- Professional coverstitch finishing
- Commercial garment manufacturing
Designed for Tubular Garment Production
The cylinder-bed design helps operators guide circular garment sections around the sewing arm while producing professional coverstitch seams.
Its automatic functions can reduce repetitive handling during garment finishing, making the machine suitable for workshops focused on consistent production and efficient operator workflow.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | JACK® |
| Model | JK-K7-UT-01GBX364 |
| Machine Series | K7-UT |
| Machine Category | Computerized Industrial Coverstitch |
| Machine Bed | Cylinder Bed |
| Stitch Type | Coverstitch / Interlock |
| Number of Needles | 3 |
| Needle Gauge | 6.4 mm (1/4 in.) |
| Needle System | UYx128GAS |
| Needle Size Range | #9–#16, depending on material |
| Motor System | Integrated Direct-Drive Servo Motor |
| Operating Voltage | 110V — JMJ Supplied Configuration |
| Control Type | Computerized Electronic Control |
| Automatic Thread Trimming | Yes |
| Automatic Presser Foot Lift | Yes |
| Stepper Motor Control | Thread Trimming and Presser Foot Functions |
| LED Work Light | Yes |
| Pneumatic Suction | UTL Configuration |
| Recommended Materials | Knit and Stretch Fabrics |
| Primary Application | Industrial Coverstitch Garment Finishing |
| Machine Setup | Complete with Table & Stand |
Needle selection, sewing performance, and operating settings depend on the supplied machine configuration, material characteristics, and production requirements. Maximum sewing speed, motor power, and additional subclass specifications should be confirmed against the machine's technical documentation.
Included with the Machine
- JACK® JK-K7-UT-01GBX364 Industrial Sewing Machine Head
- Integrated Direct-Drive Servo Motor
- Industrial Sewing Machine Table
- Heavy-Duty Metal Stand
- Installed Electronic Control System
- Automatic Thread Trimming System
- Standard Manufacturer-Supplied Accessories
JMJ Complete Setup
Our technical team assembles and adjusts the complete sewing station before delivery. The machine is inspected and sewing-tested to help ensure that the supplied equipment is properly prepared for its intended applications.
JMJ Quality Inspection
JMJ Sewing Machines prepares industrial sewing equipment through a technical inspection process focused on machine operation, component verification, and sewing performance.
Depending on the supplied configuration, our inspection includes:
- Visual examination of the machine
- Inspection of relevant mechanical components
- Verification of motor and electronic controls
- Presser foot operation checks
- Needle and thread path inspection
- Verification of automatic thread trimming
- Coverstitch formation evaluation
- Machine adjustments and calibration
- Sewing tests before delivery
Our technicians prepare each complete machine according to its intended industrial sewing applications.
JMJ Sewing Machines Recommends
We recommend the JACK JK-K7-UT-01GBX364 for garment manufacturers working with knitted fabrics, stretch materials, and tubular garment components.
Its cylinder-bed construction is particularly useful for sewing operations involving sleeves, cuffs, and other circular garment sections.
Before purchasing, customers can consult our technical team about fabric compatibility, needle selection, thread requirements, and production needs.
Warranty & Technical Support
Warranty requests and technical assistance are handled directly by JMJ Sewing Machines.
Warranty coverage is provided according to the applicable terms and conditions supplied with the machine.
For covered manufacturing defects, JMJ provides replacement parts and labor in accordance with the applicable warranty.
Electrical and electronic components are subject to applicable exclusions to the extent permitted by law.
Manufacturer warranties and applicable legal rights remain in effect.
Preliminary technical assistance may be available through video consultation. Certain repairs require an in-person technical inspection.
Spare Parts & Accessories
JMJ Sewing Machines can assist customers with identifying compatible replacement parts and accessories for their industrial coverstitch equipment.
- Industrial sewing machine needles
- Loopers and looper-related components
- Presser feet
- Needle plates
- Feed dogs
- Thread guides
- Thread tension components
- Mechanical replacement parts
- Electrical and electronic components
- Additional industrial sewing accessories
Compatibility and availability must be confirmed before ordering.
Important Before Ordering
Complete Machine: This industrial sewing machine is supplied with its table, motor, and metal stand.
Electrical Configuration: JMJ supplied operating voltage: 110V.
Pneumatic Suction: The UTL suction system requires a compatible compressed-air supply. An external air compressor is not included and must be purchased separately if required for the installed pneumatic system.
Material Compatibility: Needle size, thread selection, fabric thickness, and machine adjustments must match the intended sewing application.
Wheels: WHEELS ARE NOT INCLUDED — SOLD SEPARATELY.
Wheels shown in showroom photographs, when applicable, are used to move equipment and are not included with the machine.
In-Store Purchases: Customers purchasing machines at our physical store receive a brief in-person explanation of basic machine controls at delivery.
Shipped Orders: Shipped orders do not include in-person operator training.
Returns & Store Policies
Eligible voluntary returns may be requested within 14 calendar days, subject to the applicable JMJ Sewing Machines return policy.
Approved voluntary returns are subject to a 20% restocking fee.
Claims involving covered defects and applicable legal rights are handled separately under the relevant warranty and laws.
Contact JMJ Sewing Machines
JMJ SEWING MACHINES
Industrial Sewing Machines, Parts, Accessories, Repairs & Technical Support
Location: Orlando, Florida
English: 407-451-7450
Español: 321-374-2407
Website: jmjsewingmachines.com
Our technical team can help you select industrial sewing equipment that matches your sewing and production requirements.