6204ZZ Shielded Ball Bearing 20 x 47 x 14 mm 6204ZZ Shielded Ball Bearing is radial, deep groove ball bearings,6204ZZ bearing is made of Chrome Steel, bearing is closed with 2 Metal Shields, one Shield from each side to protect the bearing from dust or any possible contamination, bearing is sealed and self lubricated,the 6204ZZ inner diameter is 20mm, the 6204ZZ outer diameter is 47mm and the 6204ZZ width is 14mm, 6204ZZ bearing is lubricated with grease.