Brief Introduction of Roller Shell Roller shell is one of the main work parts in pellet mill and is applied for processing  various kinds of biomass fuel granule, animal feed pellet and other pellets. It is made of wear resistant alloy steel with carburization heat treatment, featuring even hardness  and long service life. It is divided into tooth through type, tooth no through  type and pass type.  Rolling parts such as inner eccentric shaft are precise in size, facilitating space adjustment by customers between roller and ring die according to production requirement. It is also characterized by ease of mounting and replacing.  Different Patterns Of Roller Shell Roller shell is the surface of roller assembly where raw materials are pressed against the die. It can be used on pellet machine to make various kinds of feed pellets, fuel pellets or other kinds of pellets.   There are many types of roller shell, such as Open Ends Corrugated, Closed Ends Corrugated, Dimpled and oblique shaped roller shell, honeycomb shaped,scallop shaped,fluted shaped etc. Corrugated roller shell and dimpled roller shell are the mostly used types in the livestock and poultry feed pelleting and biomass pelleting industry. Why Need