| 摘要 |
PROBLEM TO BE SOLVED: To provide a chain structure which improves abrasion resistance between a bush and a roller under any condition. SOLUTION: In this chain structure, the ends of an outer link and an inner link are rotatably jointed to each other by fit-assembling a pin 16 provided on the outer link 12 to a bush 18 provided on the inner link 14, and the roller 30 is rotatably fitted around the bush. Grooves 30a, 30b are formed on the inner periphery of the roller, and filled with embedding type dry solid lubricant M. The lubricant M is prevented from being vaporized or deteriorated by heating, thus improving abrasion resistance between the bush and the roller under any condition.
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