Rolling bearing for tenter clip

Details Rolling bearing for tenter clip Rolling bearing for tenter clip

2007-01-23

2011-10-25

Hannon, Thomas R (Department: 3656)

Bearings

Rotary bearing

Antifriction bearing

C384S462000

Reexamination Certificate

active

08043011

ABSTRACT:
The present invention provides a rolling bearing, for a tenter clip, which is capable of restraining deterioration of a sealing member even though the sealing member contacts ester oil, and is excellent in reliability and durability at high temperatures. A periphery of an outer ring of the rolling bearing for use in the tenter clip of a film-stretching apparatus is lubricated with the ester oil. In the sealing member which covers openings disposed at both axial ends of an inner ring and the outer ring of the rolling bearing, at least a portion of the sealing member which contacts the ester oil is made of (A) a fluororubber molding of a vulcanizable fluororubber composition which comprises a copolymer containing tetrafluoroethylene (TFE), propylene, and a to-be-crosslinked monomer consisting of unsaturated hydrocarbon, having two to four carbon atoms, in which a part of hydrogen atoms is substituted with fluorine atoms or (B) a fluororubber molding of at least one fluororubber composition selected from a vulcanizable fluororubber composition containing a TFE-propylene binary copolymer and a vulcanizable fluororubber composition containing a vinylidene fluoride-TFE-propylene ternary copolymer.

REFERENCES:
patent: 6572269 (2003-06-01), Yabe et al.
patent: 2005/0100259 (2005-05-01), Egami et al.
patent: 1529975 (2005-05-01), None
patent: 2002-310171 (2002-10-01), None
patent: 2004-301167 (2004-10-01), None
patent: 2005-140261 (2005-06-01), None
patent: WO 02/092683 (2002-11-01), None

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