| | | Norma-Compagnie, Cannstatt, Germany. This company was incorporated into the SKF Group in 1914. Since then, the history of the single row cylindrical roller bearing has been intertwined with that of SKF and there have been many developmental milestones. With each milestone, SKF offered design and maintenance engineers the option to power up, size-down and improve the performance of their application. In the 1960s, SKF's development of the E-bearing, with its reinforced roller complement, increased the load carrying ability by an average of 35 %. Then, in the 1980's when SKF introduced the single row EC cylindrical roller bearing, design engineers and end-users were | | offered three additional advantages: increased axial load carrying ability, optimized running properties and reduced maintenance. These are just two of the SKF pioneering successes from the past. In addition to the caged single row and listed in this brochure, the comprehensive SKF cylindrical roller bearing assortment also includes single and double row full complement bearings (without cage), precision bearings, multi-row bearings, printing press bearings as well as support rollers (- pages 62 and 63). | | |
| | | SKF milestones leading to the single row cylindrical roller bearings of today 1909: Patent granted to Dr.-Ing. Kirner for the "NU bearing" 1930: Participation in standardization of boundary dimensions 1950: Introduction of the "B" roller, slightly crowned toward the roller ends, in order to prevent damaging edge stresses 1962: Introduction of the E-type cylindrical roller bearings with reinforced roller complement 1981: Introduction of the EC cylindrical roller bearings with modified roller end/flange contact 1984: Introduction of the logarithmic contact profile providing excellent load distribution 2002: Introduction of SKF Explorer performance class bearings | | |
| | | Cylindrical roller bearings are a tradition within SKF. It is hardly surprising that the major technical developments for these bearings have been initiated by SKF. It all started in 1909 with the invention of the modern caged single row cylindrical roller bearing by Dr.-Ing. Josef Kirner, a leading engineer at the | | |