The bolt shaft raceway of the bolted roller bearing is quenched, and the thick-walled outer ring of the roller has an arched outer surface to prevent force concentration. The outer ring features two integral flanges, guided axially by the rollers. The bolt shaft head and the fitted side flange provide axial support to the outer ring through the rollers.

The outer ring of the bolted roller bearing (PWKR series) features double raceways, with the rollers in two rows separated, forming a fully-filled double row cylindrical roller structure.