Ultrafine grinder with belt tensioning device is used for grinding of the guar gum flacks and grains. Ultra-fine grinder is fabricated from heavy duty steel plate and is fitted with liner with easy removal system. Ultrafine Micronizer or also called as Ultrafine Grinder is provided with dampener at inlet and high alloyed steel beater. Ultrafine with belt tensioning device has a statistically and dynamically balanced rotor that is supported vertically with the help of two numbers of heavy duty bearing housings with self aligning bearing. Salient features of Ultrafine Micronizer Machine: Fabricated from heavy duty steel plates. Robust in construction. Rotor is statistically and dynamically balanced. Bottom and top part of the rotor is fitted with impeller to suck the material. Provided with dampener at inlet. Fitted with belt tensioning device. High alloyed steel beater & liner. Less maintenance and less noise. Used for grinding of the guar gum flacks and grains.