| 摘要 |
To provide a crawler bushing and a crawler link device that can maintain a sealing function stably on a long-term basis and permits easy maintenance for recovery of the sealing function. The bushing includes; crawler bushing body (31) including large-diameter cylindrical part (31a) defining an intermediate section along axis (O) and small-diameter cylindrical part (31b) which defines an end section along axis (O) and is smaller in diameter than large-diameter cylindrical part (31a); elastic ring (32) mounted to an outer periphery of small-diameter cylindrical part (31b); seal ring (33) which is formed with seal contact end face (37) at its outer end and coupled to small-diameter cylindrical part (31b) through elastic ring (32); reverse tapered surface (36) and mountain-shaped projection (35) for preventing outward movement of elastic ring (32) along axis (O) of small-diameter cylindrical part (31b); and tongue-shaped projection (39) and reverse tapered surface (40) for preventing outward movement of seal ring (33) along axis (O) of small-diameter cylindrical part (31b).
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