Special Spherical Roller Bearings in Polysius QM Vertical …
Polysius AG in the development of large vertical roller mills of the "QM = Quadropol" series. These mills are mainly used for grinding the raw material for cement production. Since its trial in the year 2000, the QUADROPOL mill type has proved to be clearly more cost efficient than the "RM" roller mills. Even the first mill of this type has