The single row deep groove ball bearings have relatively deep raceways on both rings without a filling slot and they are non-separable. High load ratings are achieved by optimum sizes of balls and by their conformity to the raceways. They can carry axial and radial loads in both direc-tions and are suitable even for high rotati-onal speeds. These bearings are manufac-tured in a broad assortment and are the most common rolling bearing type.