SKF bearings should be checked under the astigmatism, the bearing appearance, cracks and other parts for careful observation. 1, from the skin and fold: the two defects and the base metal parts of the combination is not strong, and its surrounding are often varying degrees of decarbonization or carbon-poor phenomenon, the material is easy to collapse, depression or wear on the bearing life and precision is very unfavorable. 2, cage riveting or welding quality: the main observation rivet head is skewed, skewed, loose, missing meat or double eyelid, the welding position is correct, the welding point is too large or too small, whether the welding is not strong or excessive welding Caused by rolling phenomenon. These are some of the key checks we check SKF bearings in the part, in addition to the above part of the inspection, the other as typing poor quality, such as handwriting fuzzy, damaged, should be considered defective, serious may not be accepted. 3, rust, black and pitting: The latter two are easy to store moisture and dirt defects, most likely to develop into corrosion. Corrosion, on the other hand, is a source of pollution that can cause poor installation, early wear and fatigue, and serious corrosion that discards the bearings. 4, a variety of mechanical scars: such as abrasion, scratching, crushing, bruising, etc., can cause poor bearing installation, causing partial load and stress concentration, resulting in decreased rotation accuracy and service life. 5, a variety of cracks: such as raw material cracks, forging cracks, heat treatment cracks and grinding cracks, these cracks in the operation of the bearing in the future, will become the source of stress and rapidly expanding, resulting in bearing rupture, the bearing life and work safety Sexual impact is great. In fact, the bearings factory has conducted 100% magnetic or radiographic inspections of its constituent parts for important-purpose bearings.
