From labyrinth seal to magnetic bearing isolators – feel free to ask questions of all kinds

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The introduction of bearing isolators (which appeared in the 1980s) significantly extended the service life of bearings as critical components in moving equipment. Following the skeleton oil seal (invented in the 1920s), it provided a relatively reliable guarantee for the long-term maintenance-free operation of mechanical equipment. Although labyrinth bearing isolators effectively prevent moisture from contaminating the lubricating oil during operation, long-term use has shown that they still cannot resolve issues such as oil leakage when the machine is shut down or negative pressure drawing air into the bearing housing ； Isolator temperature too high ； Complete separation of oil and water cannot be achieved ； It is unable to meet the lubrication requirements under oil mist lubrication or when the tank is full of oil ； The IP67 shaft protection mode cannot be achieved ； A series of problems such as the difficulty in disassembly and assembly. After 2000, through dedicated research and development, the ISOMAG group managed to overcome various technical challenges and developed the next generation of bearing isolators, known as Magnetic Face Seal (which can be translated in Chinese as magnetic bearing isolator or magnetic oil seal). The new type of magnetic bearing isolator is replacing the previous generation at a rapid pace; its superior oil-water separation performance (IP67 rating), lower protection temperature (15 degrees Celsius lower on average than labyrinth isolators), compatibility with all existing lubrication methods, ability to operate at higher speeds (linear velocity up to 76 m/s), tolerance for greater shaft deflection and play, as well as easier installation and maintenance, are all features that are gaining recognition and adoption by an increasing number of customers. :victory::victory::hug::hug: