| 主权项 |
1. A rolling bearing device for an information recording and reproducing apparatus, comprising:
a shaft; and a rolling bearing comprising a grease, wherein the grease comprises: a base oil; a thickener; and at least one kind of an antioxidant selected from an amine-based antioxidant (A) expressed by the following general formula (1), and a phenol-based antioxidant (B) expressed by the following general formula (2); wherein in formula (1), R1 and R2 each independently represents an alkyl group having 1 to 12 carbon atoms, or a hydrogen atom, provided that, at least one of R1 and R2 is an alkyl group having 1 to 12 carbon atoms, and in formula (2), R11 and R12 each independently represents an alkyl group having 1 to 8 carbon atoms, R13 represents an alkylene group having 1 to 8 carbon atoms, n represents a number of 1 to 6, X1 represents a residue obtained after n hydroxyl groups are removed from an aliphatic m-hydric alcohol having 1 to 24 carbon atoms, and m represents a number of 1 to 6 which is equal to or greater than n, provided that, when n is 5 or 6, the number of carbon atoms of the aliphatic m-hydric alcohol in X1 is 2 to 24. |
