| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a breakthrough swivel joint that includes a seal part 10 for dust sealing on one side of balls 8 of a sliding part 6 and also provided with a fluid conveyance route side seal part 11 on an opposite side having a packing part 9, which thereby can surely prevent ingress into the fluid conveyance route by means of the packing part 9 and also can surely prevent lubricating oil from reaching the packing part 9 by means of the fluid conveyance route side seal part 11 and is double sealed against ingress of the lubricating oil into the fluid conveyance route. <P>SOLUTION: A swivel joint using a ball bearing provided in the middle of a fluid conveyance route 1 includes a packing part 9 for preventing leakage of fluid from the fluid conveyance route 1, in a sliding part 6, and is also provided with a fluid conveyance route side seal part 11 for preventing ingress of lubricating oil for filling up a part for the balls into the packing part 9, in the sliding part 6 between the balls 8 and the packing part 9. <P>COPYRIGHT: (C)2012,JPO&INPIT |
