Shanggong GK5100D-02F-7 Four Needle Six Thread Flat Seam Machine | Auto Trimmer + Zero-Bulge Finish

📦 SKU: Shanggong GK5100D-02F-7 | 4 Needle 6 Thread Flat Seam Machine + Auto Thread Trimmer Smooth Finish. Zero Bulge. Ultimate Comfort. The Shanggong GK5100D-02F-7 is a specialized flat seam machine engineered for smooth, flat stitches that deliver a zero-bulge, skin-friendly finish. Primarily used for underwear and sportswear, it ensures high sewing flexibility and professional-grade seam quality for high-precision production. Features 4 needles and 6 threads with a built-in direct drive motor for instant response and whisper-quiet operation. The nano-coated oil-proof needle bar delivers superior durability. A compact 150mm cylinder allows sewing of small-diameter tubes up to 70mm — perfect for stockings and tight garments. Double differential feeding makes curved seams effortless. Equipped with automatic thread trimming, double knives, and a ceramic thread-passing mechanism for smoother, more consistent results. Speeds up to 3500 stitches per minute. The ideal choice for factories producing underwear, activewear, children's clothing, and swimwear. Key Features 🚀 ✨ Zero-Bulge Flat Seam Stitches: Smooth, skin-friendly finish — ideal for underwear and activewear that demands a soft touch 🪡 4 Needles & 6 Threads: Durable construction with high sewing flexibility and professional-grade finishing for precision production ⚡ Built-in Direct Drive Motor: Instant response, low noise, and minimal vibration — a comfortable, sustainable working environment 🧪 Nano-Coated Needle Bar: Oil-proof, stronger, and more durable — reduces maintenance and extends service life 📏 Compact 150mm Cylinder: Sew small-diameter tubes up to 70mm with ease — stockings, tight garments, and sleeves 🔄 Double Differential Feed: Effortlessly sew curved seams and complex bindings with superior accuracy ✂️ Auto Thread Trimmer + Double Knives: Safe, efficient cutting that boosts productivity and reduces manual effort 🏺 Ceramic Thread-Passing Mechanism: Smooth thread flow ensures softer, more consistent stitches on every piece 📊 Technical Specifications Model Max Speed Needles Threads Stitch Length GK5100D-02F-7 3500 SPM 4 6 1.6-2.5 mm Model Cylinder Presser Foot Lift Differential Ratio Design GK5100D-02F-7 150 mm 0.1-8 mm 1:0.7-1:0.5 Direct Drive ✨ Perfect For 👙 Underwear & Lingerie Factories 🏃 Activewear & Leggings Manufacturers 👕 T-Shirt & Knitwear Production Lines 🧘♀️ Yoga Wear & Swimwear Factories 👶 Children's Clothing & Babywear 🧦 Sock & Stocking Manufacturers