Rolling bearing

摘要

Rolling bearing is disclosed in which the surfaces of the rolling elements or raceway surfaces is randomly formed with an innumerable number of independent minute recessed depressions 11, the regions other than the depressions being smooth surfaces, and when an equivalent circle diameter of not more than phi3 mum excluded, the average area of the depressions is from not less than 10 mum² to not more than 70 mum², the maximum area being 1200 mum².