Basic Product Details
Product Name: Jack JK-58420B Direct Drive Double Needle Lockstitch Machine
Brand: Jack
Model Number: JK-58420B / JK-58420J / JK-58450B
Machine Type: Double Needle Lockstitch Sewing Machine / Twin Needle Sewing Machine
Stitch Type: Double Needle Lockstitch (Stitch Type 301)
Condition: New
Usage/Application: Shirts, Jeans, Trousers, Jackets, Workwear, Uniforms & Parallel Stitching Operations
Suitable Fabrics: Light, Medium, and Heavy Fabrics (Cotton, Denim, Canvas, Blends)
Product Specifications Table
| Feature / Parameter | Technical Specification |
| Max Sewing Speed | 3000 4000 SPM (Stitches Per Minute) |
| Max Stitch Length | 5 mm (Adjustable) |
| Standard Needle Gauge | 1/4 inch (6.4 mm) (Optional: 1/8", 3/16", 5/16", 3/8") |
| Presser Foot Lift Height | Manual: 7 mm / Knee Lifter: 13 mm |
| Needle System | DPx5 (#11 to #22) |
| Motor Type | Integrated Direct Drive Power-Saving Servo Motor |
| Control Interface | Smart Digital LCD Display Control Panel |
| Hook Type | Double-Capacity Rotary Hooks |
| Auto Functions | Auto Thread Trimmer, Auto Backtack, Auto Foot Lifter, Needle Positioner |
| Power Consumption | 220V / 50Hz (Energy saving up to 70%) |
| Lubrication System | Automatic Centralized Oil Supply Mechanism |
Key Features & Highlights
Direct Drive Servo System: Built-in energy-saving direct-drive motor provides high torque, instant response, minimal operational noise, and cuts electricity costs by up to 70%.
Synchronized Dual-Needle Feeding: Advanced needle-and-feed mechanism ensures smooth, parallel twin-row stitching without fabric puckering, slipping, or shifting.
Smart Operation Panel: Integrated digital screen allows quick, precise adjustment of sewing speed, backtacking cycles, and automatic thread trimming functions.
Large Capacity Rotary Hooks: Equipped with heavy-duty rotary hooks that hold more bobbin thread, reducing bobbin-change frequency and boosting line productivity.
Split Needle Bar (Optional Variant): Allows independent needle stop for smooth 90-degree corner stitching on pockets, collars, and waistbands.
Detailed Product Description
The Jack JK-58420B is a high-speed, direct-drive double needle lockstitch machine built for flawless parallel stitching on garments. Featuring an integrated direct-drive servo motor and a digital control panel, the 58420B guarantees accurate stitch lengths, clean thread trimming, and exceptional efficiency for high-volume apparel manufacturing.
Ideal for producing denim jeans, shirts, jackets, sportswear, and industrial workwear, this twin-needle machine delivers uniform tension and clean seam finishes across light to heavy materials. Its automatic lubrication system, needle positioning, and optional auto thread trimming functions significantly reduce operator labor and overall cycle times.
Price:
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