6220-2RS Sealed Ball Bearing 100mm x 180mm x 34mm 6220-2RS Sealed, radial, deep groove ball bearing,6220-2RS bearing is made of Chrome Steel with chrome steel balls and steel cage,bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,6220-2RS bearing is sealed and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed,6220-2RS bearing is lubricated with grease.