The installation process of the main bearing of the ultrafine vertical mill should ensure that the journal and the bearing of the ultrafine vertical mill can run and have good contact performance.

In the process of installation, it is also necessary to ensure that the two hollow shafts have the same axial degree, and the gap between the central shaft and the bearing should be controlled to be between 0.5mm and 1mm, and a certain degree of flexibility should be left on both sides of the free end.

Especially in some areas with large seasonal temperature differences, the shoulder of the hollow shaft and the clearance of the bearing bush are prone to some differences. If the setting is improper, the bearing temperature will be high, and the bearing will be locked.

Therefore, under normal circumstances, when the ultrafine vertical mill is installed in winter, the gap between the outer shoulder of the hollow shaft and the bearing should be smaller than the inner side. Compared with the summer, it is just the opposite.