Juki LBH-1790AB

Computer-controlled, High-speed, Buttonholing Machine
The World’s First – Shorter-Thread Remaining Functions

Jukilbh1790a

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The newly-developed shorter-thread remaining mechanism trims the tread short and eliminated the trouble of manual thread nipping.

Excellent operability by Digitization

  • Higher productivity
    The maximum sewing speed is 4,200 sti/min., and the jump speed is 200 mm/s. The cycle time has been further reduced for continuous sewing.
  • Cycle sewing and continuous sewing.
    • Cycle sewing
      Twenty different programs can be registered, and as many as 15
      different patterns can be stored in one program.
    • Continuous sewing
      The Juki LBH-1790AB is able to continuously sew two or more different patterns without requiring the work clamp foot to be lifted. As may as 20 programs can be registered, and six different patterns can be stored in one program. (Related parts need to be exchanged for optional ones.)
  • All drive mechanisms are electronically controlled
    • Electronic control of the material feed mechanism, needle feed mechanism, needle thread trimming mechanism, bobbin thread trimming mechanism, cloth trimming mechanism, presser lifter mechanism and other mechanisms has been achieved.
    • All adjustment values are digitalized to enable the operator to set and store those values on the operation panel.
Model Number Juki LBH-1790AB
Sewing speed Max. 4,200sti/min, Normal 3,600sti/min
When the non-lubricated hook (optional) is used: 3,300sti/min
Needle bar stroke 34.6mm
Size of cloth cutting knife 6.4~31.8mm (1/4″~1-1/4″)
Bartacking width Max. 5.0mm (with special-specification part: Max. 10mm*)
Buttonhole length Max. 41mm (optional: 70mm, 120mm) , LBH1795:120mm
Precision of needle throwing mechanism 0.05mm
Needle thread tension Active tension (electronic thread tension control system)
Number of stitches Automatically computed from the size of the buttonhole and stitch pitch
Needle (at the time of delivery) DP×5 (#11J) #11J~#14J
Hook DP type, full-rotary hook
Non-lubricated hook (optional)
Lift of the work clamp 14mm (17mm when the reverse-rotation needle-up function is used)
Auto-lifter Provided as standard (stepping motor type)
Needle throwing system Stepping motor
Cloth feeding system Intermittent feed by stepping motor
Cloth cutting knife system Stepping motor
Number of standard patterns 31 patterns
Number of patterns that can be input Max. 99 patterns
Bobbin thread winder Built-in the machine head
Machine head drive system Compact AC servomotor (direct-drive system)
Power requirement/ Power consumption Compact AC servomotor (direct-drive system)
Lubrication Only the hook section needs a minute-quantity lubrication
Lubricating oil Hook: JUKI New Defrix Oil No.1 (equivalent to ISO VG7)
Weight Machine head (include motor) 55kg, Control box 6kg

For all Industrial Sewing Machine Spare Parts, Needles & Accessories, click the link below to our Parent company, College Sewing Machine Parts Ltd, the UK’s largest Industrial Sewing Machine Spare Parts Stockist. Juki Industrial Parts Agents, sewing machine parts for the Juki LBH-1790AB

Juki LBH-1790AB Spare Parts

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