| 摘要 |
PROBLEM TO BE SOLVED: To provide an antifriction chain to perform smooth bending slide for a long period without the occurrence of abnormal wear elongation even when the chain is used together with lubrication oil extremely deteriorated and high in the degree of oxidation. SOLUTION: In the chain formed such that two ends of a bush 12 are securely fitted in bush holes 11a of a pair of inner bush plates 11, respectively, two ends of a coupling pin 15 are rotationally inserted in a fitted-in state in the bush 12 are securely fitted in pin holes 14a of a pair of outer plates 14 situated on both outer sides of a pair of the inner plates 11, the bush 12 is formed of a base material constituted such that thermoset treatment is applied on one kind selected from austenite stainless steel, martensite stainless steel, persipitation hardening stainless steel, high-carbon chrome bearing steel, and alloy tool steel. COPYRIGHT: (C)2004,JPO
|
