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How to look at the appearance of SKF bearings

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In the application of SKF bearings; we must first look at the appearance of imported bearings; to determine whether it meets the specifications we need. Let's share with us. We should look at some of them. SKF bearings should be viewed under astigmatism; Careful investigation of the surface, cracks and other parts of the bearing.
1, all kinds of mechanical scars; such as abrasions; scratches, crushes, bumps, etc.; will form a bearing device; will cause eccentric load and stress gathering; the formation of rotation accuracy and the reduction of the number of life.
2, rust, black skin and pitting; the latter two are the shortcomings of simple storage of water and dirt; the simplest to carry out rust. And rust is the source of pollution, causing poor wear, early wear and fatigue; severe corrosion will cause bearings Obsolete.
3, various cracks; such as the original data crack; casting cracks, heat treatment cracks and grinding cracks; these cracks in the future bearing operation; will become the source of stress gathering and agile expansion; the formation of bearing break; bearing life And the safety of the work has a great impact. In fact; the bearings for important uses; the bearing factory has 100% magnetic or radiographic inspection of its components.
4, peeling and folding; some of these two shortcomings are not well connected to the base metal; and there are often different degrees of decarburization or carbon-poor appearance; the data simply collapse, underdentation or wear; bearing life and The accuracy is very arrogant.
5, the quality of the riveting or welding of the cage; the first investigation of whether the rivet head can be biased, tilted, slack, lack of meat or "double eyelids"; the orientation of the welding can be correct; the welding point is too large.焕 蚝 蚝 蚝 蚝 鹂ㄗ 龆逑窒 龆逑窒 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上 以上Defective; severe can also not be tested.

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