In a Raymond Mill grinding progress, the grinding is mainly take place in the grinding roller and grinding ring. Due to the power of centrifugation, grinding roller swing and pressure the grinding ring. When the raw material is carried by blade to the middle of grinding roller and ring, the grinding occurs.
By using durable material, the wear of grinding roller and ring can be reduced, but not inevitable. So when the wear comes to a certain extent, it must cause a bad influence on output size directly and capacity indirectly. When the wear takes place, the distance between the grinding mill and grinding ring will be amplified. And then output size will be large. To maintain the same output size, the capacity should decrease.