Deep Groove Ball Bearing R3A 1.ISO9001:2008 2.High precision,long life,low noise ... BEARING R3AModel No: Inch Bearing R3A1.Certificate: ISO9001: 2008;ISO14001:20042.Material: Chrome Steel GCr15;3.Experience: More ... Agricultural machinery,Machine tool...Products Range6000 series,6200 series,6300 series,6400 series,6700 series,6800 series,6900 series,16000 series, and bearing cage.Quality GruanteeYou ...