High-performance ceramic ball hybrid bearings will be more widely used in wind turbines
2022-08-18
Many companies that started to develop wind turbines have recently begun to realize the advantages of high-performance ceramic ball hybrid bearings, especially the use of ceramic ball hybrid bearings can increase the speed of the rotor shaft of the wind turbine blade from 30rpm to 2000rpm to generate more electrical energy. Silicon nitride balls are ideal for improving bearing performance. Compared to steel balls, silicon nitride balls are lighter, more rigid, harder, smoother, resistant to corrosion, require less lubrication, and have a lower coefficient of thermal expansion. These properties enable bearings to run faster, operate at higher temperatures, and reduce lubrication maintenance. Silicon nitride balls are extremely wear-resistant. The longer bearing life means that the replacement cycle of the wind power plant is greatly extended, and the replacement cost is greatly reduced (due to the need to use lifting equipment when replacing the bearing, it is generally estimated that the cost of each replacement is RMB 70,000). This saving is especially noticeable in high-speed generator shaft systems.
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What is the minimum operating temperature for silicon nitride bearings?
Silicon nitride ceramic balls are precision ceramics sintered at high temperature in a non-oxidizing atmosphere. They have high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, can be used in seawater for a long time,
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How fast can ceramic bearings withstand?
First of all, it depends on whether it is an all-ceramic bearing or a ceramic ball bearing (hybrid bearing). If it is an all-ceramic bearing, the speed is usually lower than that of a steel bearing. If it is a ceramic ball bearing, it can theoretically achieve a higher speed than a steel bearing. However, the specific speed needs to be analyzed according to the specific model/accuracy/configuration.
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High-performance ceramic ball hybrid bearings will be more widely used in wind turbines
Many companies that started to develop wind turbines have recently begun to realize the advantages of high-performance ceramic ball hybrid bearings, especially the use of ceramic ball hybrid bearings can increase the speed of the rotor shaft of the wind turbine blade from 30rpm to 2000rpm to generate more electrical energy.
More
According to the news on the website of the Ministry of Science and Technology on the 19th, the Beijing Sinoma Artificial Crystal Research Institute Co., Ltd. has successfully completed the acceptance of the major scientific and technological achievements transformation project in Beijing "Research and Industrial Development of Silicon Nitride Ceramic Bearing Balls for Wind Power Bearings".
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