| 摘要 |
<p>A seal device (10a) which can prolong the intervals between overhauls by preventing entry of gas into a bearing. A seal cap (11) having a first opening (14) sized to receive a motor shaft (4) and a second opening (15) sized to cover at least a bearing (6a,6b). Grease (12) is poured into the cap (11), and the first opening (14) is sealed by an O-ring (13). This prevents entry of gas into the bearing (6a,6b), thereby prolonging intervals between overhauls. <IMAGE></p> |
