{"product_id":"jack-z7-29100","title":"JACK Z7 Double Needle AI Walking Foot Lockstitch Industrial Sewing Machine — Dual Sensor, 3\/8\" Gauge, Triple Feed, 850W Direct Drive \u0026 Touchscreen for Leather \u0026 Upholstery — Complete Setup, Table \u0026 Stand Included","description":"\u003cp\u003eThe \u003cstrong\u003eJACK Z7-29100\u003c\/strong\u003e is the \u003cstrong\u003edouble needle\u003c\/strong\u003e version of Jack's flagship Z7 AI walking foot platform — a heavy-duty compound-feed lockstitch machine that lays down \u003cstrong\u003etwo perfectly parallel rows of stitching in a single pass\u003c\/strong\u003e at a \u003cstrong\u003e3\/8\" (9.5 mm) needle gauge\u003c\/strong\u003e. Built for leather, upholstery, automotive interiors, and marine canvas, it pairs true triple-transport feeding with the same self-adjusting intelligence that sets the Z7 apart from every conventional double-needle machine in its class.\u003c\/p\u003e\n\u003cp\u003eIts signature feature is the \u003cstrong\u003edual AI thickness sensor\u003c\/strong\u003e: the machine reads material thickness and resistance in real time and \u003cstrong\u003eautomatically adjusts motor torque, needle penetration force, and thread tension mid-seam\u003c\/strong\u003e — so when a car-seat seam jumps from two layers to six at a junction, the operator doesn't stop, adjust, or restart. The \u003cstrong\u003edual alternating walking feet\u003c\/strong\u003e and \u003cstrong\u003esecondary auto-activating thread tension\u003c\/strong\u003e engage on detected overlap, keeping both needle rows clean and even across the whole assembly.\u003c\/p\u003e\n\u003cp\u003ePower comes from an \u003cstrong\u003e850W high-torque direct drive servo motor\u003c\/strong\u003e driving an \u003cstrong\u003eXXL 32 mm hook\u003c\/strong\u003e (73% more bobbin capacity than a standard 2× hook) for fewer bobbin changes on long production runs. Controlled from a \u003cstrong\u003etouchscreen panel with voice guidance\u003c\/strong\u003e and an electronic digital handwheel, the Z7-29100 runs at up to \u003cstrong\u003e2,600 stitches per minute\u003c\/strong\u003e with a long \u003cstrong\u003e12 mm maximum stitch length\u003c\/strong\u003e. Ships fully assembled with industrial table and stand.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eJACK Z7-29100 Double Needle AI Walking Foot Lockstitch Machine Head (Ships Fully Assembled)\u003c\/li\u003e\n  \u003cli\u003e850W High-Torque Direct Drive Servo Motor\u003c\/li\u003e\n  \u003cli\u003eTouchscreen Control Panel with Voice Guidance\u003c\/li\u003e\n  \u003cli\u003eIndustrial Sewing Table \u0026amp; Stand\u003c\/li\u003e\n  \u003cli\u003e3\/8\" Double Needle Gauge Set\u003c\/li\u003e\n  \u003cli\u003eDP×35R (#21) Needles and Standard Bobbins\u003c\/li\u003e\n  \u003cli\u003eStandard Accessories Kit (needles, bobbins, tools, oil)\u003c\/li\u003e\n  \u003cli\u003eOperator's Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble needle lockstitch (3\/8\" \/ 9.5 mm gauge)\u003c\/strong\u003e — two perfectly parallel rows in a single pass for topstitching, reinforcement, and decorative seams on leather and upholstery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual AI thickness sensor\u003c\/strong\u003e — reads material thickness in real time and auto-adjusts motor torque, needle penetration force, and thread tension mid-seam, no operator input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual alternating walking feet (variable stroke)\u003c\/strong\u003e — auto or manual activation via two knobs; superior feeding on uneven multi-layer leather, vinyl, and upholstery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTriple transport \/ unison feed\u003c\/strong\u003e — feed dog + needle + walking feet move together to prevent layer shifting and uneven stitch length on heavy materials\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary auto-activating thread tension\u003c\/strong\u003e — engages on detected overlap to keep both needle rows consistent across the entire seam\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e850W high-torque direct drive servo motor\u003c\/strong\u003e — strong low-speed pulling force through dense multi-layer assemblies without skipped stitches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eXXL 32 mm heavy-duty hook\u003c\/strong\u003e — 73% more bobbin capacity than a standard 2× hook; handles thick thread without jams, fewer bobbin changes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTouchscreen panel with voice guidance\u003c\/strong\u003e — icons and voice prompts for trimmer, backtack, foot lifter, and programmable functions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic digital handwheel\u003c\/strong\u003e — micrometric adjustment with single-click half-stitch for precise needle placement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual needle pitch \/ one-button stitch length switch\u003c\/strong\u003e — switch between two stitch lengths with a single press for corners and detail work\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12 mm maximum stitch length\u003c\/strong\u003e — long, strong stitches for heavy decorative and structural