| 摘要 |
PROBLEM TO BE SOLVED: To improve maintainability by enabling replacement of a seal member or a bearing used for a driving shaft without disassembling a case body for supporting the driving shaft. SOLUTION: This crawler type travelling device comprises the driving shaft 118 for outputting power transmitted from a driving source to a sprocket 11 of the crawler type travelling device, a hub 14 for fixing the sprocket 11 to the driving shaft 118, a case 133 for rotatably supporting the driving shaft 118 via a bearing 135, and the like. A seal retaining member 134 is disposed separately outside the case 133, and a sealing member 142 is disposed between the seal retaining member 134 and the hub 141. COPYRIGHT: (C)2005,JPO&NCIPI
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