Juki LBH-781 Industrial Buttonhole (Kaaj) Sewing Machine | Used | Tested & Production-Ready

Description

The Juki LBH-781 is a legendary high-speed industrial buttonholing (Kaaj) machine, recognized as the global standard for formal shirt and workwear production. This used unit is engineered to create smooth, high-tension buttonholes with consistent cutting precision. Designed with a rugged mechanical cam system, the LBH-781 handles light to medium fabrics with ease, offering garment manufacturers a durable, low-maintenance finishing solution at a significantly lower capital cost than new electronic models.

Advantages

• Uniform buttonholes with clean cutting finish

• Consistent stitch density across long production runs

• Proven Juki reliability for factory-scale operations

• Lower acquisition cost compared to new buttonhole units

Machine Condition & Testing

Every used Juki LBH-781 undergoes a rigorous mechanical refurbishment protocol to ensure factory-grade reliability:

• Knife Mechanism Audit: The fabric-cutting knife and drive system are checked for sharp, clean cuts without fraying or delayed activation.

• Cam & Gear Inspection: Internal gears and cams are verified for minimal wear to ensure precise stitch density and shape.

• Tension Calibration: Tested on shirting and uniform fabrics to ensure the “purl” (bead) of the buttonhole is tight and uniform.

• Lubrication System Check: Centralized oiling system verified to ensure all high-speed components are properly cooled during continuous runs.

• Motor Performance: Paired with a high-torque motor tested for immediate start-stop response essential for buttonholing cycles.

Installation and Setup

This machine ships ready for installation. Connect to standard 220V single-phase power supply, mount on industrial sewing table, thread the machine, and begin production.

Installation support included:

• Basic setup guidance provided
• Threading diagram supplied
• Initial adjustment recommendations
• Operational manual (if available)

Most operators familiar with industrial lockstitch machines can complete installation and begin production within 2-3 hours of delivery.

FAQs

Is this machine fully tested before delivery? Yes. Every Juki LBH-781 undergoes a 50-cycle continuous sew-off test to ensure the knife-cut and stitch-wrap are perfectly synchronized.

Do you provide installation support? The machine is supplied as a complete set (Head, Table, Stand, and Motor). We provide video-call installation assistance and can arrange for a technician in major garment clusters.

What is the condition of the internal components? We guarantee that all critical components, including the rotary hook and cams, are in excellent health. Only machines with genuine Japanese metallurgy are included in our certified stock.