NTN has developed an alternator long life ball bearing that can be used at 180 ° C

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.


The production line can produce thickness of 1.0-2.0mm thick galvanized sheet, cold rolled sheet. The production line coil uncoiling, leveling, punching, roll forming, length cutting, then we can produce the product that customer want.

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U Bracket Solar Power Stent Manufacturing System

U Bracket Solar Power Stent Manufacturing Series

U Bracket Solar Power Stent Manufacturing System, U Shape Profile Roll Forming Machine, Bracket Solar Roll Forming Machine, Purlin Roll Forming Machine

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