Aligning ball bearing failure in the use of reason analysis

According to incomplete statistics, cement fan failure rate of abnormal vibration and up to 58.6% maximum, due to vibration will cause the fan to run unbalanced. Which,  thin section angular contact bearings with adapter sleeve to adjust properly, can cause abnormal bearing temperature and vibration. If a cement plant during equipment maintenance and replacement of the turbine vanes. Vanes on both sides with an adapter sleeve bearings and bearing a fixed match. Re-test the free end of the bearing temperature occurs, the value of high vibration failures. Open housing cap, manual slow rotating fans, found in a particular location shaft bearing roller, roll the situation there in a non-load area, which can determine changes in the high bearing running clearance and the installation space may be insufficient. After measuring that, self-aligning ball single-row crossed roller slewing bearing internal clearance of only 0.04mm, the eccentric shaft up to 0.18mm.
Preferred to correctly grasp the bearing parts in mechanical devices used to select suitable bearing premise. Whom, the following aspects need to obtain data and information:
1, the function and structure of mechanical devices
2, bearing the use of the site
3, bearing load (size, direction)
4, the rotational speed
5, vibration, shock
6, the bearing temperature (ambient temperature, temperature)
7. Select the ambient atmosphere (corrosive, cleaning, lubrication) usually bearing configuration.
bearing shaft is a two-aligning ball bearings in radial and axial be supported at this time, the side of the bearing is called a fixed-side bearing its two kinds of radial and axial loads from the fixed axis and effect relative axial displacement between the bearing housing. The other side is called the free side, only radial loads, axial relative movement, in order to solve the problem and retractable portion angular contact ball bearing installation interval error due to temperature changes resulting from the axis. For fixed-side bearing, the rolling bearing need to select an available surface in the axial direction to the mounting surface to move or moves. In a relatively short shaft, and the free-side fixed-side little other cases, the use of only one-way axial movement of the fixed bearing. Select the type of the selected bearing bearing type, self-aligning ball bearings to fully grasp the conditions of use are essential.