The bearing look how checks

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Bearings in the use of time, we must first check the appearance of the bearing, the judgment is not in line with the standards we require. Following one to share with everyone that we should check those parts. double roller bearing
The check bearing should astigmatism lamp bearing the appearance of cracks and other parts of careful observation.
1, various mechanical injuries, such as rubs, scratches, bruised, bumps, etc., can cause adverse bearing installation, causing partial load and stress concentration caused by the decline in rotation accuracy and service life.
2, rust, black and pitting, the latter two are easy to store moisture and dirt defects, most likely to develop into rust. While corrosion leading to poor installation, the source of contamination of early wear and fatigue, severe corrosion causes the bearing scrap.
3, various cracks, cracks such as raw materials, forging crack, heat treatment cracks and grinding cracks, these cracks will become the source of stress concentration in the bearing during operation of the later, and rapidly expanding, causing bearing broken, the bearing life, and safety at work great impact. In fact, for the important purpose of bearing, bearing factory has its component parts and 100% magnetic ray detection checks. roller ball bearings
4, from the skin and folding defects local base metal combined with unsound, and its surrounding often exist to varying degrees of decarburization or depleted carbon phenomenon, the materials are easy to caving, debossing or wear of the bearing life and accuracy is disadvantage.
5 riveting or welding quality of the cage, to mainly observe whether the rivet head deviation, skew, relaxation, lack of meat or "double eyelid correct position welding, solder joint is too large or too small, whether welding is not strong or welding caused by excessive stuck rolling body phenomenon.
Above items is part of our focus in check bearing check, in addition to the part of the above checks, the other poor quality such as typing, such as illegible , damaged, defective should be considered more seriously, no acceptance.