Lower looper for industrial overlock machine

The lower looper is a crucial spare part in industrial overlock machines. Its primary function is to capture and form the lower thread loop of the stitch. This part operates at the bottom of the sewing surface and is necessary to create a balanced and tight overlock stitch with 3, 4, or 5 threads. Replacing it is essential if it is bent, broken, or worn out, which leads to skipped stitches. Properties and features: Formation of the lower thread loop: Designed to catch the needle thread and pass it precisely under the fabric to form the lower loop of the stitch. High industrial quality: Made of high-hardness steel and treated to ensure maximum resistance to continuous working pressure. Improved stitch reliability: Its precise shape and size ensure consistency in stitch formation and prevent skipping or looping. The lower looper needle is extremely sensitive. Its installation and replacement require precise adjustment of the machine timing and perfect alignment with the upper looper needle to prevent collisions and skipped stitches. Compatible with: Machines 700, 737, 747, 757.