微量給油した場合の小径玉軸受の寿命

抄録

Although a lubricant that acts as a seal mainly to prolong the bearing life, but it is not well known that it also becomes the main cause of torque. Therefore, the bearing torque can be lowered by degreasing. However, the bearing life when degreased cannot be determined. Thus, in this study, the bearing life at without lubrication was clarified by the bearing endurance tests. As a result, the basic rating life at without lubrication was clarified 232 h (axial load : 10 N) and 16 h (axial load : 100 N). However, the bearing life obtained in this research can be applied only under this test condition, so the bearing life cannot be used industrially. Therefore, in the future, it is necessary to formulate the basic rating life by varying the load condition and the rotation speed.