One of the most important components of a tapered roller bearing is the cage. The main function of the cage during operation is to maintain roller spacing. Although being one of the more complicated parts of a tapered roller bearing historically, very little specific engineering has been done to provide a design basis for the cage. This dissertation analyzed specifically the cages from tapered roller bearings as used in the railway industry.; Metallurgical testing of cages with cracks has revealed that the failure mode of the cages was fatigue fracture which initiated at the small-end cage pocket. Factors which contributed to the fatigue failure were determined. Analysis included vibration and finite element analysis (FEA). Cages analyzed included 6 1/2 x 12 and 7 x 12 steel cages and 6 1/2 x 12 plastic cages.; The natural frequencies of the cage were determined and then compared to the exciting frequencies of the bearings. Vibrations, internal and external to the bearing, were considered. The magnitude and frequencies of these excitation vibrations were input into the finite element modeling software, Algor, to find response of the cage. It was found that the stresses generated in the small end cage pocket of larger 7 x 12 steel cages were as much as twice that of the 61/2 x 12 steel cages. The stress generated at the pocket of the 6 1/2 x 12 plastic cage was smaller than the 6 1/2 x 12 steel cage.
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机译：保持架是圆锥滚子轴承最重要的组成部分之一。保持架在运行过程中的主要功能是保持滚筒间距。尽管一直以来是圆锥滚子轴承中较复杂的零件之一，但很少进行具体工程来为保持架提供设计基础。本文专门分析了用于铁路工业的圆锥滚子轴承保持架。对带有裂纹的保持架的冶金测试表明，保持架的失效模式是疲劳断裂，该疲劳断裂始于保持架的小端腔。确定了导致疲劳破坏的因素。分析包括振动和有限元分析（FEA）。分析的笼子包括6 1/2 x 12和7 x 12钢笼子和6 1/2 x 12塑料笼子。确定了保持架的固有频率，然后将其与轴承的激励频率进行比较。考虑了轴承内部和外部的振动。这些激发振动的大小和频率被输入到有限元建模软件Algor中，以寻找保持架的响应。结果发现，在较大的7 x 12钢笼子的小端笼中产生的应力是61/2 x 12钢笼子的两倍。在6 1/2 x 12塑料笼的凹处产生的应力小于6 1/2 x 12钢笼的应力。
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