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AssigneeTsubakimoto Chain Co.
InventorsTakeshi Kondo, Toshihiko Takashima, Ikutaro Nakagawa, Takahisa Andoh, Masahide Komeda
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The oil-free chain is obtained by connecting a pair of inner link plates which are connected by oil-impregnated bushings and a pair of outer link plates, which are connected by pins inserted into adjacent oil-impregnated bushings of adjacent inner link plates alternately. The oil-impregnated bushing is obtained by impregnating a bushing made of a metal sintered body with perfluoropolyether having a kinematic viscosity at 40° C. equal to or higher than 350 mm2/s. The bushing is impregnated with perfluoropolyether having a kinematic viscosity corresponding to the operating temperature of the oil-free chain.
An oil-impregnated bushing made of a metal sintered body impregnated with lubricating oil containing perfluoropolyether as a major ingredient, wherein
A method for manufacturing an oil-impregnated bushing comprising a step of impregnating a bushing made of a metal sintered body with lubricating oil containing perfluoropolyether as a major ingredient, wherein
A method for manufacturing an oil-impregnated bushing comprising a step of impregnating a bushing made of a metal sintered body with lubricating oil containing perfluoropolyether as a major ingredient, wherein
A method for manufacturing an oil-impregnated bushing comprising a step of impregnating a bushing made of a metal sintered body with lubricating oil containing perfluoropolyether as a major ingredient, wherein
Dependencies are inferred from the claim text.