What does the organization of grinding wheels refer to

The organization of a grinding wheel refers to the proportional relationship between the volume of the abrasive particles, binder, and pores that make up the grinding wheel. Usually, the classification is based on the percentage of abrasive particles in the volume of the grinding wheel. The grinding wheel has three organizational states: tight, medium, and loose; Divided into 15 levels, ranging from 0 to 14. The smaller the organization number, the larger the proportion of abrasive particles, and the tighter the grinding wheel; On the contrary, the larger the organization number, the smaller the proportion of abrasive particles, and the looser the grinding wheel.