Adopted with direct-drive servo motor, the machine has automatic presser-foot lifting function. This machine applies to universal buttonholing on all light to medium-heavy knitting materials, cotton fabrics and man-made fiber, able to sew flat stitch and triangle stitch with beautiful and solid seam. It is with high sewing speed, and its buttonholing size and stitch number are adjustable as well as buttonholing positioning can be easily adjusted. It adopts automatic lubrication system and automatic thread trimming mechanism. This further enhances ease of operation.
