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precision ball bearing - China Manufacturer
Thank you for inquiry my precision ball bearing, Tel : 0086-0379-64390888, E-mail: liuping@lyzyc.cc
http://www.lyzycbearing.com/key-precision-ball-bearings-8/
The check bearing should astigmatism lamp bearing the appearance of cracks and other parts of careful observation.ball roller bearing
1, peeling and folding:
Local defects and 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, indentation or wear very detrimental to bearing life and accuracy.
2, the cage of the caulking or welding quality:
MAIN OUTCOME rivet head deviation, skew, relaxation, lack of meat or double eyelids correct position welding solder is too large or too small, whether welding is not strong or welding caused by excessive stuck phenomenon of rolling elements. Above items is part of our focus on checking the check SKF bearings, 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.
3, 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 po or installation, the source of contamination of early wear and fatigue, severe corrosion causes the bearing scrap.bearing manufacturer
4, various mechanical wounds:
Such as galling, scratched, bruised, bumps are caused by bad bearing mounting, causing partial load and stress concentration, resulting in a decline in rotation accuracy and service life.
5, various cracks:
Such as raw materials crack, crack forging, heat treatment cracks, grinding cracks, these cracks after bearing during operation, will become a source of stress concentration and rapidly expanding, causing the bearing rupture, a great impact on bearing life and work security. In fact, for the important purpose of bearing, bearing factory has its component parts and 100% magnetic ray detection checks.abec 9 bearings
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