As an important mechanical foundation part, insulated bearing is the leader in the bearing field due to its superior performance, high temperature resistance, super strength, corrosion resistance and other characteristics which are incomparable to metal bearing. The specific advantages of insulated bearing compared with ordinary bearing are as follows: As the insulating bearing has the characteristics of corrosion resistance, it is suitable to work in the harsh conditions full of corrosive media. The special spraying process is adopted for the electrically insulated bearing. The outer surface of the bearing is sprayed with high-quality coating, which has strong binding force with the substrate and good insulation performance. It can avoid the electric erosion of the bearing caused by the induced current, prevent the damage caused by the current to the grease, rolling body and raceway, and greatly improve the service life of the bearing compared with the common ...