This machine is semi-oil head direct drive lockstitch sewing machine; it is driven by synchronous belts, needle bar, thread take-up lever, and hook is without oil. It is provided with automatic thread trimmer, automatic needle positioning, automatic stitch amount setter, automatic thread wipe, automatic reverse feeding and many other sewing modes. Suitable for sewing shirts, uniforms and sportswear, and also suitable for sewing portfolio, purses, shoes, jeans and other medium-heavy materials; especially suitable for sewing trademarks, pocket, sleeve-cuffs, it can be operated with high quality and high efficiency. The brand-new built-in direct drive servo motor is the most optimized design, which realizes the low noise and low tremble. Some major parts adopts the parts from Japan, to prolong the service life.