This machine adopts single needle, slidinglever take-up thread, double capacith big hook. It has a special compound feed system(feed dog, needle and presser foot), long presser foot stroke, high presser foot lift and long stitch length, so that can keep no slip betweeen the top and bottom materials. Besides, it also can sew hard feed and heavy materials easily. The machine can running smoothly by special oil system. With safety clutch device, it can protect the hook and mechanism when the machine is out of charge.
This machine is widely used on making heavy duty materials, such as suitcase, tents, sofa, etc.