KF-640-H7-D4

KRAFFT KF-640-H7-D4 is a modern automatic single-needle lockstitch machine for sewing heavyweight materials such as leather, furniture and automotive upholstery or technical materials. With top and bottom feed (bottom feed + walking foot), it guarantees stable, uniform seams even in demanding conditions.

The machine has a large-capacity hook, so it can use thick threads and run longer without frequent bobbin changes. The energy-saving direct-drive servo motor ensures quiet, smooth and economical operation, and the long arm (as much as 37 cm) allows comfortable sewing of large pieces.

AUTOMATIC FUNCTIONS:

• Thread trimming
• Backtacking
• Presser foot lift
• Needle positioning
• Soft start
• Thread nipper

The machine also offers independent pressure on the inner and outer feet, a clear control panel and an integrated LED light that illuminates the work area. It does not need a compressed air supply, which makes installation and use easier.

TECHNICAL SPECIFICATIONS:

• Sewing speed: 2,000 spm
• Stitch length: up to 8 mm
• Presser foot lift: 15 mm
• Needle system: 135 × 17
• Needle size range: Nm 125-180
• Thread size range: Nm 60/3 to 20/3
• Large-capacity hook
• Automatic lubrication
• Power supply: 230 V / 50 Hz

MAIN BENEFITS:

• Top and bottom feed: perfect control of heavyweight and multi-layer material
• Large hook: more thread on the bobbin, ideal for thick threads
• Long arm: as much as 37 cm clearance under the arm for sewing large pieces
• Energy-saving direct-drive servo motor: quiet, stable operation with lower energy consumption
• Full automation: thread trimming, backtacking, needle positioning and more
• Built-in LED light: a brightly lit sewing area for comfortable work

KRAFFT KF-640-H7-D4 is the ideal choice for upholstery workshops and manufacturers of heavy clothing, small leather goods and technical components, where precision, productivity and operator comfort count.