Bearing structure
AssigneesDaido Metal Company Ltd., Aichi Machine Industry So., Ltd.
InventorsAkira Kojima, Nobutaka Hiramatsu, Mitsuru Sugita, Akira Ono, Takayuki Shibayama, Yukitoshi Ogawa
Life of this patent
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Abstract
A bearing structure with a low coefficient of friction and a distinguished wear resistance is obtained by coating a shaft with a resin composition comprising PAI and 5 to 50% by weight of PTFE, based on total resin composition and/or coating a bearing with a resin composition comprising PEEK and not more than 50% by weight of PTFE, based on total resin composition. By adding potassium titanate whiskers or a lead compound to the bearing resin composition, more improved coefficient of friction and wear resistance are obtained.
Claims15
A bearing structure, which comprises a shaft and a bearing for supporting the shaft, the shaft and the bearing having a resin layer formed on the respective sliding surfaces, the resin layer on the shaft sliding surface being made from a resin composition comprising at least one member selected from the group consisting of epoxy resin, phenol resin, polyamideimide resin, polyimide resin, polyacetal resin, polyamide resin, polyphenylene sulfide resin, polyether ether ketone resin and tetrafluoroethylene-perfluoroalkylvinyl ether copolymer resin and 5 to 50% by weight of polytetrafluoroethylene based on total resin composition, and the resin layer on the bearing sliding surface being made from at least one member selected from the group consisting of epoxy resin, phenol resin, polyamideimide resin, polyimide resin, polyacetal resin, polyamide resin, polyphenylene sulfide resin, polyether ether ketone resin, tetrafluoroethyleneperfluoro-alkylvinyl ether copolymer resin and not more than 50% by weight of polytetrafluoroethylene based on total resin composition.
Dependencies are inferred from the claim text.