6221DDU Bearing 105x190x36 Sealed Large6221DDU Sealed Ball Bearing 105mm x 190mm x 36mm 6221DDU Sealed, radial, deep groove ball bearing, 6221DDU bearing is made from 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, 6221DDU bearing is sealed and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed, 6221DDU bearing is lubricated with grease. 6221DDU Ball