Thin-walled ferrule bearings are highly accurate, very quiet and have a high load carrying capacity. These ball bearings are available in three designs and are extremely small and mostly square in cross section. In these series, even with larger shaft diameters and bearing bores, the cross section remains the same. These bearings are therefore referred to as equal sections (CS). It is this feature that distinguishes thin-walled ferrule bearings in the standard ISO series from conventional bearings.

Therefore, you can choose a larger cross section and use a more load bearing without having to change the shaft diameter. Thin-walled ferrule bearings can be designed to be extremely light and require very little space.