Detailed Product Description NTN BEARING : the size of deep-groove ball bearing we produce include:6000 series,6200 series, 6300 series, ... series, 62200 series, 62300 series, 63000 series.Deep groove ball bearing feature1) Model: Open, Z, ZZ, RZ,2RZ,RS, 2RS ... electric motors; automotive components, pumps,machinery.Deep groove ball bearing sizemetric deep groove ball bearings (open)inch deep groove ball ...