Ultra Fine Mill is rugged, high capacity, low maintenance, economical unit designed to grind soft to medium hard to hard material in fineness up to 500 mesh BSS and even more depending upon various characteristics of the material. The feeder screw convey the hopper feed material to grinding chamber and work as a crusher for reducing soft lumps of material to admissible feed size. Reduction gear unit operate feeder screw at varible speed for uniform flow of material; for better fineness. The material is grinding between serreted conical/flat liners and hardened high speed steel aquare/rectangular type tips. Fine powder undergoes strick fineness inspection throgh gap plate to balanced impeller provided inside the body of the mill to bottom outlet. Water cooling arrangement is provided around the grinding chamber to cool the grinding area of the machine.