For large equipment that is not convenient for disassembly, such as fans, reducers, large motors, bearing pedestals, etc., the dynamic and static rings of the Borui sealed split structure bearing isolators are designed in split type, which is convenient for installation and maintenance. Aviation grade aluminum alloy materials are selected and surface oxidation treatment is carried out to enhance corrosion resistance. Or adopt bronze materials and special processing technology to ensure the processing accuracy and achieve better sealing performance while facilitating installation.