F4 SERIES

JACK Lockstitch F4

1-needle lockstitch machine for sewing light and medium materials (also available sub-class H for heavy sewing). Equipped with an energy-saving motor mounted in the head (Direct Drive), which guarantees quiet and reliable operation and lower power consumption. JACK Lockstitch F4 is equipped also in simple to use control panel for speed control, needle positioning and quick return to factory settings. Equipped with built-in LED lamp with choice of light intensity level.

Technical parameters: 

  • Max Sewing speed: 5000 stitches/min
  • Max Stitch Lenght: 5 mm
  • Max Presser Foot Lift: 5 mm by Hand, 13 mm by Foot Pedal (electronic)
ModelNeedlesNumber of threadsStitch length (mm)Presser foot lift (mm)Sewing speed: stitches / min
F4DBX1 11-18#255-135000
F4-HDPX5 18-21#255-133500
F4-H-7DPX5 18-21#275-133500

JACK Lockstitch F4

Energy Saving

Built-in energy-saving motor that saves up to 71% energy, compared to a clutch motor and intelligent stand-by mode which turns off the machine when inactive.

JACK Lockstitch F4

Control Panel

Easy-to-use control panel with speed control, needle positioning and Reset function to restore factory settings.

JACK Lockstitch F4

Adding Stitches Option

Stitches can be easily added by using a dedicated button.

JACK Lockstitch F4

Available Subclasses

For light and heavy sewing.

JACK Lockstitch F4

Safety Sensor

Sensor that disconnects the machine during service activities, ensuring the operator’s safety.