SMR62ZZ Shielded Ball Bearing 2mm x 6mm x 2.5mm SMR62ZZ Shielded, radial, deep groove ball bearing,SMR62ZZ is made of stainless Steel with stainless Steel balls and steel cage,bearing is closed with metal shields to protect the bearing from dust or any possible contamination,SMR62ZZ bearing is shielded and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed,SMR62ZZ bearing is lubricated with grease.