Under the action of long-term impact torque, the material inside the shaft will gradually produce fatigue. When the fatigue limit is reached, it will produce fracture. In addition, there are great differences in torsional strength of different materials. If the material is poor, it will inevitably lead to low flexural strength and fatigue limit, and it is easy to damage.  It is suggested that when purchasing barite ore mill, regular manufacturers must be selected to ensure reasonable material selection of various components.  At the same time, it is strictly prohibited to start the barite ore mill with materials to ensure that the barite ore mill can only be started without materials; Strengthen daily maintenance and inspection, and check the shaft regularly.  Once bending and deformation are found, it must be replaced in time to avoid damage in the transmission process.