Date: 2013-08-20

INA bearing the appearance of how to check

When using INA bearings, we must first check the INA bearing the appearance of to determine whether meet the standards we require. Here to share with you that we should check those parts.
Checks should be carried out in a flood of INA bearing, bearing the appearance of careful observation, cracks and other parts.
1, all kinds of mechanical injuries, such as Strip, scratched, bruised, scratches, etc will have poor INA bearing installation, lead to unbalanced load and stress concentration, causing rotation accuracy and use declining life expectancy.
2, rust, dark-skinned and pitting, the latter two are easy to store moisture and dirt defects, most likely to develop into rust. While rust is leading to poor installation, sources of early wear and fatigue, severe corrosion INA bearing scrap.
3, all kinds of cracks, cracks such as raw materials, forging crack, cracks and grinding crack of heat treatment and so on, these crack INA bearings in operation at a later time, becomes a source of stress concentration and the rapid expansion, resulting in rupture of the bearing, great influence on bearing life and job security. In fact, for important uses of bearings, bearing factory on 100% magnetic or radiographic inspection of its constituent parts.
4, from the skin and collapse, both local and loose substrate with metal defects, and often exist to varying degrees around it and decarbonization phenomena of poverty or carbon, materials easy caving, Dent or wear, INA bearing life and accuracy at a disadvantage.
5, cage's riveting or welding quality, main observation on the rivet head deviation, skew, relaxation, lack meat or "double fold ', welding is properly seated, solder is too big or too small, there is any loose weld or solder stuck rolling caused by excessive phenomenon.
Above is our checks focused on checking part of the INA bearing, in addition to other parts of the above checks, such as typing of poor quality, such as illegible, damaged, shall be considered defective and serious persons may refuse acceptance.

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