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.

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.