Juki LK-1903BB

Computer-controlled, High-speed, Lockstitch, Button Sewing Machine

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The Juki LK-1903BB is provided with two new functions; i.e., “bird’s nest preventing function” and “shorter-thread remaining function”. This is the world’s first lockstitch button sewing machine provided with both of these two functions.

Higher productivity
The Juki LK-1903BB achieves sewing speed of 2,700sti/min. The machine’s starting, stopping, thread-trimming and automatic presser lifting speeds have been increased to significantly shorten total cycle time.

Excellent seam quality.
Needle thread grasping mechanism helps produce consistent knot tying at the beginning of sewing.

Many different sewing patterns.
The Juki LK-1903BB  is provided as standard with 50 different sewing patterns. The machine permits easy changeover of sewing patterns for effortless execution of an inexhaustible range of sewing specifications.

The Juki LK-1903BB is also able to sew buttons using the same data used for the LK-1903 (Data in EP-ROM are enabled by conversion).

The Juki LK-1903BB is provided as standard with the active tension (electronic thread tension control mechanism).
Since the Juki LK-1903BB is provided with an active tension mechanism, it is able to set a needle thread tension that matches various sewing conditions (such as thread, material and sewing speed) on the operation panel, store the data in memory and reproduce it.

The needle thread tension can be separated according to stitching type or portion of a seam, such as the beginning part of the seam, base stitched part, zigzag stitched part and end of the seam (fastening stitch).

When the operation panel is used in combination with the active tension, the needle thread tension can be set on a stitch-by-stitch basis. This helps eliminate undesired thread tension variations at a multi-layered part of a material or with sewing direction, thereby contributing to upgraded seam quality.

Model Number Juki LK-1903BB Juki LK-1903B Juki LK-1903B/BR35
 Max. sewing speed  2,700sti/min※
 Button size  Type : Round-shaped, flat button
Size : φ8~φ20mm
301 : φ8~φ20
 Type : Round-shaped, flat button
Size : φ8~φ32mm
301 : φ8~φ20
302 : φ10~φ20
OPTION : φ15~φ32
 Type : Round-shaped, flat button (2-holed, 4-holed)
Size : φ9~20mm
For small button: φ10~φ15mm
For medium-sized button: φ12~φ18mm
(Those that are smaller than φ10mm
or larger than φ18mm must be specially ordered.)
Thickness: 1.8~3.5mm
 Stitch length  0.1~10mm (0.1mm step)
 Needle bar stroke  45.7mm
 Lift of the work clamp foot  Max. 10mm  Max. 13mm  Max. 11mm
 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 (#11)  DP×17 (#14)
 Hook  Standard shuttle hook
 Number of stitches that
can be stored in memory
 Max. 20,000 stitches
 Number of standard patterns  34 patterns  50 patterns
 Number of data that can be input  200 patterns
 Enlarging/Reducing facility  20~200%(1% step), Pattern enlargement /reduction can be done by increasing /decreasing the stitch length
 Memory medium  Internal-organs memory
 Bobbin thread counter  Provided as standard (up/down method)
 Bird’s nest preventing /
Shorter-thread remaining functions
 Provided  –
 Supplying and sorting of button  –  –  Vibration system
 Button feed  Horizontal forced button-feed mechanism
 Button feed mode  –  –  Automatic feed mode, non-feed mode, and small-lot sewing mode
 Lubrication  Hook: minute-quantity lubrication
 Lubricating oil  JUKI New Defrix Oil No.2 (equivalent to ISO VG32)
Sewing machine motor  Compact AC servomotor (direct-drive system)
Power consumption  250VA  250VA  320VA
Weight  Machine head (include motor) 42kg,
Control box 5.1kg
 Machine head (include motor) 42kg,
Control box 5.1kg
 131kg (include machine head, table and BR35)

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 LK-1903BB

Juki LK-1903BB Spare Parts

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