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What is the general inspection method of bearings?
2023-05-31
1, a variety of mechanical scars, such as abrasions, scratches, indentations, bruises, etc., can cause poor bearing installation, causing bias load and stress concentration, resulting in a decline in rotational accuracy and service life.
2, rust, black skin and pitting, the latter two are easy to store moisture and dirt defects, it is easy to develop into rust. And rust is the source of pollution that leads to poor installation, early wear and fatigue, serious rust will make the bearing scrap.
3, a variety of cracks, such as raw material cracks, forging cracks, heat treatment cracks and grinding cracks, etc., these cracks in the later bearing operation process, will become a source of stress concentration and rapid expansion, resulting in bearing rupture, bearing life and work safety is greatly affected. In fact, for the important use of bearings, bearing factory has been the composition of its parts for magnetic or radiographic flaw inspection.
4, skinning and folding, the two defects of the local and base metal bonding is not firm, and its surrounding often varying degrees of decarburization or poor carbon phenomenon, the material is easy to collapse, pressure concave or wear, bearing life and accuracy is very unfavorable.
5, the riveting or welding quality of the cage, the main observation is whether the rivet head offset, skewed, slack, lack of meat or "double-eye", welding position is correct, welding point is too large or too small, whether the welding is not firm or excessive welding caused by the phenomenon of stuck rolling body.
The above items are the parts we check in the inspection of imported bearings, in addition to the above parts of the inspection, such as typing quality is not good, such as fuzzy handwriting, damage, should be considered inferior, serious cases can also be rejected.
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06-14
The following points should be noted to ensure that the bearings can work reliably
From the use point of view, to ensure that the bearings can work reliably should pay attention to the following points:
06-14
Depending on the operating conditions of the bearings and the requirements of the working environment on the degree of sealing, the engineering design is often a combination of various forms of seals to achieve a better sealing effect. The selection of additional seals for bearings should consider the following main factors:
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The importance of sealing of spherical roller bearings
The sealing of the bearings is to make the spherical roller bearings to maintain good lubrication conditions and normal working environment, give full play to the working performance of the bearings and prolong the service life, the rolling bearings shall have a suitable seal to prevent the leakage of lubricant and the intrusion of dust, moisture or other dirt.
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