Amazon.com: SKF USA BR4 Roller Bearing (Tapered Set
The modern caged single row cylindrical roller bearing was invented in 1909 by Dr.-Ing. Josef Kirner| a leading engineer at the Norma-Compagnie| Cannstatt| Germany. This company was incorporated into the SKF Group in 1914. Since then| most major technical advancements in cylindrical roller bearings have been developed by SKF.