Suitable for sewing light to medium weight materials such as knitwear, cotton, wool, chemica1 fiber fabrics or light-weight leather. Thanks to its rational structure, the machine provides good performance, stability and durability, with low level of noise, ease of use, as well as an attractive appearance. The fully automatic lubricating system and oil control valves prevent oil stains on cloth. The machine, utilizing general components, which can be attained easily when replacement, is an ideal sewing equipment for apparel industry.