Dynamic bearings appearance inspection

Web Design And Seo For www.china-webdesign.com

roller bearing company - China Manufacturer

Thank you for inquiry my roller bearing company, Tel: 0379-64331653, E-mail: info@lyvsg.com

http://www.lyvsg.com/key-the-roller-bearing-company-32/

The appearance of the rolling bearing in astigmatism under the lamp check, from visual check project related to the accuracy of the most bearing, the use of performance and life expectancy, so when the examination to be carefully, do not think this is not important.
The appearance of the focus of attention of inspection is the following:
(1) all sorts of crack, such as raw material crack, forging crack, heat treatment cracks and grinding crack, etc, these cracks in the process of operation after bearing, will become a source of stress concentration and expanded rapidly, causing the bearing is broken, and to bearing life and safety in work great impact. In fact, for important use of bearing, bearing plant about their constituent parts has 100% magnetic or radiographic examination.
(2) all kinds of mechanical scars, such as abrasion and scratches, crushed, touch injury etc, can create bearing bad installation, cause partial load and stress concentration, cause rotating precision and the service life of decline.double roller bearing
(3) the rust, black and hemp dot, the latter two are easy to store water and dirt, the defects of the most easy to develop into rust. And corrosion is lead to bad installation, early wear and fatigue pollution, serious corrosion will make bearing damaged.
(4) peeling and fold, the two defects of local and matrix with metal not firm, and its surrounding often exist to varying degrees decarburization or the poor carbon phenomenon, material is easily caving, pressure concave or abrasion, to bearing life and precision is very bad.thin ball bearings
(5) maintains a joint or welding quality, main observation rivets head for deviation, whether askew, relaxation, lack of meat or "double-fold eyelid, the position of the welding if it is right or wrong, or is too small, too much solder joints for welding rickety or welding roller phenomenon caused by excessive stuck, some maintains a slope, the pressure to re ceive an edge, gathered seam and whether the quality guarantee cut mouth, whether roller can not fall out maintains a and can turn freely, these points such as not requirements, small would cause noise and rotation precision bearings reduce, big will probably be maintains a apart, cause mechanical failure or accident.
More from (1) to (5) when the examination such as found in the article, the bearing the same will not be testified. Another example is typing quality not beautiful, such as illegible, damage, should think defective goods, serious also may not be acceptance. Moreover bearing assembly shall not have visible surface provisions of burns (annealing mark).big ball bearing