The Jack JK-T781G Series is a high-speed, integrated electronic lockstitch buttonholing machine engineered for high-precision buttonhole creation across woven and knitted apparel. Powered by an energy-saving direct-drive servo motor, it offers exceptionally low noise, minimal vibration, and smooth high-speed operation up to 3,600 S.P.M.. Featuring automatic presser foot lifting, automatic thread trimming, intelligent bottom thread margin detection (F13 models), and a short thread remaining system (within 3mm), the Jack JK-T781G dramatically cuts post-production trimming labor while ensuring clean, high-grade buttonhole stitching on shirts, suits, workwear, and knitwear.
Key Features
. Short Thread Remaining System (GX Models)
. Automatic Presser Foot Lift & Thread Trimmer
. Bottom Thread Margin Detection (F13 Models)
. Dedicated Knitting Adaptation (GK Models)
. Digital Dot Panel Control
. Automatic Keyhole Counter
Technical Specifications
| Operation Type: Automatic / Integrated Electronic Direct Drive |
| Max Stitch Length: Buttonhole Size: $22 times 4text{ mm}$ (781G), $33 times 5text{ mm}$ (782G), $40 times 5text{ mm}$ (783G) |
| Max Tack Stitches: Programmable Digital Buttonhole Tack Patterns |
| Needle System: DPx5 (12# for Woven) / DPx5KN (11# for Knitted Fabrics) |
| Max Speed: Up to 3,600 S.P.M. (Stitches Per Minute) |
| Application: Light to Medium Woven & Knitted Apparel (Shirts, Suits, Workwear, Knitwear) |
| Bed Type: Flat Bed Buttonhole Sewing Head |
| Hook Type: High-Precision Rotary Hook |
| Lubrication: Automatic Centralized Oil Lubrication System |
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