The bolt-type curve roller is generally of a fully loaded roller structure. The raceway of the bolt shaft is quenched. In order to avoid stress concentration, the outer surface of the thick-wall outer ring of the roller is curved. The outer ring has two integral ribs, and the axial direction is guided by rollers. The head of the bolt shaft and the pressed side retaining ring provide axial support for the outer ring through rollers.

Curved roller bearing is suitable for heavy radial load. Since the outer ring is guided axially by rollers, the bearing can also bear heavy axial load and allow relatively high-speed operation. However, because the roller is fully loaded, it is necessary to add lubricating grease frequently. The lubricant can be added through the holes on both ends of the spindle and the spindle body.