... managed, and sophisticated in bearing. Self-aligning Roller BearingsIt has two row rollers ,one common spherical raceway in outer ring ... ; automotive components, pumps,machinery.Type : single row self-aligning roller bearings 20200 series, 20300 series, 20200K series, 20300K ... series, Double row self-aligning roller bearings 23100 series , 21300 series, 22200 series, ...