In order to obtain the bearing's low friction torque, high rigidity, and good rotation accuracy, steel balls with small outer diameters are used. The use of hollow shafts ensures light weight and space for wiring. The thin-walled bearing realizes the extremely thin bearing section, and also realizes the miniaturization and light weight of the product. The variety of products expands its scope of use.

Thin-walled ring bearings are highly accurate, very quiet and have strong load-bearing capacity. These ball bearings have three designs and are extremely small and mostly square in cross section. In these series, even with larger shaft diameters and bearing holes, the cross-section remains the same. These bearings are therefore called equal sections.

Thin-walled ring bearings can be deep groove ball bearings (C), four-point contact bearings (X), angular contact ball bearings (E). The above various designs are provided in different series. The series depends on the size of the cross section. The ball matches the series. Deep groove ball bearings can support bidirectional axial load and radial load. Four-point contact bearings can support bidirectional axial loads as well as radial loads; therefore, they operate in the same way as double row angular contact ball bearings. Angular contact ball bearings can match the optimal number of balls and their contact angle is 30°. They support higher radial loads than deep groove ball bearings or four-point contact bearings, and can support axial loads from the same direction.