| 摘要 |
PROBLEM TO BE SOLVED: To provide an anti-friction bearing for a tenter clip which can suppress the degradation of a seal member even when it gets into touch with an ester oil and is superior in reliability and high-temperature durability. SOLUTION: The anti-friction bearing 18 is used for the tenter clip of a film drawing device, and the periphery of its outer ring is lubricated with the ester oil. The anti-friction bearing 18 is fitted with an inner ring, the outer ring, a plurality of rolling bodies existing between the inner ring and the outer ring, and the seal member covering both end openings in the axial direction of the inner and outer rings. In the seal member, at least a part contacting the ester oil is made of a fluororubber molding. The fluororubber molding is a molding of a vulcanizable fluororubber composition comprising a copolymer containing tetrafluoroethylene, propylene, and a crosslinking monomer comprising a 2-4C unsaturated hydrocarbon in which part of hydrogen atoms are replaced with fluorine atoms. COPYRIGHT: (C)2007,JPO&INPIT
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