INA bearings should be stored in a dry, clean room with as constant a temperature as possible and a relative humidity not higher than 65%. INA bearings are supplied in a preserved condition (anti-corrosive agent on an oil base, or a dry preservative with VCI paper) and should therefore not be removed from the original package until immediately before assembly.
After a few INA bearings are taken from a multi-piece package with dry preservatives, the package must be closed immediately, since the protective vapor phase of the VCI paper can only be maintained in the closed package. The INA bearings which were removed must be greased or oiled immediately.
The storage period of greased and sealed bearings should, even in case of proper storage, not exceed three years. Changes in the grease resulting from long storage or unfavorable atmospheric conditions can make it necessary to clean and regrease the INA bearings before mounting.
