Conversely, if the gap is too small, the pressure roller directly contacts the die, causing mechanical wear that severely impacts its lifespan. The die guide opening can deform due to mechanical wear of the pressure roller shell, making feeding into the die orifice difficult, gradually reducing pelleting output, and eventually leading to pelleting difficulties or even shutdown. So, what is the appropriate gap between the pellet mill pressure roller and die? Normally, the gap between the pressure roller and the die should be adjusted so that when the die is rotated manually, 1/4 of the working surface can drive the roller shell to rotate or drive it intermittently. Only such a gap can meet the pelleting requirements. In other words, the best state is when the pressure roller and the die are almost touching but not touching, and almost rotating but not rotating.
If you want to know more about our pellet machine, welcome to subscribe to our YouTube channel.