Vertical roller mill, also known as vertical mill, is a collection of crushing, grinding, drying, powder selection, conveying in one of the grinding mining machinery and equipment, with high production efficiency, energy saving and environmental protection, material drying ability, product quality stability and other advantages, has been widely used in building materials, electric power, metallurgy, chemical, non-metal mining and other industries.

The rocker arm is an important part of the vertical roller mill, its role is to transfer the pressure of the hydraulic cylinder to the grinding roller, so that it is transformed into the pressure of the grinding roll on the material bed, and its quality is directly related to the running state and production efficiency of the whole machine. Therefore, in the selection of vertical roller mill, rocker arm quality is also an important indicator.

Vertical roller mill upper and lower rocker arm processing material is usually: ZG270-500, under normal circumstances do not need to be replaced, but the upper and lower rocker arm connection cone pin, cone sleeve, dish spring and other parts for the wearing parts, in the regular inspection period, the need to timely disassemble or replace these parts.