Computer-controlled, High-speed, Bartacking Sewing System

Inspire the Knowledge in Sewing Adjustment Epoch-making Sewing Systems in history.
Digital sewing system proposes the production process added with a computerized new value to all the people who engage in production.

Product overview

Product features

  • Machine is mounted with inbuilt NFC (Near Field Communication) and communication devices capable of a 2-way data transmission

    Data on sewing machine adjustments made according to the product to be sewn can be transferred to a commercially-available Android tablet in contactless mode. This enables quick check for uniform settings as well as confirmation of conditions of sewing machines in a sewing line, thereby facilitating setup changes.
    The operation panel is also provided as standard with a USB port. Data management and software update can be carried out with ease using a USB thumb drive.
    Data items of sewing can be numerically managed to ensure “stable quality” and “reduction in time required for setup changes”. Quantified sewing data can be externally taken from the sewing machine using an Android tablet or USB thumb drive.
    *Android OS Version 6.0 is recommended to use JUKI Smart APP.
    (Operation is confirmed with respect to Versions 5.0 and later. )
    Contact JUKI distributor in your area for how to use the application software.

  • Bird's nest preventing / Shorter-thread remaining functions (LK-1900BNB)

    Thanks to the Bird’s nest preventing / shorter-thread remaining functions, manual thread-nipping is no longer required and gives soft and smooth feeling on the bartaking sections where directly contact skin such as brassieres and tank tops.

    The sewing machine eliminates so-called “bird’s nests”
    (thread tangling in on the wrong side of the material at the beginning of sewing).

    The thread is retained at the beginning of sewing and any excess thread is trimmed during sewing. As a result, the length of thread sewn in the seam is shortened, thereby achieving high-quality sewing performance while preventing thread from tangling in on the wrong side “of the material.”

    Length of thread remaining on the material at the end of sewing has been reduced to 2 mm or less.*

    The newly-developed shorter-thread remaining mechanism trims the thread shorter after the regular thread trimming operation. Additionally, thread waste produced by thread trimming is withdrawn by suction. Thanks to this mechanism, the trouble of manual thread nipping is avoided.
    * Use #60-80 (TEX22-30) polyester spun thread

Basic performance

  • Higher productivity

    The machine achieves sewing speed of 3,200sti/min. The machine's starting, stopping, thread-trimming and automatic presser lifting speeds have been increased to significantly shorten total cycle time.

  • Excellent workability and operability
    (Low-noise and low-vibration)

    • The direct-drive head (with no belt), which is directly connected to a compact AC servomotor, achieves outstanding. This head helps create a comfortable working environment with reduced vibration and noise.
    • The arm section of the machine head is fitted with a hand pulley. This allows the operator to visually check the needle entry points.
  • Excellent seam quality

    Needle thread grasping mechanism helps produce consistent knot tying at the beginning of sewing. (This device has been factory-set to “invoking prohibited” status at the time of delivery.)

  • The sewing starting point can be corrected

    In cases where the needle entry point for button sewing is to be corrected, the sewing starting point can be corrected without the adjustment of the relevant mechanism.

  • Auto-lifter mechanism utilizing a system

    • The machine is provided as standard with auto-lifter that uses a stepping-motor system. This helps reduce operator fatigue.
    • It is also possible to change over the stroke of the auto-lifter from a onestep stroke to a double-step stroke, which offers easier positioning of a material on the machine. For the double-step stroke, an intermediate stopping height can be established on the operation panel.
    • The work clamp foot lift can be set to a maximum of 17mm. (Standard 14mm)
  • Oil stains are eliminated

    • Thanks to our advanced dry-head technology, the frame (needle bar and thread take-up) no longer requires lubrication. This prevents the material from being stained with lubricating oil.
    • Just a small quantity of clean oil is supplied from the oil tank to the hook.
  • Eco-friendly power saving

    An encoder is installed in the pulse motor, thereby achieving substantially improved power-consumption saving.

  • LED Light

    The LED light can adjust the light intensity to 5 levels, and Off setting is also possible. 
    The operator can set the brightness which is easy to work, improving work efficiency.

