Cylindrical Roller Bearings - NTN Global
2009-9-2 · First modern cylindrical roller bearing In 1909, Dr.-Ing. Josef Kirner, a leading engineer at the Norma Compagnie in Cannstatt in Germany, was granted a patent for his invention of a modern cylindrical roller bearing. The bearing design had crowned raceways (fig . 1), thus avoiding damaging edge stresses at the roller ends.
Get Price