1 Roll is generally used in four small cylindrical roller bearings, the inner ring and rollers with static, generally installed after the sleeve, the inner ring fitted into, within the circle as the base cylindrical grinding roll, because it can not withstand the axis force, the rolling process in the axial force required to withstand the bearing, generally used in a back to back double row angular contact ball bearings, face to face double row tapered roller bearings, and thrust bearings and four-point angular contact ball bearings, etc. , the domestic manufacturers ZWZ product is better, the mother is willing to foreign manufacturers of iron good American.
2 work roll bearings generally used in four-row tapered roller bearings, because of its structure, the inner ring and rollers to move with, that when re-grinding roller bearings with bearing removed together, can withstand some of its own axis force, so some of the small mill is its axial force to bear its own, and some larger, or high precision mill, generally axial force bearing.
Burning and rolling mill bearing various factors, generally normal, and the typical aluminum foil rolling mill angular contact bearings burning is a worldwide problem, which I think is very important lubrication, oil mist lubrication slightly better point, there bearing installation clearance issues, in addition to baffle and the bearing shaft clearance problems, but also bending load bearing outer cylinder brings problems, and so changes in a number of factors, produced by SKF overseas mill SMS combination with the thrust bearing cone bearings. There bearing outer spring buffer and so on.