Jack Sewing Machines · Overlock

Edges that never
slow down.

Five overlock machines, led by the AI-driven C7 Urus, built to carry thick seams, elastic joints and delicate knits through the same head without missing a stitch.

Urus · Flagship Overlock

Full speed,
across every seam.

C7's AI Full Speed Feeding System reads fabric joint changes in real time, coordinating the Presser Foot Transformer and Smart Rhino Feeding to carry thick, thin, elastic and hard joints through the head at full speed, with no slowdown and no re-adjustment.

  • Presser Foot Transformer: 32,000 detections a second, 0.00006 microsecond pressure response
  • Smart Rhino Feeding: 9.2Nm torque, precise force at every degree of 360°
  • Comprehensive per-unit efficiency improved by 10%+
  • Dedicated denim variants for heavy, multi-layer seams
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Jack C7 Urus AI overlock machine
7000 spmMax speed
9.2NmFeed torque
3–6Thread count
+10%Efficiency
C7-5-03
Standard 5-thread overlock
C7-5-M04/435
Denim-specific, 5 thread
C7-6-53/233
Six-thread covered seam
C7-6-M04/435
Denim-specific, 6 thread
More Overlock Machines

Four more edges, covered.

From everyday overlocking to differential feeding and cylinder-bed work, each head below is tuned for a specific fabric and seam.

Jack C5C overlock machine
Overlock
C5C
0-second trimming Oil-free

High-efficiency computerized overlock with 0-second thread trimming and lifting, Smart Rhino Feeding and three-mode seamless switching between thin, medium and thick fabric.

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Jack C5T-A differential overlock machine
Overlock
C5T-A
Differential feed Heavy material

Top and bottom differential feeding stops split layers on long pieces, with a higher presser foot lift for home textiles, thermal underwear and car seat cushions.

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Jack JK-797TDI cylinder-bed overlock machine
Overlock
JK-797TDI
148mm cylinder bed Small tubular

Small cylinder-bed, variable top-feed power-saving overlock for necklines, cuffs and socks, with a top differential device for strong fabric feeding.

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Automatic collar attaching machine
Overlock
Auto Collar Attaching
Automated Collar sets

An overlock head mounted on an extended folding table with integrated waste collection, purpose-built to automate collar attaching on high-volume knitwear lines.