304 Stainless Steel Bearings are made ofAustenitic stainless steelMagnetic-free bearings, primarily made of SUS304 Or SUS316L Model in stainless steel, both inner and outer rings, as well as rolling elements, are made of stainless steel. Due to the fact that austenitic stainless steel cannot be hardened as a whole, this bearing is suitable forFood Machinery、Packaging EquipmentMedical Instruments & EquipmentChemical EquipmentWaiting for applications with high corrosion resistance requirements but low load.