The bearings are coated with an appropriate amount of anti-rust oil and packed with anti-rust paper when they leave the factory.
As long as the packaging is not damaged, the quality of the bearings will be guaranteed. However, for long-term storage, it is advisable to store it on a shelf 30cm above the ground under the condition that the humidity is lower than 65% and the temperature is about 20°C. In addition, the storage place should avoid direct sunlight or contact with cold walls.