LUBRICATING OIL FOR DYNAMIC-FLUID-PRESSURE BEARING, DYNAMIC-FLUID-PRESSURE BEARING, MOTOR, AND INFORMATION RECORDING/REPRODUCING APPARATUS

摘要

A lubricating oil for dynamic-fluid-pressure bearings which comprises a lube base comprising at least one phosphoric triester represented by the general formula (I): (I) (wherein RA, RB, and RC each represents alkyl), wherein the lube base comprises as the main base oil the phosphoric triester in which the three alkyls in the general formula (I) are saturated hydrocarbon groups and one of the three saturated hydrocarbon groups differs in the number of carbon atoms from the other two saturated hydrocarbon groups.