Roller chain
AssigneeTsubakimoto Chain Co. (Japanese Corporation)
InventorTakashi Tohara
Life of this patent
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Abstract
To provide a roller chain, which does not generate abnormal wear elongation and smoothly articulately slide for a long period of time even if the roller chain is used together with an extremely deteriorated lubricating oil having a high degree of oxidation. In a roller chain in which both ends of a bush are press-fit to bush holes of a pair of inner plates, both ends of a pin loosely penetrated into the bush are press-fit into pin holes of a pair of outer plates disposed outside the both pair of inner plates and a roller is fit onto said bush, a material of said bush is carburized stainless steel and a vanadium carbide layer is formed on the surface of the pin.
Claims2
A roller chain in which both ends of a bush are press-fit to bush holes of a pair of inner plates, both ends of a pin loosely penetrated into said bush are press-fit into pin holes of a pair of outer plates disposed outside said both pair of inner plates and a roller is fit onto said bush, characterized in that
- a material of said bush is carburized stainless steel and
- a vanadium carbide layer is formed on the surface of said pin.
Dependencies are inferred from the claim text.