  • Many different models are prepared according to the type of materials

    • The LK-1900BN model comes in five different subclass models, such as S type (standard), H type (for heavy-weight materials), F type (for foundation), M type (for knits and knitted materials), W type (with a large shuttle hook for heavy-weight materials) and (bird’s nest preventing / shorter - thread remaining functions), to offer a choice according to any application.
    • The needle's penetrating force into the material has been increased. This provides an improved responsiveness to heavy-weight materials for the H type machine.
    • The W type has adopted a large shuttle hook, which reduces the frequency of bobbin-thread changing to enable highly efficient sewing work.

  • Area expansion model 
    LK-1900BNSS000/X75024

    This machine is a special model that expands the sewing area to 50mm (W) × 50 (L) mm. It corresponds to the sewing size such as the elastictape connection of the boxer pants, the box sewing of the sleeve spread, and the  attach the Velcro.

    • The presser foot of this machine is equipped with the standard presser foot (40mm(W) × 30mm(L) ). Please arrange the presser foot as necessary.

  • TABLE OF THE STANDARD PATTERNS

Specification

Model name LK-1900BN-SS LK-1900BN-HS LK-1900BN-FS LK-1900BN-MS LK-1900BN-WS
Application Standard For heavy-weight materials For foundation For knits and knitted materials With large hook for heavy-weight materials
Max. sewing speed 3,200sti/min* 2,700sti/min*
Sewing area 30mm (L) × 40mm (W)
Stitch length 0.1~10mm (0.1mm step)
Needle bar stroke 41.2mm
Lift of the work clamp foot Standard 14mm (17mm when the reverse-rotation needle-up function)
Auto-lifter Provided as standard (stepping motor type)
Needle thread tension Active tension (electronic thread tension control system)
Needle (at the time of delivery) DP×5 (#14) DP×17 (#21) DP×5 (#11) DP×5 (#11) DP×17 (#21)
Hook Standard shuttle hook Large shuttle hook
Number of stitches
that can be stored in memory
Max. 20,000 stitches
Number of standard patterns 51 patterns
Number of data that can be input 200 patterns (for up to 150 patterns, sewing data can be added.)
Enlarging/Reducing facility 20~200% (1% step), Pattern enlargement/reduction can be done by increasing/decreasing the stitch length
Memory method Internal-organs memory
Bobbin thread counter Provided as standard (up/down method)
Lubrication Hook: minute-quantity lubrication
Lubricating oil JUKI New Defrix Oil No.2 (equivalent to ISO VG32)
Sewing machine motor 450W compact AC servomotor (direct-drive system)
Power consumption 250VA
Weight Machine head (include motor) 42kg, Control box 5.6kg

 

Model name Bird's nest preventing /
Shorter-thread remaining functions
LK-1900BN-BS LK-1900BN-BF
Application Standard For foundation
Max. sewing speed 3,200sti/min*
Sewing area 30mm (L) × 40mm (W)
Stitch length 0.1~10mm (0.1mm step)
Needle bar stroke 41.2mm
Lift of the work clamp foot Standard 11mm
(by using the reverse-rotation needle-up function 14mm)
Auto-lifter Provided as standard (stepping motor type)
Needle thread tension Active tension
(electronic thread tension control system)
Needle (at the time of delivery) DP×17 (#14) DP×17 (#11)
Hook Standard shuttle hook
Number of stitches
that can be stored in memory
Max. 20,000 stitches
Applicable pattern number 50 patterns
Number of data that can be input 200 patterns (for up to 150 patterns, sewing data can be added.)
Enlarging/Reducing facility 20~200% (1% step),
Pattern enlargement/reduction can be done by increasing/decreasing the stitch length
Memory method Internal-organs memory
Material drawing amount -
Bobbin thread counter Provided as standard (up/down method)
Lubrication Hook: minute-quantity lubrication
Lubricating oil JUKI New Defrix Oil No.2 (equivalent to ISO VG32)
Sewing machine motor 450W compact AC servomotor (direct-drive system)
Power consumption 250VA
Weight Machine head (include motor) 42kg, Control box 5.6kg
Air consumption 6 L/cycle

*sti/min is the abbreviation for “stitches per minute”
*Other company names and product names/brand names are trademarks or registered trademarks of the respective companies.

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