As a large industrial equipment, the vertical roller mill is generally arranged in the open air, continuous operation for a long time, and some parts will have different degrees of wear. In order to ensure the normal operation of the equipment, the maintenance of some key components is very important. Important parts such as rocker arm, grinding roller, grinding disc, powder separator device should be regularly maintained, maintained and replaced to avoid affecting the daily operation of vertical mill due to its damage.

Grinding roller is an important part of vertical roller mill grinding, mainly composed of wheel hub, roller shaft, bearing, oil pipe, roller sleeve and so on. In the operation process of vertical roller mill, when the material is in the grinding table, the large material is directly crushed, and the fine material is extruded to form a material bed for intergranular crushing.

Because the grinding roller can directly exert force on the material, the hardness and wear resistance of the contact area between the grinding roller and the material are relatively high in the design process, and special attention needs to be paid to daily maintenance during the grinding process. After the vertical roller mill runs normally for a period of time, it is necessary to surfacing the outer surface of the grinding roller. When the equipment is used for a long time, it is necessary to check whether the oil seal of the grinding roller bearing is intact in time to avoid oil leakage.