Electronic pattern control
Select a stored tack rather than recreating it by hand. Pattern scaling lets you adjust the stitch layout within the machine and clamp limits.
Juki LK-1900S-HS • Heavy-material bartacking
Consistent, repeatable bartacks for jeans, workwear and suitable bag-making applications.
The Juki LK-1900S-HS is the heavy-material version of Juki’s Simple Series electronic bartacker. It helps workrooms produce neat reinforcement at pocket openings, belt loops and other stress points without manually guiding every stitch.
Choose the pattern and settings for your job, position the work and let the controlled sewing cycle repeat the tack.

Select a stored tack rather than recreating it by hand. Pattern scaling lets you adjust the stitch layout within the machine and clamp limits.
Direct drive, automatic thread trimming and a powered work-clamp lifter reduce the manual steps between pieces.
The adjustable LED helps illuminate the needle area when positioning pocket edges, loops and layered fabric.
The right version for heavier fabric
This listing is for the HS heavy-material configuration, not the standard suiting version. Juki’s application image shows the difference: the H type is pictured on the right, bartacking a jeans seam.
For webbing, straps or bag components, check the actual layers, thread and tack dimensions before ordering. Material suitability depends on the complete setup, not simply the fabric name.

The 51 standard patterns include several bartack shapes and straight-line tacks. Not every pattern works with the same clamp: a different work-clamp foot, feed plate or other parts may be needed.
The 30 × 40mm sewing area is the machine’s travel envelope—not a promise that the supplied clamp suits every shape. For a custom pattern or fixture, send your application details online so the required setup and any additional work can be confirmed.
See the English brochure and instruction manual below for the pattern tables and clamp guidance.
| Model | Juki LK-1900S-HS |
|---|---|
| Application class | Heavy-weight materials |
| Sewing area | 30mm length × 40mm width |
| Maximum sewing speed | 3,200 stitches/min; Juki’s delivery setting is 2,700 stitches/min. Actual speed depends on pattern and sewing conditions. |
| Stitch length | 0.1–10mm, adjustable in 0.1mm increments |
| Work-clamp lift | 13mm standard; up to 17mm using the reverse-rotation needle-up function |
| Needle supplied specification | DP × 17, size #21 for the HS model |
| Lubrication | Semi-dry head with small-quantity hook lubrication |
| Power | Single-phase 200–240V; direct-drive AC servo motor |
Supplied assembled with table, motor and thread stand, mounted on wheels. Included accessories comprise oil, bobbins, needles and a screwdriver.
One-year return-to-base warranty. Discuss any specific pattern, clamp or material requirements before ordering.
These series documents also cover other configurations. Use the LK-1900S heavy-material information for this model.
Use the availability and ordering options above. Nationwide freight can be arranged for your machine. For application or delivery questions, contact us online.