5300 Series Double Row Radial Ball Bearings have angular contact ball bearing which is designed to meet the demand for increased axial and radial rigidity in the applications where space is limited. This specific ball bearing are used for different necessities which are for heavy radial loads, two directional loads are encountered, and combined thrust loads and radial. Another important fact is the non-filling slot allows higher speed operations. FYI, this specific bearing in the 5200 Series are produced with shields and seals. The angle of contact converts outside of the bearing which offers increased resistance.