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Double Needle Lockstitch Sewing Machine This machine adopts two straight needles, vertical-axis rotating hook with self- lubricating features for catching thread loops and sliding camtake-up to produce two lines of double lockstitch. The needle bar can be engaged and disengaged mechanically and the arm shaft and hook shaft are supported by ball bearings. It is provided with synshro tooth belt for driving plunger pump for lubricating, knob- type stitch regulator ans level type reverse feeding mechanism. Abobbin thread pullback spring in the bobbin case guarantees the accordance or needle thread and bobbin thread. Besides it features synchronized feeding or needl bar and feed dog. It is recommenged for stitching overalls uniforms, jeans and decorative sewing on bags.
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