Bearings are essential components of wind turbines. Wind turbine bearings range from bearings used in blades, spindles and yaw, to high speed bearings used in gearboxes and generators. In general, wind turbine bearings include yaw bearings, pitch bearings, spindle bearings, gearbox bearings and generator bearings.


Among them, the yaw bearing generally use single-row four-point contact ball slewing bearings, double row four-point contact ball slewing bearings and cross cylindrical roller slew ring bearings; pitch bearings generally use double row four-point contact ball slewing bearings, Spindle bearings generally use spherical roller bearings, cylindrical roller bearings, double row tapered roller bearings, single row tapered roller bearings, etc .; spindle bearings are generally used spherical roller bearings, cylindrical roller bearings, double row tapered roller bearings, single row tapered roller bearings, The gearbox bearings are generally used of cylindrical roller bearings, single row tapered roller bearings, spherical roller bearings, single row deep groove ball bearings, double row tapered roller bearings, etc .; generator bearings generally use cylindrical roller bearings, deep groove ball Bearings and so on.


Because of the harsh conditions of wind power equipments and the long life and high reliability requirements, making the wind turbine bearing has a high technical complexity, is recognized as the most difficult of the two major parts (bearing and control system) one.


After years of development, China's wind turbine bearing industry has gradually formed a large-scale, series of production, industrial scale has been expanding, key technology breakthroughs, leading enterprises continue to emerge.


In China, the bearing industry in high-end product demand is mainly concentrated in the automotive, wind power, railways, metallurgy, machine tools and other fields. According to China Machinery Industry Federation statistics, China's wind power bearing industry has been expanding, according 2017 China's wind power bearing industry, the main business income reached 20.3 billion yuan.


Luoyang huigong bearing company has now built the world's largest bearing varieties, the largest production scale, supporting the most complete unit, the largest power generation wind power bearing production base, has developed a series of 1.5MW, 2.0MW, 3.0MW, 5.0MW, 6.0MW fan supporting Bearing, a comprehensive grasp of the wind power supporting the development of bearing technology, and ranks of the world's advanced level.