It has the characteristics of single-row steel ball configuration and structure, can be filled with more steel balls than the deep groove ball bearing with the same size, and has a high radial bearing capacity and unidirectional axial bearing capacity.

With a back-to-back structure of two rows of steel balls, it has a higher radial bearing capacity, bidirectional axial bearing capacity and upsetting moment, and can meet the rigidity requirement. Both open and closed configurations are available.

With a single row of steel balls, it can bear axial loads in two directions, occupying less axial space than the double-row angular contact ball bearing. With the split-inner-ring design, it can be filled with more steel balls for higher bearing capacity and installation and disassembly convenience.