Are ceramic bearings corrosion resistant?
2022-08-18
Yes. Ceramic bearings are more corrosion resistant than stainless steel bearings.
The reaction speed of ceramic itself with acid and alkali is very, very slow, so from the perspective of acid and alkali corrosion resistance, the life of ceramic bearings is many times longer than that of stainless steel bearings.
Ceramic bearings are running. If the ceramic materials are not micro-welded, then the ceramic bearings do not need to use lubricating oil. Lubricants are only required when the microwelds frictionally interact with the metal, rolling elements and raceway surfaces.
As far as the current use of ceramic bearings is concerned, most of them will not encounter this situation, so ceramic bearings do not need lubricating oil.
2. Ceramic bearings need lubricating oil
During the use of ceramic bearings, if they have been used for a long time, the flexibility of ceramic bearings must not be very good, so do ceramic bearings need lubricating oil at this time? Answers are needed.
The use of lubricating oil at this time can reduce bearing wear, reduce bearing scrap rate, and ensure normal bearing service life. In addition, it has the following benefits:
(1) Cleaning effect: Long-term operation of the bearing will produce fine powder, and the lubricating oil will take away part of the powder to avoid damaging the oil film.
(2) Lubrication: When the shaft rotates, an oil film is formed between the dynamic and static parts of the shaft and the bearing to prevent dynamic and static friction.
(3) Cooling effect: The shaft works at high temperature, and the temperature of the bearing is also very high. When the lubricating oil flows through the bearing, part of the heat is taken away to cool the bearing.
Latest news
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,
More
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.
More
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".
More
13805337576
chinasdyg@chinasdyg.com 