Typically, the shaft is carried by two bearings in the radial and axial support, At this time, the side of the SKF Bearings called fixed-side bearings, both radial and axial load, since the fixed shaft and the bearing housing the role of the relative axial displacement. The other side as the liberal side, only radial loads, axial relative movement, in order to resolve due to temperature changes telescopic title and installation of the shaft bearing interval error.
For fixed side bearing, the need to select the available rolling surface in the axial movement (such as cylindrical roller bearings) or move to the mounting surface (such as SKF bearing radial ball bearings). In a relatively short shaft, the fixed-side and the free side Found other cases, the use of only unidirectional the fixed axially movable bearing (such as the radial thrust ball bearings).
Test results, if bearing damage and anomalies identified in accordance with the phenomenon of the SKF bearing damage causes, and to develop countermeasures. In addition, test results, if the following defects, the bearing can not be reused, the need to replace the bearings.
a. inner and outer rings, rolling cage which any cracks and debris.
b. inner and outer rings, rolling the any one peeling.
C raceway, wall, rolling significantly cards injury.
d keep the the the frame badly worn or loose rivet powerful.
e. raceway, rolling rust and injuries.
f rolling surface, rolling a significant indentation and hit marks.
g Inner diameter surface or outer diameter creep.
h overheating severe discoloration.
i grease sealed SKF bearings, seals and dust cover damage to serious.
Raceway sound originated by the natural vibration of the load ferrule. As the rings and rolling elements elastic contact a nonlinear vibration system. Will stimulate the natural vibration and flexible characteristics When lubrication or processing accuracy is not high when delivered to the air becomes noise. As we all know, even with a contemporary highest manufacturing technology and processing SKF bearing parts, small geometric errors of the work surface there will always be varying degrees, so that the tiny fluctuations between the raceway and the rolling elements to stimulate the natural vibration of the vibration system.