General classification of bearing

1. Energy domain China's large power equipment such as generator, main steam turbine manufacturers such as dongfang set solid, test standard of the electric group and Shanghai electric group and other large makers, power generation equipment every year, billions of yuan of industrial scale, water and electricity group of countries in large burden on the thrust bearing has reached a higher level, but in the thermal power and nuclear power and other high-speed heavy duty product group, there is still a large gap of bearing products in China and abroad, high-end bearing in large scale dependent on foreign technology, I belong to gauge generator bearing technology is relatively mature, and mostly realized localization, but in the material aspect of the bearing in the prominent problems, such as large burden of babbitt vice warm, nuclear main water lubricated bearing materials such as oxygen in large capacity turbine bearings in still have great difficulty: the rotor bearing system and in-depth theoretical and experimental research. In nuclear power generating unit, the nuclear main pump bearing almost entirely by the United States, laws, countries such as Russia's control, the technology is completely broken in the core of the nuclear main manufacturing technology in our country a few flat is blank, there is no engineering application results, the current domestic fossil compared with imported silicide graphite material physical and mechanical properties vary widely, and the quality is not stable. Domestic three generation of electricity using the latest EFR technology level of the capacity of 1750 mw nuclear power half speed generator rotor bearing adopts AISTOM skill, have independent intellectual property rights, can only be processed according to drawing. Anyhow, power generation industry large energy equipment required sliding bearing has shaped into industry, conventional unit bearing manufacture degree is higher, but the million kilowatts units of the bearing still need the item 2. Ship ship brought the city of our country with the bearing level and its development capacity lags far behind Japan, South Korea, etc. Form a complete set of machine oil sliding test after sliding bearing research and development, the service life of the domestic products tend to only 1/3 ~ 1/2 of similar foreign products, low-speed diesel engine market by MANB&W, Wartsila New Sulzer and Japan's mitsubishi heavy industries monopoly. At the same time, large diameter, high speed, 500 10000 /分钟) Marine gas turbine caused by bearing design problems need to solve. In addition, in the boat on the water lubricated bearing professional manufacturers in the production capability of America's only real Johnson Duramax Marine, Michigan Wheel BTR Marine Britain and the Netherlands Maprom Engineering one of the few companies such as BV; Number of water lubricated bearing production professional manufacturers in China are less, mainly include chongqing pentium technology development co. , LTD. , China shipbuilding industry group 71, etc. ; In recent years, jiang gradually emerged in succession a few private small enterprises engaged in the production of bearing products. At present, in the ship shaft water lubricated bearing, with large length to diameter ratio ( 211 - 411) Bearing overload, partial load, touch the ground, noise and other issues still remain to be resolved, 3. Aerospace brought war aerospace bearings of the research in China is mainly led by country, research institutes and enterprises to carry out cooperative research, aircraft such as the machine and bearing parts need to import, such as part of the missile and space bearing such as liquid rocket engine is completely independent research current aerospace bearings is given priority to with play dynamic bearing, sliding bearing of dynamic and static pressure in rocket engine turbopump as an important development direction in abroad popular attention, with industry application prospect, the development of our department has not corresponding political, military and civil aviation aircraft environmental control system of high speed air turbine, artificial satellites and cosmic shuttle spacecraft love move the machine into a turbine engine, now almost all adopt the gas bearing, wind tunnel with a pilot scale gas bearing, the classical gas dynamics experiment improve accuracy, for all types of aircraft, missiles and aircraft aerodynamic performance study provides insurable minister so, along with the development of the defense industry, applied to high-end sliding bearing in the field of aerospace technology for the night is important