S6801ZZ Ball Bearing 12x21x5 mm Sealed Bearings S6801ZZ S6801ZZ Bearing, categorized as regular section, metal shielded, radial, deep groove ball bearings,S6801ZZ bearings are made of stainless Steel with stainless Steel balls and steel cage, S6801ZZ bearing are closed with metal shields to protect the bearing from dust or any possible contamination,S6801ZZ bearings are shielded and self lubricated,the S6801ZZ inner diameter is 12mm, the S6801ZZ outer diameter is 21mm and the S6801ZZ width is 5mm,the quality is set to EMQ (electric motor quality) to ensure high speeds up to 98000 revolutions per minute (RPM), S6801ZZ bearings are lubricated with grease.