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NTN has developed sealed deep-channel ball bearings for alternators that can be used at 180 °C. By adjusting the base oil, additives, and the like of the enclosed lubricant, the heat treatment of the bearing track wheel is improved, and the falling of the rotating surface caused by heat resistance and hydrogen embrittlement is prevented. The service life before falling off is more than twice that of current products. Materials with stable physical properties at high temperatures are also used for seals and retainers.
As the stability and safety are improved, the electrification of the in-vehicle application is underway, and the amount of power generated by the alternator will increase. Therefore, it is expected that the temperature of the alternator bearing in the future will rise from the current 150 ° C to about 180 ° C. The company believes that it is necessary to develop bearings that can maintain long life at high temperatures without the shedding phenomenon common in alternator bearings.
As the stability and safety are improved, the electrification of the in-vehicle application is underway, and the amount of power generated by the alternator will increase. Therefore, it is expected that the temperature of the alternator bearing in the future will rise from the current 150 ° C to about 180 ° C. The company believes that it is necessary to develop bearings that can maintain long life at high temperatures without the shedding phenomenon common in alternator bearings.
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Jiangyin Xinda Medicine and Chemical Machinery Co.,Ltd , https://www.xinda-china.com