seams\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2,600 stitches per minute\u003c\/strong\u003e — speed matched to double-needle heavy-material precision\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20 mm presser foot lift\u003c\/strong\u003e — clears thick, layered assemblies (pneumatic double-alternating lifter, requires external air compressor, min. 70 PSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic thread trimming, back-tacking \u0026amp; smart bobbin thread warning\u003c\/strong\u003e — faster cycle time, clean seam starts\/ends, never sew empty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic lubrication\u003c\/strong\u003e — smooth running, minimal maintenance downtime\u003c\/li\u003e\n  \u003cli\u003eShips \u003cstrong\u003efully assembled with industrial table and stand\u003c\/strong\u003e, ready to sew\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomotive interiors — car seats, door panels, headrests, and trim with parallel double-topstitching\u003c\/li\u003e\n  \u003cli\u003eFurniture \u0026amp; upholstery — sofas, cushions, recliners, and decorative twin-needle seams\u003c\/li\u003e\n  \u003cli\u003eLeather goods — bags, belts, straps, and reinforced multi-layer panels\u003c\/li\u003e\n  \u003cli\u003eMarine \u0026amp; outdoor fabrication — boat covers, bimini tops, awnings, and outdoor cushions\u003c\/li\u003e\n  \u003cli\u003eFootwear and heavy accessories requiring twin parallel seams\u003c\/li\u003e\n  \u003cli\u003eAny heavy leather, vinyl, or coated-fabric work needing two consistent rows across changing thickness\u003c\/li\u003e\n  \u003cli\u003eShops that want the Z7's self-adaptive AI in a double-needle configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZ7-29100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMachine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble Needle AI Walking Foot Lockstitch, Direct Drive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual Sensor · Dual Needle Pitch · Dual Alternating Variable Walking Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStitch Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLockstitch (ISO 301), 2-Needle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Needles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Threads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 (2 needle + 2 bobbin)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeedle Gauge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/8\" (9.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeedle System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDP×35R (#21)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Sewing Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,600 sti\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Stitch Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Presser Foot Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mm (pneumatic, double-alternating)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeed System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTriple Transport \/ Unison Feed (feed dog + needle + walking feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHook Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eXXL 32 mm Heavy-Duty Hook (+73% bobbin capacity)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAI System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual real-time thickness sensor — auto-adjusts torque, penetration \u0026amp; tension\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Tension\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimary + Secondary auto-activating\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTouchscreen with Voice Guidance + Electronic Digital Handwheel (half-stitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutomatic Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThread Trimmer · Back-Tack · Foot Lifter · Bobbin Warning · Stitch Length Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e850W High-Torque Direct Drive Servo Motor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Drive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLubrication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal air compressor for pneumatic foot lifter (min. 70 PSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMachine Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e930 × 385 × 780 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (Net \/ Gross)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66 \/ 81 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial Weight Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMedium to Heavy (leather, upholstery, vinyl, canvas)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTable \u0026amp; Stand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded — Ships Fully Assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"JACK","offers":[{"title":"Default","offer_id":52354799927598,"sku":"Z7-29100","price":5795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/1514\/8334\/files\/JACKZ710_9c4125cb-784e-40da-96bc-63dd242fea59.jpg?v=1785005531","url":"https:\/\/suprasewing.com\/products\/jack-z7-29100","provider":"Supra Sewing Online, Llc","version":"1.0","type":"link"}