| 摘要 |
PURPOSE: To provide a sealed chain wherein the chain width is not increased, rupture strength is not degraded, weight is not increased, compatibility with a standard chain is provided, bending resistance is not increased, and life of a sealing member is not degraded, even when a relatively thick sealing member, as typified by an O-ring, is used. CONSTITUTION: In the sealed chain comprising an inner link plate 12 with both ends of a bush 11 pressedly fixed in a bush press-in hole 12a, and an outer link plate 14 where both ends of a pin 13 loosely fitted in a bush 11 are fixed and provided with an O-ring 16 (the sealing member formed with an elastic body) surrounding the peripheral surface of the pin 13 and so fitted that it is located at least between an inner surface 14b of the outer link plate 14 and an end face 11b of the bush 11, a gap S1 is formed in the bush press-in hole 12a, and a part of the O-ring 16 (the sealing member formed with an elastic body) is fitted in the gap S1.
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