Single/double needle heavy duty compound feed lockstitch sewing machine

This series is the latest of heavy duty compound feed lockstitch sewing machines, which is designed with large vertical rotating hooks for thread loop catching and sliding bar for thread up-taking. It has been sub-classed into single needle and two needle. The application of needle bearings for arm shaft and hook shaft, cog belt driving, plunger pump lubrication and compound feed by needle bar,  presser foot and feed dog provides this series with such splendid features as smooth running, quiet working and a long service life. It is also equipped
with a safely clutch to prevent the hooks from damage by over-duty operation. So it is especially available in stitching car seats, safety belts,safety air bags, tents, parachutes,etc.