The Jack N9-D is the next-generation AI-powered electronic lockstitch buttonhole machine — the direct successor to the industry-standard JK-T1790 series. Built on Jack's newest intelligent platform, the N9-D features AI-driven material adaptation that automatically detects fabric thickness and density, then adjusts tension, speed, and stitch parameters in real time to deliver perfect buttonholes on every garment, every time — eliminating manual setup adjustments between fabric types. Powered by a direct drive servo motor with built-in stepper motors for fabric feed, needle bar, and knife operation, the N9-D produces clean, precise buttonholes at speeds up to 4,200 stitches per minute. The semi-dry head design eliminates oil staining, while the integrated touchscreen control panel provides 31 pre-installed buttonhole patterns expandable to 500 user-defined patterns via USB import. Ideal for shirts and blouses, dress shirts, polo shirts, trousers, lightweight jackets, uniforms, and any garment production requiring fast, repeatable, precision buttonholes across a variety of fabric types — without the constant parameter tweaking that older machines demand. What's Included Jack N9-D AI Electronic Buttonhole Machine (Ships Assembled) Built-in Direct Drive Servo Motor AI Material Adaptation System Automatic Thread Trimmer Automatic Presser Foot Lifter Integrated Side Cutter Knife Touchscreen Control Panel Industrial Table and Stand Standard Needle Set and Bobbins USB for Pattern Import Operator's Manual Key Features Next-generation AI material adaptation — auto-detects fabric thickness and adjusts tension/speed/parameters in real time Direct successor to the JK-T1790 platform — proven buttonhole performance enhanced with intelligent automation 25mm × 4mm buttonhole capacity for standard apparel applications Direct drive servo motor — quiet, energy-efficient, low vibration, belt-free operation 4,200 stitches per minute maximum sewing speed for production-line throughput Semi-dry head design — no oil, no fabric staining, clean operation 31 pre-installed buttonhole patterns + memory for up to 500 user-designed patterns USB port for pattern import, software updates, and design transfer Side cutter with 1/4" – 3/4" standard cutting range, expandable to 1-1/4" with proper gauge set Electronic tension with 2 presets — set different tensions for each edge of the buttonhole Multi-cut and continuous sewing capability for varied applications Integrated cooling fan extends machine life Automatic thread trimmer + automatic presser foot lifter for hands-free cycle operation Ideal For Shirts, blouses, and dress shirts Polo shirts and casual apparel Trousers, pants, and chinos Lightweight jackets and outerwear Uniforms, workwear, and school uniforms Children's clothing High-volume garment factory production Applications requiring fabric-type variety without manual machine retuning Specifications Brand Jack Model N9-D Machine Type AI-Powered Electronic Lockstitch Buttonhole Machine Platform New Generation (Replaces JK-T1790 Series) AI System Automatic Material Adaptation (Real-Time Parameter Adjustment) Stitch Type 301 Lockstitch Buttonhole Buttonhole Size 25 × 4 mm (1" × 5/32") Side Cutter Range 1/4" – 3/4" standard (up to 1-1/4" with proper gauge set) Parallel Interspace 0.2 – 2.5 mm Max Sewing Speed 4,200 sti/min Number of Needles 1 Number of Threads 2 Needle System DP×5 #9–#16 Presser Foot Clearance 17 mm Thread Trimmer Automatic Presser Foot Lifter Automatic Pattern Memory 31 Pre-installed + Up to 500 User Patterns Pattern Input Touchscreen + USB Import Control Panel LCD Touchscreen Electronic Tension Yes (2 Presets per Buttonhole Edge) Lubrication Semi-Dry Head (No Oil) Cooling Integrated Cooling Fan Motor Built-in Direct Drive Servo Motor Voltage 110V Material Weight Light to Medium Table Size 20" x 47" Shipping Pallet Size 48" x 40" x 42" Includes Complete Setup with Table and Stand Assembly Ships Assembled
