Environmental conditions on the imports of koyo bearing installation accuracy analysis

Environmental temperature directly affect the grease. Say commonly, when use temperature is lower than 60 ℃, bearing oxidation reaction is not obvious; However, more than 60 ℃, 10 ℃ per improve, oxidation rate has doubled, the life of the lubricating oil can also be halved. Koyo bearing lubrication part to reduce the temperature or the lubrication oil in the lubricating system, can consider to install the cooler or heat sink, in order to prolong the service life of lubricating oil. The humidity in the atmosphere also have certain influence to choose lubricating oil. Imported bearing under the condition of high humidity in the atmosphere, easy cause mechanical parts metal surface rust, should choose rust preventive oil. When the atmosphere with high salinity, should choose has rust resistance of lubricating oil to the water. 1, all kinds of machinery, such as abrasion, cut and bruised, crushed, can cause adverse bearing installation, causing partial load and stress concentration, caused by rotation precision and service life. 2, rust, black and pitting, the latter two are easy to store water and dirt of defects, most likely to develop into rust. The corrosion is caused pollution sources, the installation of non-performing, early wear and fatigue of severe corrosion causes koyo bearing damaged. 3, all kinds of crack, crack, such as raw materials, forging, heat treatment of crack crack and grinding cracks, the crack in the process of bearing after operation, will become a source of stress concentration and expanded rapidly, causing bearing is broken, and great influence on imported bearing life and job security. In fact, for important USES of koyo bearings, bearing factory has been to 100% of their component parts magnetic or radiographic inspection. 4, peeling and folding, the two defects of local combined with matrix metal not firm, and its surroundings often exist in different degrees decarburization or poor phenomenon, carbon material easy caving, the indented or wear, bearing life and accuracy very unfavorable. Fixed end koyo bearings on the shaft before installation: will the kerosene used to clean the bearing with clean thoroughly clean, for grease lubrication, to contain 3% ~ 5% of organic solvent injection bearing grease for degreasing, cleaning and quantitative grease oil gun will fill in the bearing inner; Heat bearing the heat up 20 ~ 30 ℃, using hydraulic press will import bearing load shaft end; Will set casing pressure on the shaft and with appropriate pressure against koyo bearing face makes its axial positioning; The lace will spring balance volume on the bearing outer ring, use the method of measuring start torque calibration of pre-loaded whether there is a substantial change.