Borgwarner Inc.

Junichi Eda

Yukio Yoshida

Kazuo Hokkirigawa

Yasushi Miyazaki

[Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link platesfor a silent chain having pinholesfor inserting linking pinsare formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.

Sliding member, chain link, and chain comprising said link

A silent chainin which a plurality of linkseach having a pair of tooth partswhich mesh with sprockets and a pair of pin holesare arranged in the lengthwise direction and thickness direction and are linked so as to be able to pivot about one another by linking pinswhich are inserted into the pin holes, and sliding platesare provided. The sliding plateshave a pair of pin holesinto which the linking pinsare inserted, and also have a back surface partwhich has a greater back surface height hthan the back surface height hof the linksand comes into contact with a tensioner arm or chain guide. The sliding platesdo not have tooth parts which mesh with the sprockets.

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Mie, Japan

Junichi Eda