| 摘要 |
PROBLEM TO BE SOLVED: To spread a freedom degree of design so as to provided optimum bearing performance, by using, as lubricating fluid, mixed oil with oil of simple substance composition as base oil of a lubricating fluid mixed with oil of simple substance composition of different viscosity of at least one kind or more. SOLUTION: Only a certain value of bearing performance can be obtained in oil of simple substance composition of DOZ, DODN. But a bearing performance value can be changed as compared with in the case of using only oil of simple substance composition, by mixing the DOZ, DODN. As a result, an optimum bearing can be designed. Consequently, torque is satisfied, but rigidity is too low, in the DOZ. In the case that the rigidity is sufficient but the torque is too high in the DODN, when mixing ratio (proportion) of oil is changed so as to satisfy the torque and the rigidity, viscosity of oil can be continuously changed, and the optimum bearing for a use condition can be provided. |
