In the process of rolling mill, the working characteristic of the bearing is that the inner ring rotates and the outer ring does not move. In order to prolong the service life of the rolling mill bearing, it is necessary to remove the outer component from the seat to the changing load area after the use for a period of time, based on the motion characteristics.
So what exactly should be done? In the process of this operation, in fact, can refer to the installation process of rolling mill bearings, that is, to use a dedicated hydraulic press or the daughter of the top and special tools to crush the bearings or with a copper rod gently knock out the bearings, it must be prohibited to use steel rods to knock out, so as to avoid
Remember, the force of the bearing is not added to the rolling body, Cage, in case of damage. Before disassembly, it is best to present the position of the outer ring load area, and then turn the outer ring over 120 degrees to allow the outer ring to be transferred to the next area to withstand the load. After unloading should be careful to keep clean, no sundries into the mill bearing inside.
In particular, it should be noted that a set of bearing two outer rings should be marked to avoid mixing. Otherwise, it may cause uneven bearing load, but also lead to the phenomenon of deflection of rolling mill, so that the bearing premature failure.
If the inner ring of the bearing has been to the service life, and the roll can be used, it is necessary to remove the inner ring from the roll, by heating 40-60 seconds on the inner ring with a hot-line loop sleeve and then unloading the inner ring. When the mill bearing is removed according to the above steps, the housings and accessories need to be cleaned and measured, the measurement requirements are in accordance with the drawing size, and the parts which do not conform to the drawing size should be repaired or scrapped. This helps to prolong the service life of rolling mill bearings.