| 摘要 |
PROBLEM TO BE SOLVED: To provide a conveyor chain, capable of restricting roller rotation defective, and improving abrasion life between a bushing and a roller. SOLUTION: The bushing 110 has thin step parts 110a at both end parts, which are a little longer than thickness of an inner link plate 120. The step part 110a is fitted into a bushing hole 120a bored in the inner link plate 120 in such a way that a tip part of the step part 110a protrudes on the side of an outer link plate 150, when a little gap A is formed between the inner link plate 120 and the outer link plate 150. An average gap between an inner circumferential surface of the roller 130 and an outer circumferential surface of the bushing 110 is set to be more than twice as large as a size-based standard average gap. COPYRIGHT: (C)2006,JPO&NCIPI
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