In order to ensure the normal operation of the roller bearings, the following points need to be done in daily maintenance:If the oil pressure is too high, the oil level in the vertical roller mill will rise, and the oil quantity will be too high, which will easily cause the vertical roller mill to leak oil and even damage the oil seal; if the oil pressure is too low, the oil quantity in the vertical roller mill will be low or lacking, and insufficient lubrication will easily damage the vertical roller mill bearings. . Generally, the adjustment range of vacuum is between -0.10 and -0.35bar.The vacuum degree of the oil return pipe of the vertical roller mill determines the oil level in the vertical roller mill cavity. In order to keep the oil level in the vertical roller mill relatively stable, the adjustment of the vacuum degree and pressure must be cautious. It is directly related to the lubrication state of the vertical roller mill bearings.