Vertical roller mill is different from other structures, and it has the function of automatically adjusting the coaxiality of hollow shaft and bearing bush. Generally speaking, after the assembly of the spherical seat and the spherical tile, the continuous and uniform distribution of contact spots should be ensured and the spacing should be set reasonably and properly.

If the contact between the back of the vertical roller mill and the bearing seat is not very good, it will directly lead to the contact between the bearing surface and the hollow journal in a small area, the static load variable is large, and the local high temperature condition will occur on the edge of the bearing pad foundation.

At this time, the outer surface of the vertical roller mill should be polished and scraped repeatedly during the installation process. This is to ensure the surface of the outer sphere is smooth and not rough, and it can also play a flexible rotation role in the concave sphere of the base, and then effectively play the role of automatic centering, so as to ensure the tight and reasonable connection between the spherical tile and the spherical base.