In the stone separator machine, grains, legumes, and other similar products fall onto the first layer of the machine, which has a double sifting system. Here, due to ventilation and vibration, the product kernels and heavy unwanted particles are evenly spread across the sifting surface. The sieve used here is divided into 3 equal sections, and classification is performed only at this level. While coarse waste goes to the waste line at the machine’s outlet, particles such as stones, soil, etc., fall into the stone collection section at the product inlet. The product then falls onto the sifting surface at the lower level. At this level, the sieve surface is specially designed, and due to the ventilation-supported sifting method, while the products are directed to the product collection shelter at the outlet, particles like stones and soil fall into the stone collection section at the inlet. Another key factor for efficiency in this machine is the machine's angle adjustment and vibration contour settings.