Jack A4B is a fully automatic single-needle lockstitch machine with automatic functions, lower dog feed and an energy-saving engine built into the machine head (Direct Drive), which guarantees quiet and reliable operation and reduced electricity consumption. The machine has a built-in operating panel.
Presser foot lift
Bartacking (fastening) while sewing
The machine uses a stepper motor that controls the stitch length setting, locking function and presser foot-lifting function. This solution significantly reduces the noise level during locking, allows you to program the presser foot lifting height, and allows you to precisely set the stitch length with an accuracy of 0.1 mm. Central lubrication (traditional oil pan).
Sewing speed up to 5000 s.p.m.
Stitch length up to 5 mm
Presser’s foot lift to 13 mm
Three function buttons located at the needle bar: 1/2 of the stitch length, adding a stitch, bartacking