| 摘要 |
<p>A double-seal system for a bearing of a cone bit is mainly formed by a cone leg bearing (1), a cone inner hole (2), two elastic seal members (8, 9), and a seal groove (7). The two elastic seal members (8, 9) are identical and arranged in the same seal groove (7). The two elastic seal members (8, 9) form the double-seal system, thereby improving the seal reliability and the seal life, and further prolonging the service life of the bit.</p> |
