6300RS Sealed Ball Bearing 10 x 35 x 11 mm 6300RS Sealed Ball Bearing is radial, deep groove ball bearing,6300RS 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,6300RS bearings are sealed and self lubricated, the quality is set to EMQ (electric motor quality) to ensure high speed,6300RS bearing is lubricated with grease.