Innovative automatic 1-needle lockstitch machine equipped with an integrated energy-saving motor mounted in the head, directly on the main shaft of the machine (DIRECT DRIVE system), which guarantees quiet and reliable operation and lower power consumption.
The machine does not have a typical oil sump. A small amount of oil is in a closed container to prevent it from getting dirty. This solution guarantees lower oil consumption and better lubrication of machine mechanisms.
Bottom feed transport. Designed for sewing light and medium materials (A4 version) and heavy (version A4-H). The modern design of the JACK Lockstitch A4S machine provides better ventilation of the engine, what enable faster and more efficient working, as well as a longer machine life. The improved construction of the transport system and pressure a fabric, ensures the increase of the fabric thickness range.
“Semi-dry-head” – Oil comes to the hooks and connecting rods. In the machine head does not reach directly of needle bar and the risk of staining the material decreases considerably. Made of carbon needle bar (with increased flexibility and resistance to abrasion), does not need lubrication.
A4S-N has shorter thread trim (3mm) with special device to prevent bird’s nest at the beginning of sewing.