NSK single row radial-Thrust ball bearings have contact angle, so these bearings are suit for carrying azial loads or combined
loads in a single direction. Usually, two or more bearings are used in duplex pairs, for the single bearing will carry the axial compound foce of the radial loads in structure. The rigidity
of the single radial-thrust ball bearings can be increased by preload. These bearings are mainly used high running accuracy spindle of the machine
tools and so on .