GB680-1 large sewing machine for thick material adopts single straight needle, oscillating shuttle thread hooking mechanism. upper and lower combined feeding and back sewing unit. It is easy to operate. It forms 2-thread lock stitch. This machine adopts special upper feeding mechanism and presser cross lifting mechanism, besides the various properties same with other general industrial sewing machine, it has advan-tages of same feeding size of upper layer and lower layer when sewing bulked sewing material and medium and thick material with bigger potential moving property; easy to feeding when make high and low over-lap sewing and climbing sewing. It has steady stitch size, smooth and beautiful stitch. It is easy to operate and has steady property when sewing hick material. At the same time, it could be regulated according to special re-quirement of sewing technology, so the difference of feeding size between upper layer and lower layer could achieve the desired requirement, the sewing quality and result could be improved clearly

 

1	Speed of sewing	800 SPM/Min
2	Length of needling distance	0～13mm
3	Presser lifting height	Handle control:14mm Foot control:22mm
4	Stroke	58mm
5	Operating space	200×420mm
6	Shape of head	736×270×590mm