| 摘要 |
A structure for installing lip type seals on the inner peripheries of shaft holes in housings such that the seals come into intimate slidable contact with the circumferential surfaces of shafts inserted in the shaft holes. The lip type seals are adapted to have the same specifications and be usable even for applications where shaft diameters are the same but shaft hole diameters are different. To enable this, the lip type seals (1) have a structure where a lip type seal (1) is installed on the inner periphery of a shaft hole (72) with a cartridge (51) placed on the outer peripheral side of the seal (1) so as to be located between the inner periphery and the seal (1). The cartridge (51) has a stepped shape in which a large diameter tube section (54) is integrally formed with a small diameter tube section (52) with a step section (53) present in between. The lip type seal (1) is fitted to the inner peripheral surface of the small diameter section (52), and the outer peripheral surface of the large diameter section (54) is fitted to the inner periphery of the shaft hole (72). In production of the cartridge (51), the diameter of the small diameter tube section (52) is set to a fixed value and the diameter of the large diameter tube section (54) is set to the diameter of a shaft hole into which the cartridge (51) is planned to be fitted. |
