{"product_id":"jack®-f4-single-needle-direct-drive-lockstitch","title":"JACK® F4 - Single Needle Direct Drive Lockstitch","description":"\u003c!-- JMJ HTML ficha técnica --\u003e\n\u003cstyle\u003e\n@keyframes pulseJMJ {\n  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(249,115,22,0.55); }\n  70% { transform: scale(1.02); box-shadow: 0 0 0 12px rgba(249,115,22,0); }\n  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(249,115,22,0); }\n}\n\u003c\/style\u003e\n\u003ch2 style=\"margin-bottom: 10px;\"\u003eJACK® F4 - Single Needle Direct Drive Lockstitch Industrial Sewing Machine\u003c\/h2\u003e\n\u003cdiv style=\"margin: 16px 0; padding: 14px 18px; border: 2px solid #f97316; border-radius: 10px; background: #fff7ed; text-align: center; animation: pulseJMJ 2s infinite;\"\u003e\n\u003cp style=\"margin: 0; font-weight: 800; font-size: 17px; color: #f97316;\"\u003e✔ COMPLETE ASSEMBLED WITH TABLE AND STAND INCLUDED\u003c\/p\u003e\n\u003cp style=\"margin: 6px 0 0; font-size: 14px; color: #333;\"\u003eReady to sew. No setup needed. Professional installation included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 12px; font-weight: 500;\"\u003eDirect Drive • High Speed • Energy Saving\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eThe \u003cstrong\u003eJACK® F4\u003c\/strong\u003e is a high-speed single needle drop feed lockstitch industrial sewing machine designed for reliable performance on light to heavy-weight materials. Equipped with a built-in \u003cstrong\u003eDirect Drive motor\u003c\/strong\u003e, it eliminates belts, reduces noise, saves energy, and provides smoother operation for professional sewing environments.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eThis machine is ideal for garment production, tailoring shops, and industrial sewing applications. With adjustable speed, needle positioning, integrated LED light, built-in bobbin winder, and voltage protection, the JACK F4 offers a practical and efficient solution for everyday production work.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"margin-bottom: 16px; padding-left: 18px;\"\u003e\n\u003cli\u003eSingle needle drop feed lockstitch machine.\u003c\/li\u003e\n\u003cli\u003eBuilt-in Direct Drive motor for quiet and efficient operation.\u003c\/li\u003e\n\u003cli\u003eEnergy-saving standby mode.\u003c\/li\u003e\n\u003cli\u003eDigital speed adjustment with real-time display.\u003c\/li\u003e\n\u003cli\u003eNeedle positioning: stop needle up or down.\u003c\/li\u003e\n\u003cli\u003eIntegrated manual thread cutter.\u003c\/li\u003e\n\u003cli\u003eStitch-to-stitch key for precision sewing.\u003c\/li\u003e\n\u003cli\u003eBuilt-in LED light adjustable in 3 levels.\u003c\/li\u003e\n\u003cli\u003eIntegrated bobbin winder.\u003c\/li\u003e\n\u003cli\u003eVoltage protection system.\u003c\/li\u003e\n\u003cli\u003eSuitable for light to heavy-weight materials.\u003c\/li\u003e\n\u003cli\u003eAutomatic lubrication with pump.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"margin-bottom: 16px; padding-left: 18px;\"\u003e\n\u003cli\u003eCotton, knits, polyester, nylon, sheer fabrics, and denim.\u003c\/li\u003e\n\u003cli\u003eBlouses, shirts, uniforms, and workwear.\u003c\/li\u003e\n\u003cli\u003eMen’s, women’s, and children’s apparel.\u003c\/li\u003e\n\u003cli\u003eOveralls, lingerie, and general garment production.\u003c\/li\u003e\n\u003cli\u003eJeans and heavier fabrics with proper part configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 16px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eJACK® F4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMachine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eSingle Needle Drop Feed Lockstitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eBuilt-In Direct Drive Motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMotor Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e550 Watt \/ 3\/4 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMax Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e5,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e110V or 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eLighting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eBuilt-In LED Light, 3 Levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eLubrication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eAutomatic Lubrication with Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eBobbin Winder\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eBuilt-In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eIncluded Accessories\u003c\/h3\u003e\n\u003cul style=\"margin-bottom: 16px; padding-left: 18px;\"\u003e\n\u003cli\u003eMachine head\u003c\/li\u003e\n\u003cli\u003eHeavy-duty table\u003c\/li\u003e\n\u003cli\u003eIndustrial stand\u003c\/li\u003e\n\u003cli\u003eBuilt-in Direct Drive motor\u003c\/li\u003e\n\u003cli\u003eTool kit\u003c\/li\u003e\n\u003cli\u003eDrawer\u003c\/li\u003e\n\u003cli\u003eThread stand\u003c\/li\u003e\n\u003cli\u003eInstruction \/ parts manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"margin-bottom: 0;\"\u003eThe \u003cstrong\u003eJACK® F4\u003c\/strong\u003e is a practical, quiet, and energy-efficient lockstitch machine built for daily production. With Direct Drive technology, adjustable controls, and a complete ready-to-use setup, it is an excellent choice for professional sewing shops and garment manufacturers.\u003c\/p\u003e","brand":"JMJ SEWING MACHINES","offers":[{"title":"Default Title","offer_id":53426188910886,"sku":null,"price":900.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/5825\/1302\/files\/ChatGPTImage1jul2026_15_11_33.png?v=1782933275","url":"https:\/\/jmjsewingmachines.com\/products\/jack%c2%ae-f4-single-needle-direct-drive-lockstitch","provider":"JMJ SEWING MACHINES","version":"1.0","type":"link"}