抄録
The rolling bearing that is the subject of this study is the machine element which supports an axis and permits rotary motion Or linear motion, and it is used by various apparatuses.: transportation equipment , a machine tool , electronic equipment , the household electrical appliance a car , a plane and soon. This rolling bearing becomes one of the very important machine elements now in our life. High precision is required by the specific designs such as the spindles of the machine tool in that The life of this kind of bearing often becomes the application limit by not detachment by die metal fatigue but the rise in rotary precision, vibration and noise. It is said that poor lubrication by the lubricant deterioration is common as for these causes, and aging transformation of the bearing material by using a bearing for a long term is not considered very much. Therefore, in this study, I leave the steel ball which is one of the bearing materials controlling bearing performance unattended under the high temperature situation and observe transformation.
