This cylinder bed heavy duty lockstitch sewing machine is especially designed for production of luggage case and luggage bag, featuring original appearance and rigid structure. It is designed with sliding lever thread take-up, vertical rotating hook, dog band for driving arm shaft and hook shaft, compound feed by presser foot, feed dog and needle, and lever type stitch regulator. With high presser foot lift, longer stitch length and cylinder bed. it is available to sew heavy duty luggage suitcase, seat cushion, especially for edge seaming on luggage bags.