| abstract |
An object of the present invention is to provide an ester-based lubricating base oil for a fluid bearing that has excellent hydrolysis resistance and low-temperature fluidity, a high viscosity index, and good evaporation resistance. The present invention relates to a lubricating base oil for a fluid bearing comprising a compound represented by general formula (1): n n n n n n n n n n wherein R 1 represents a linear C 7 -C 13 alkyl group, and a compound represented by general formula (2): n n n n n n n n n n wherein R 2 represents a linear C 7 -C 13 alkyl group; and relates to a base oil composition comprising the base oil. |