8626-2RS Sealed Ball Bearing 130mm x 165mm x 18mm 8626-2RS Sealed deep groove ball bearing, bearing is closed with rubber seals to protect the bearing from dust or any possible contamination, 8626-2RS bearing is sealed and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed, 8626-2RS bearing is lubricated with greased, 6800-2RS bearing is made of Chrome Steel.