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.