Tsubakimoto Chain Company

Tomoaki Nakayasu

Nobuhiro Uchida

Takashi Kawata

Kota Yoshimoto

Misa Asada

Kazuyuki Ebinuma

Shouta Miyanaga

Provided are a chain component that has a simple surface treatment structure and can maintain good wear resistance over a long time, and a chain that includes the chain component and maintains good wear elongation resistance. The chain component of a power transmission chain for industrial use includes a chromium nitride layer formed on an outer side of a steel base material and containing more than 0 mass % but not more than 55 mass % iron. At least a surface of the chromium nitride layer that slides against other components is a rough surface with peaks and valleys.

Chain component and chain

A chain component which has a simple surface treatment structure and in which satisfactory wear resistance is maintained for a long term; and a chain which employs this chain component so that a satisfactory wear elongation resistance is maintained are provided. A roller chain serving as an industrial chain for power transmission is constructed such that a pair of outer plates linked by two pins and a pair of inner plates linked together by two bushes onto each of which a roller is fit are alternately linked together in a plurality in a state that each pin is loosely fit in each bush. A chromium nitride layer is formed on the outer side of the steel-based substrate of the pin. The chromium nitride layer contains iron at a content higher than 0 mass % and lower than or equal to 55 mass %.

Growing community of inventors

Osaka, Japan

Tomoaki Nakayasu