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At present, the domestic development and production of the fan bearings transmission bearing and motor bearings, but the performance and life-wide fashion. Therefore, about 90% of the transmission bearings and motor bearings are still dependent on imports. The yaw bearing assembly and the fan blade spindle bearing assembly is also developing the domestic Apart from a small amount of trial Luo axis, ZWZ large state-owned enterprises, there are few manufacturers, the basic case of domestic blank.ball roller bearing
The fan bearings developed, the main technical difficulties seal structure and the grease is needed to achieve long-life, a special raceway methods of processing and heat treatment technology, special cage design and manufacturing methods. Compared to the technical level of domestic and foreign advanced level there is a larger gap, but in recent years some of our research units in these areas have made some breakthrough research, this fan bearings localization process must be accelerated.steel ball bearing
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