| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing in which generation of heat of an enclosed grease under high speed rotation and evaporation of the oil content in the high-vacuum condition are markedly small as compared with the previous one and which is well adapted for vacuum application, particularly, for a support of turbine blade of turbo molecular pump. SOLUTION: The rolling bearing in which a plurality of rolling elements 5 are held approximately with equal spacing through a retainer 7 between an inner ring 2 and an outer ring 4 and a grease of which base oil is hydrocarbon oil having a vapor pressure of 1.5×10-5 Pa or less at 80 deg.C is enclosed. |
