The separation of the bulgur fractions which was thinned by crushing and grinding machines such as crushing machines, mill, and roller are carried out by a square sieve. The bulgur sieve consist 4 panels. The sieving process is performed by the 15-22 boxes were positioned in the sieve chassis and the sieves in the boxes. Widely sieving zone is created with the stacking of sieves. Thus, a more sensitive sieving probability can be created and also it is possible to design the capacity as regarding to your request. The products can be classified by giving circular motion to the sieve, by the helping of the balance weight where attached to the main shaft of the sieving machine.