Pellet mills are crucial machines in the feed and biomass industries, primarily used for the production of pellets. These pellets, made from a variety of raw materials like sawdust, agricultural residues, or animal feed, are compact, easy to transport, and have a high energy density. Among the key components of a pellet mill, the roller plays a pivotal role in the pelletization process. This article delves into the significance of the pellet mill roller, its functionality, and the factors affecting its performance.