{"product_id":"jack®-jk-58750b-005-1-4-3-4-double-needle-large-bobbin-split-bar-lockstitch","title":"JACK® JK-58720B-005 Double Needle Large Bobbin Split-Bar Industrial Lockstitch Sewing Machine","description":"\u003c!-- JMJ HTML Product Description --\u003e\n\u003ch2 style=\"margin-bottom: 10px;\"\u003eJACK® JK-58720B-005-Double Needle Large Bobbin Needle-Feed Lockstitch Sewing Machine\u003c\/h2\u003e\n\u003cstyle\u003e\n@keyframes pulseJMJ {\n  0% {transform:scale(1); box-shadow:0 0 0 rgba(249,115,22,0);}\n  50% {transform:scale(1.02); box-shadow:0 0 12px rgba(249,115,22,.35);}\n  100% {transform:scale(1); box-shadow:0 0 0 rgba(249,115,22,0);}\n}\n\u003c\/style\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;\"\u003eDouble Needle • Needle Feed • Large Bobbin • 750W Direct Drive\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003eThe \u003cstrong\u003eJACK® JK-58720B-005\u003c\/strong\u003e is a professional industrial double-needle needle-feed lockstitch machine designed for accurate, consistent parallel seaming on medium-weight fabrics and layered materials. Its synchronized needle-feed system advances the material with each stitch, helping prevent fabric slippage while maintaining precise and uniform stitch spacing.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px;\"\u003ePowered by a \u003cstrong\u003e750W Direct Drive servo motor\u003c\/strong\u003e with a self-cooling handwheel, the JK-58720B delivers smooth, quiet, and energy-efficient operation at speeds up to \u003cstrong\u003e3,000 stitches per minute\u003c\/strong\u003e. Its large-capacity bobbin system extends sewing time between bobbin changes, while the closed lubrication system helps keep oil contained and away from finished fabrics.\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\u003e\n\u003cstrong\u003eDouble Needle System:\u003c\/strong\u003e Produces clean, consistent parallel stitch rows for professional garment construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeedle Feed:\u003c\/strong\u003e Advances the material in synchronization with each stitch to help prevent shifting and layer slippage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge-Capacity Bobbin:\u003c\/strong\u003e Provides longer sewing cycles with fewer bobbin changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e750W Direct Drive Servo Motor:\u003c\/strong\u003e Powerful, quiet, energy-efficient operation without a conventional drive belt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Cooling Handwheel:\u003c\/strong\u003e Helps maintain efficient motor performance during continuous production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed Lubrication System:\u003c\/strong\u003e Keeps lubrication contained to help reduce oil contamination on finished fabrics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.4 mm Needle Gauge:\u003c\/strong\u003e Provides consistent spacing for standard double-needle parallel seams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7 mm Maximum Stitch Length:\u003c\/strong\u003e Provides flexibility for different sewing applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 5 mm Sewing Thickness:\u003c\/strong\u003e Handles layered and structured medium-weight materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3,000 SPM Maximum Speed:\u003c\/strong\u003e Designed for efficient industrial production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eIdeal For\u003c\/h3\u003e\n\u003cul style=\"margin-bottom: 16px; padding-left: 18px;\"\u003e\n\u003cli\u003eJeans and denim garments.\u003c\/li\u003e\n\u003cli\u003eWorkwear.\u003c\/li\u003e\n\u003cli\u003eSportswear.\u003c\/li\u003e\n\u003cli\u003eStructured garments.\u003c\/li\u003e\n\u003cli\u003eMedium-weight woven fabrics.\u003c\/li\u003e\n\u003cli\u003eLayered materials.\u003c\/li\u003e\n\u003cli\u003eParallel double-needle seams.\u003c\/li\u003e\n\u003cli\u003eDecorative topstitching.\u003c\/li\u003e\n\u003cli\u003eProduction applications requiring consistent stitch spacing.\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\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eJACK®\u003c\/td\u003e\n\u003c\/tr\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;\"\u003eJK-58720B-005\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;\"\u003eDouble Needle Needle-Feed Lockstitch with Large Bobbin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eNumber of Needles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e2 (Double Needle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eNeedle System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eDP×5, Sizes #11–#16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eNeedle Gauge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e6.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eFeed System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eNeedle Feed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Sewing Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e3,000 SPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Stitch Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003ePresser Foot Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e7–13 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Sewing Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eBobbin System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eLarge Capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e750W Direct Drive Servo Motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eDrive Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eDirect Drive\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;\"\u003eClosed Lubrication System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eWork Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e264 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003e\u003cstrong\u003eMachine Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border-bottom: 1px solid #ddd;\"\u003eApprox. 43–53.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul style=\"margin-bottom: 16px; padding-left: 18px;\"\u003e\n\u003cli\u003eJACK® JK-58720B-\u003cstrong\u003e-005\u003c\/strong\u003e Double Needle Machine Head.\u003c\/li\u003e\n\u003cli\u003e750W Direct Drive Servo Motor.\u003c\/li\u003e\n\u003cli\u003eIndustrial Sewing Table.\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Industrial Stand.\u003c\/li\u003e\n\u003cli\u003eStandard Accessories Kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"margin-bottom: 0;\"\u003eThe \u003cstrong\u003eJACK® JK-58720B-005\u003c\/strong\u003e combines precise needle feeding, large-bobbin capacity, and powerful Direct Drive technology to provide dependable double-needle sewing performance. It is an excellent solution for professional garment manufacturers producing jeans, workwear, sportswear, and other products requiring clean, consistent parallel seams.\u003c\/p\u003e","brand":"JACK®","offers":[{"title":"Standard 1\/4″ (6.4 mm)","offer_id":53706575020326,"sku":null,"price":2820.0,"currency_code":"USD","in_stock":true},{"title":"3\/4″ (19 mm)","offer_id":53706575053094,"sku":null,"price":2820.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/5825\/1302\/files\/ChatGPTImage31ago2026_01_14_10p.m..png?v=1788196521","url":"https:\/\/jmjsewingmachines.com\/products\/jack%c2%ae-jk-58750b-005-1-4-3-4-double-needle-large-bobbin-split-bar-lockstitch","provider":"JMJ SEWING MACHINES","version":"1.0","type":"link"}