JUKI LBH-1790 Computer-Controlled High-Speed Buttonholing Machine

Description

JUKI LBH-1790 Computer-Controlled High-Speed Buttonholing Machine

High-speed computerized industrial buttonholing machine designed for producing precise, consistent and high-quality buttonholes on a wide range of garments. The JUKI LBH-1790 is a single-needle, lockstitch buttonholing machine equipped with electronically controlled mechanisms for fabric feeding, needle movement, thread trimming, cloth cutting and work-clamp lifting.

The machine uses a compact direct-drive AC servomotor for smooth, quiet and energy-efficient operation. Its computerized control system allows sewing parameters and buttonhole patterns to be programmed and stored digitally, making it suitable for both large-scale production and flexible garment manufacturing.

The LBH-1790 features electronic thread tension control, automatic thread trimming, automatic work-clamp lifting and multiple knife-dropping functions. With a maximum sewing speed of up to 4,200 stitches per minute, it delivers high productivity while maintaining accurate and consistent buttonhole quality.

Key Features

• Computer-controlled high-speed industrial buttonholing machine
• Single-needle lockstitch buttonhole system
• Maximum sewing speed up to 4,200 stitches/min
• Compact AC servomotor direct-drive system
• Electronic control of needle movement and material feeding
• Active electronic thread tension control
• Automatic needle and bobbin thread trimming
• Automatic stepping-motor-driven work-clamp lifter
• Multiple knife-dropping function for different buttonhole sizes
• Programmable sewing patterns and parameters
• 31 standard buttonhole patterns
• Memory capacity for up to 99 patterns
• Cycle sewing and continuous sewing functions
• Adjustable LED work light
• USB port for data management and software updates
• Quiet and stable operation
• Semi-dry / minute-quantity hook lubrication system

Specifications

• Brand: JUKI
• Model: LBH-1790
• Machine Type: Computer-Controlled Buttonholing Machine
• Stitch Type: Lockstitch Buttonhole
• Number of Needles: 1
• Number of Threads: 2
• Maximum Sewing Speed: 4,200 stitches/min
• Standard Sewing Speed: 3,600 stitches/min
• Maximum Buttonhole Length: 41mm
• Optional Buttonhole Length: Up to 70mm or 120mm, depending on configuration
• Cloth Cutting Knife Size: 6.4–31.8mm
• Bartacking Width: Up to 5mm
• Optional Bartacking Width: Up to 10mm with special parts
• Number of Standard Patterns: 31
• Pattern Memory Capacity: Up to 99 Patterns
• Needle System: DP×5
• Recommended Needle Size: #11–#14
• Work Clamp Lift: 14mm
• Maximum Work Clamp Lift: Up to 17mm
• Hook: DP-Type Full-Rotary Hook
• Thread Tension: Active Electronic Thread Tension Control
• Material Feed System: Stepping Motor Controlled
• Cloth Cutting System: Stepping Motor Controlled
• Auto Lifter: Standard Stepping Motor Type
• Machine Drive: Compact AC Servomotor Direct Drive
• Lubrication: Minute-Quantity Hook Lubrication
• Machine Head Weight: Approximately 55kg

These specifications are based on the JUKI LBH-1790 series documentation; exact details may vary by subclass or production version.

Suitable For: Dress Shirts • Casual Shirts • Blouses • Ladies Wear • Uniforms • Workwear • Jackets • Trousers • Knitwear • Stretch Fabrics • Garment Manufacturing • Industrial Buttonhole Production • High-Volume Apparel Production