Four rows of cylindrical roller bearings and six rows of cylindrical roller bearings are almost all used in the roll neck, roller, and rolling machine of the steel rolling frame. These bearings have low friction compared with other roller bearings. Because these bearings are usually mounted on the roll neck with interference fit, they are particularly suitable for rolling mill applications with high rolling speed. The low cross-section of these bearings allows the use of a relatively large roll neck diameter compared to the roll diameter. Due to a large number of rollers, the radial load capacity is very high.

Therefore, these bearings are installed together with deep groove ball bearings or angular contact ball bearings, or tapered roller bearings of radial or thrust design, which are arranged to provide axial load borne by the latter. Four-row and six-row tapered roller bearings are of a separate design, that is, the bearing rings with integral flanges and the roller and cage assembly may be mounted separately from the separate bearing rings, or all bearing parts may be mounted separately.

This simplifies bearing installation, maintenance, and inspection to a considerable extent. The bearing can withstand a certain limit of axial displacement of the shaft relative to the bearing seat. Four rows of cylindrical roller bearings Zhan Lou bearing with a cylindrical hole, some sizes of bearings can also be supplied with tapered hole. Bearings with tapered holes can be adjusted during installation to obtain a certain radial internal clearance or to determine preload.

Rolling mill bearing process flow

The burning loss of the Angle contact bearing of a typical aluminum foil mill is a worldwide problem. Personally, I think lubrication is very important, and the lubrication effect of oil mist is a little 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 seat, the load change of the bearing outer ring caused by the bending roller cylinder, etc., and the conical bearing and thrust combination bearing made by SKF in foreign West Marker mill. There are bearing outer ring spring buffer and so on.

1, the backup roll generally choose small four-row cylindrical roller bearings, which circles with the roll are static, generally installed after the taper sleeve, the inner ring is installed inside, outside the circle as a benchmark fine grinding roll within the circle, because it can't bear axial force, the axial force is created that needs to be in the process of rolling bearing to bear, generally choose a back-to-back double row angular contact ball bearing, double row taper roller bearings, face to face as well as thrust bearings and four Angle contact ball bearings, domestic manufacturers tile products are better, foreign manufacturers American iron mother Ken is better.

2, work roll bearings generally choose four-row circular cone roller bearings, because of its structure, its ring, and roll as movable fit, that is to say, roll resharpening, bearing, together with the bearing seat down, it can absorb a certain amount of axial force, so some of the small mills under the axial force was itself, and some of the larger, or high precision rolling mills, Generally, the axial bearing is also used.