Medical instruments bearings used in medical device applications must meet unique requirements because of the extraordinary conditions in which they perform. Biocompatibility, corrosion resistance and sterilization are just a few of the challenges medical bearings must accommodate. With over 15 years of experience, ISUTAMI bearings are worth your trust. ISUTAMI medical bearings are manufactured from 440C stainless steel. The material's corrosion resistance allows for repeated sterilizing. Its highly finished, honed surface provides a long lasting structure for the 440C or Silicon Nitride (ceramic) balls, which allows the bearing to rotate smoothly at the high speeds.