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Computer-controlled, High-speed, Buttonholing Machine

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LBH-1790S

LBH-1790S

Computer-controlled, High-speed, Buttonholing Machine

JUKI Simple Series sewing machine LBH-1790S has been designed to have simplified and narrowed down capabilities that are essentially required to produce JUKI's established seam quality. In addition, it supports the operator with the voice guidance system to improve work efficiency.

JUKI's established quality is achieved with simplified functions

Higher productivity

  • This sewing machine achieves higher productivity with its improved capabilities such as the maximum sewing speed of 4,200 sti/min, quick acceleration at the beginning of sewing and quick deceleration at the end of sewing, increased thread trimming speed and the auto-lifter performance.

Multiple-times knife dropping

  • Thanks to JUKI's unique multiple-times knife dropping function, the knife replacement is no longer required even when the buttonholing size is changed. In the case of small-lot production, frequent change in the sewing size and / or sewing of different cycle sewing patterns with different sewing sizes are required. In such a case, the number of times to drop the cloth trimming knife are automatically set according to the buttonholing size.

Easy changeover of sewing setting

  • Changeover between purl stitching and whip stitching and between single stitching and double stitching can be carried out with ease.

Basting stitch on elastic materials

  • The basting stitch is effective on elastic materials such as knits. 

Main functions driven electrically

  • The electric-driven mechanism has been adopted for the work clamp foot lifter, needle / bobbin thread trimmers, work clamp foot pressure regulator, cloth trimming knife and thread tension controllers, thereby ensuring stable sewing that produces beautiful seams with less operating noise.

Active tension
(electronic thread tension control mechanism)

  • The needle thread tension can be separately set for the parallel section and bartacking section of the buttonhole seam according to various sewing conditions (thread, material, sewing speed, etc.) given, and those setting data can be stored in memory.
  • The needle thread tension can be changed over at the parallel and bartacking section of the buttonhole seam without fail, thereby producing beautifully-finished buttonhole stitch shape.
  • The needle thread tension to be employed at the beginning and end of sewing can be set individually. This helps prevent slip-off of the thread at the beginning of sewing and unravel of the finished seam.
Model LBH-1790SS
Sewing speed 4,200sti/min (at the time of delivery : 3,600sti/min)
Size of cloth cutting knife 6.4~31.8mm (1/4"~1-1/4")
Buttonhole length Max. 41mm
Lift of the work clamp 14mm (17mm when the reverse-rotation needle-up function is used)
Number of standard patterns 31 patterns
Number of patterns that can be input Max. 99 patterns
Machine head drive system Compact AC servomotor (direct-drive system)
Needle (at the time of delivery) DP×5(#11J)#11J~#14J