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.