Product Overview

The Juki LK-1900A is a high-speed, computer-controlled bartacking (tack) sewing machine. It is renowned in the apparel industry for achieving the world’s highest sewing speed of 3,000 rpm, significantly improving productivity. It is designed to automate reinforced stitching processes such as belt loops, pocket corners, and various other tacking patterns with precision and consistency .

Key Specifications

Here are the technical details for the standard LK-1900A-SS model:

Features and Benefits

1. World-Class Speed and Productivity

The LK-1900A boasts a maximum sewing speed of 3,000 rpm. Beyond top speed, it enhances productivity by accelerating starting, stopping, thread trimming, and automatic presser foot lifting. This reduces total cycle time by approximately 30% compared to previous models, allowing for more operations per day .

2. Versatile Sewing Area and Patterns

With a generous sewing area of 30 mm x 40 mm, the machine accommodates a wide variety of tacking shapes. It comes standard with 50 sewing patterns, including semi-lunar, round, and radial bartacks, suitable for belt-loop attachment and other reinforcement needs. It can store up to 200 patterns in memory and up to 20,000 stitches .

3. Advanced Technology for Superior Seam Quality

• Needle Thread Grasping Mechanism: A newly developed mechanism prevents the thread from slipping off the needle at the start of sewing, eliminating skipped stitches and thread tangling on the underside of the material .

• Active Tension Control: The electronic thread tension control system allows operators to set, store, and reproduce needle thread tension via the operation panel. Tension can even be adjusted stitch-by-stitch to handle multi-layered sections of fabric perfectly .

4. Clean Sewing with Dry-Head Technology

Thanks to advanced dry-head technology, the arm section (needle bar and thread take-up) requires no lubrication. This eliminates the risk of oil stains contaminating the product, ensuring a clean finish essential for high-quality garments .

5. Enhanced Workability and Operator Comfort

• Auto-Lifter: A stepping-motor auto-lifter is standard, reducing operator fatigue. It features a double-step stroke for easier material positioning .

• Direct-Drive System: The compact AC servomotor is directly connected to the head, reducing vibration and noise for a more comfortable working environment .

• Easy Correction: The sewing starting point can be corrected in the X and Y directions directly from the panel, simplifying pattern adjustments .