Product Appearance Display

Usage Demonstration

1、YS‑4431D Tubular Twin‑Needle Sewing Machine features synchronous feeding by needle, feed dog and presser foot, preventing fabric slippage and producing neat, uniform stitches. It is equipped with a slide‑type thread take‑up, an imported vertical double‑size rotating hook that forms two parallel rows of lock stitches. The upper and lower shafts are driven by synchronous toothed belts; stitch length is adjusted via a knob‑type dial and feed direction is controlled by a lever‑type forward/reverse mechanism, ensuring user‑friendly operation. In addition, a clutch‑type safety device is provided to protect the machine against damage from overload

2、This model can be optionally equipped with an electronic positioning motor. During sewing pauses, the needle can be controlled to always stop either above or below the fabric, eliminating the need for frequent handwheel rotation and making operation more convenient

This product is widely used in the sewing of tents, arches, parachutes, hot air balloons, seat cushions, sofas, and similar products. It is particularly suitable for filter bags and ring‑shaped cylindrical items