K4 SERIES

JACK K4 Interlock

A series of modern, 3-needle interlock machines with a cylinder bed, equipped with an energy-saving motor mounted in the head (Direct Drive system), which guarantees quiet and reliable operation and lower power consumption. Machines dedicated to sew closed circuit in blouses, T-shirts and other knitted products, decorative stitching and many other operations. The bottom differential transport ensures a high quality stitch, even with very inconvenient Lycra materials. The machine is equpped in LED lighting (with the possibility of 3-level adjustment of light intensity).

Available subclasses:

  • JACK K4-D-01GB – interlock machine without automatic functions
  • JACK K4-UT-01GB – interlock machine with automatic functions
  • JACK K4-UT-35AC – interlock machine with automatic functions and with left hand fabric trimmer

Technical parameters:

  • sewing speed up to 5500 stitches / min.
  • presser foot lift up to 6.2 mm
  • standard needle gauges: 5.6 mm or 6.4 mm (optionally – option of another gauges)
ModelNeedlesNumber of needlesNumber of threadsNeedle gauge (mm)Stitch width (mm)Differential transportPresser foot lift (mm)Sewing speed:
stitches / min
K4-D-01GB11#/14#351.5 - 4.55.6/6.40.8 - 1.36.25500
K4-UT-01GB11#/14#351.5 - 4.55.6/6.40.8 - 1.36.25500
K4-UT-35AC11#/14#351.5 - 4.55.6/6.40.8 - 1.36.25500

JACK K4 Interlock

For Heavy and Light Sewing

High quality stitch provided independently of material thickness. Maximum presser foot lift 6.2 mm

JACK K4 Interlock

Automatic Functions

Thanks to the automatic thread cutting and presser foot lift, your production efficiency will increase to 40%.