| 摘要 |
Lubricant, which is shown by the following formula:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCF 3 -(OCF 2 CF 2 ) m -(OCF 2 ) n -OCF 3 €ƒ€ƒ€ƒ€ƒ€ƒ[Chem. 1]
and contains PFPE whose average molecular weight is 11000 or more, and PTFE particles of which the average diameter of primary particles is 1 µm or less, is disposed on at least one of the first raceway of the first bearing ring, the second raceway of the second bearing ring, the surfaces of the rolling elements, and the surfaces of the respective pockets of the cage which face the rolling elements, in a ratio of 9 to 16 g per 1 m 2 with respect to a total area obtained by adding up the area of the first raceway, the area of the second raceway, the area of the surfaces of the rolling elements, and the area of the surfaces of the respective pockets of the cage which face the rolling elements.
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