During pellet production, a customer discovered that the pellet mill's roller stopped rotating and became overheated. After inspection by after-sales engineers, they discovered that the cause was damage to the pellet mill's roller bearing. Many people are unclear about when the roller shell broke down, and what exactly causes the roller bearing to break down.

Install the blocked ring die on the machine, mix 100-200kg pellet (diameter of the pellet should be same as ring die hole diameter. For example, 2mm die uses 2mm pellet) with 3-5% water and 4%-5% oil evenly. Flush the hole channel for 10-20 minutes. After all blocked channels are cleaned, we can start normal production.

Take the pellets just produced (the crushed size of the raw material, and the hole diameter of the hammer mill screen should not be larger than the hole channel diameter of the pellet dies to be washed). The amount of pellet depends on the size of the pellet die, such as, inner diameter is no bigger than 558mm, which needs around 50kg~100kg of pellets. The moisture content is best when the pellet

​When installing roller shell, you should check whether the work surface of roller and ring die is in suitable position. The machine can’t work under the condition that roller shell touches the ring die feed channel, or it will casue damage of the ring die and roller shell.

​Gap between ring die and roller shell: ensuring the ring die working face can rotate the roller shell fitfully will be OK. Theoretical data is about 0.1-0.3mm, not too tight. ​Safety bin must work to ensure the pellet machine safety. It will be broken if any briquette or strange matter enter the ring die.