Catalog · Heavy-Duty
Heavy-Duty
Walking foot, post-bed, and unison-feed machines built for upholstery and leather.
7 models · genuine Jack parts
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Each family covers a different production task. Pick the one that matches the work.
0112 modelsLockstitch
Single-needle straight stitch for garment, denim, and leather work.
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0210 modelsOverlock
3-, 4-, and 5-thread edge finishing for knit and woven fabrics.
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038 modelsCoverstitch
Flat- and cylinder-bed coverstitch with auto-trim and pneumatic options.
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041 modelCutting
Straight blade and round knife fabric cutting machines for the cutting room.
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053 modelsBar Tacking
Computer-controlled bar tackers for high-stress reinforcement points.
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068 modelsButton
Button sewing and buttonhole machines, mechanical and electronic.
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073 modelsZig-Zag
Straight + zig-zag lockstitch with automatic pattern selection.
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0814 modelsSpecials
Programmable pattern sewing, CNC template machines, automated welt pockets.
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Learn more about heavy-duty machines
What is a heavy-duty sewing machine?
Heavy-duty machines are built for thick, layered, and difficult material — leather, upholstery, webbing, multi-ply denim. They use a walking foot, compound feed, or post bed so the top and bottom layers move together instead of slipping, and a direct-drive servo that holds torque at low speed. This is the family for anything a standard garment machine can't push through.
How to choose a heavy-duty machine
The choice is driven by the feed system and the shape of the work. A walking-foot machine like the JACK Z7 suits flat and layered leather and upholstery. A compound (unison) feed like the 2060 grips the hardest layered seams — webbing, harnesses, thick upholstery — because the needle, foot, and feed dog move as one. A post-bed machine like the S7 reaches around three-dimensional pieces: boots, structured bags, gussets. Match the feed to your material and the bed to your shape, then confirm the rated thread size and presser-foot lift clear your heaviest joint.