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The new system uses a highly corrosion-resistant martensitic stainless steel (ES1) in the inner and outer wheels. ES1 inhibits the production of Eutectic Carbide by adjusting the amount of carbon and chromium. At the same time, hardness and corrosion resistance are improved by adding nitrogen gas during the steel making process. It has 10 times more corrosion resistance than the "SUJ2" steel used in ordinary bearings.
At the "SEMICONJapan2005" exhibition held at the Messe Convention and Exhibition Center in Chiba, Japan from December 7 to 9, 2005, Seiko exhibited bearings that can be used in water, acid and alkaline environments - "stainless steel automatic Series of Self-aligning Roller Bearings (Self-aligningRollerBearing). This series is an add-on to the "Spacea Bearing" series for use in dust-free environments, vacuum and high and low temperatures. By using this bearing, it is possible to extend the warranty time of the bearing used in the conveying equipment used in the washing process.