The Jack F4 is a single needle sewing machine that provides fast, smooth, precise sewing operations for a variety of sewing applications. The coaxial shaft driven by the integrated direct drive motor produces less vibration and noise creating the perfect seems at any speed.

Enlarge the sewing range,suitable for various of fabrics like jeans and yarn. Reduce energy loss， make the machine running fast, stable and durable. Equipped with 3 level shinning LED light,offer omnibearing brightness,make it more convenient for threading and reduce visual fatigue.

Optimization for the system of thread take-up mechanisms to adjust the thread picking at different time.make sewing stitch more perfect. Only adjust tension devices is enough. Fully enclosed needle bar oil return device, blocking oil pollution,Clean and durable. Improve customer satisfaction.