Bearing noise is an important source of environmental pollution, but also the bearing industry needs to control the important indicators, especially for home appliances, office machinery, instrumentation with angular contact ball bearing noise limit is more prominent. In the past ten years or so, China’s bearing industry has done a lot of work in reducing bearing noise, so that the level of bearing noise reduction has been greatly improved, but compared with foreign countries, there is still a certain gap, the user reflects the prominent “sound” problem, that is, the bearing operation of an irregular sudden sound, or even screaming sound. Bearing noise impact factors are many, but also very complex, need from the overall design of the bearing, each part of the bearing – inner ring, outer ring, cage, rolling body and lubricant (grease) to analyze and study, but also from the angular contact ball bearing each part of the material used, plus-1-212 art process and even engineering equipment, technology Materials and other aspects to analyze and study. This is the basic content of the bearing noise technology involved. Rolling bearing corrosion causes and prevention methods rolling bearing corrosion is caused by a variety of intrinsic and extrinsic factors, summarized mainly. 1, the metal surface finish (oxygen concentration difference cell corrosion). 2, the metal material itself chemical composition and structure. 3, and metal surface contact with the composition of the solution and pH value. 4, the ambient temperature and humidity. 5, and metal surfaces in contact with a variety of environmental media. 6, in addition to human sweat is also the cause of angular contact ball bearing corrosion, its pH value of 5 ~ 6. So in order to prevent hand sweat caused by rust, installation and production personnel should wear gloves, do not casually touch rolling bearings with their hands. Apply anti-rust oil to prevent rolling bearings from rusting 1、Soaking method: Some small rolling bearings are immersed in anti-rust grease, and the thickness of the oil film can be achieved by controlling the temperature or viscosity of the anti-rust grease. Make its surface adhere to a layer of anti-rust grease method. 2、Brush coating method: When brushing, pay attention to evenly coating the surface of rolling bearings, do not produce accumulation, and also pay attention to prevent leakage of coating. 3、Spray method: Some large antirust objects are not suitable for oiling by immersion method. Generally, filtered compressed air with about 0.7Mpa pressure is used for spraying in an air clean place. The spray method is suitable for solvent diluted antirust oil or thin layer antirust oil. This method must use perfect fire and labor protection measures.

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