The bearing noise is an important source of pollution of the environment, an important indicator of the need to control the bearing industry, in particular, is more prominent for home appliances, office machinery, instrumentation, angular contact ball bearing noise limits.
Over the past decade, China's bearing industry has done a lot in reducing bearing noise, bearing noise level has greatly improved, but compared with foreign countries, there is still a certain gap, users reflect the "different tone" bearing operation an irregular sudden sound, or even scream. Bearing noise impact factors is very complex, from the overall design of the bearing, bearing parts - the inner ring, outer ring, cage, rolling and lubricants (grease) analysis, but also from the angular contact ball bearings each part of the materials used, plus the -1-212 arts process as well as engineering equipment, craft materials, to analyze the research. This is the basic content of the bearing noise involved.
Rolling bearing corrosion causes and prevention of rolling bearing corrosion is caused by a variety of intrinsic and extrinsic factors, summarized in:
1, metal surface finish (the difference of oxygen concentration cell corrosion).
2, the metal material chemical composition and structure.
3, the solution in contact with the metal surface composition and pH
value;
4, the ambient temperature and humidity.
5, with the metal surface in contact with the various environmental media.
6, another person's sweat is caused by corrosion of angular contact ball bearings, and its pH 5 to 6. Therefore, in order to prevent hand sweat caused by corrosion, installation and production personnel should wear gloves, do not just hand contact with Rolling.
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