Vacuum bearings are a standard line in our SPACEA Series for special environments. Further specialized SPACEA bearings are available for corrosive, cleanroom, and high-temperature applications. All-Ceramic Bearings (Oxide-Based Ceramic Bearings) Deep Groove Ball Bearing, Spacea, All-Ceramic, 2CompWith ceramic outer/inner rings and balls, all-ceramic bearings have self-lubricating fluororesin cages to achieve excellent resistance to corrosion in nonmagnetic environments at atmospheric pressure and in vacuum. Features Non-magnetic constructionAn all-ceramic structure gives these bearings the highest resistance to corrosion. Long-lifeAnti-wear properties contribute to long operating life. Applications Semiconductor manufacturing equipmentOrganic electro-luminescence (OEL) manufacturing equipment