Rolling mill bearing process

The design problem of rolling mill bearings. The burning loss of rolling mill bearings is related to many factors. It is generally normal. The burning loss of angular contact bearings in typical aluminum foil rolling mills is a worldwide problem. I personally think that lubrication is very important, and the effect of oil mist lubrication Slightly better, there is also the problem of bearing installation clearance.
In addition, there are many factors such as the gap between the shaft end baffle and the bearing housing, and the load change of the outer ring of the bearing caused by the bending cylinder, etc. The combination bearings made by SKF for the SMS mill abroad are conical and thrust bearings . There are also bearing outer ring spring buffer and so on.
1. The back-up roll generally adopts four-row cylindrical small roller bearings, and its inner ring is statically matched with the roll. After installing the tapered sleeve, the inner ring is generally installed, and the outer circle of the roll is finely ground with the inner ring as the reference, because it cannot bear the shaft The axial force generated during the rolling process needs to be borne by bearings. Generally, back-to-back double-row angular contact ball bearings, face-to-face double-row tapered roller bearings, thrust bearings and four-point angular contact ball bearings are used. , Domestic manufacturers have better ZWZ products, and foreign manufacturers are better than American iron mothers.
2. The work roll bearings generally use four-row tapered roller bearings. Because of its structure, the inner ring and the roll are in dynamic fit. That is to say, when the roll is reground, the bearing is removed together with the bearing seat, and it can bear a certain shaft. The axial force of some small rolling mills is borne by itself, and some larger or higher precision rolling mills generally use axial force bearings.