| 摘要 |
In the bore of the support there is fitted a sheath of, for example, plastics material or cardboard, which surrounds a collar of elastomer having a centre opening in which is engaged a very thin steel sleeve whose inner surface constitutes the outer raceway of a ring arrangement of needles guided in a cage and in a rolling contact with the outer surface of a shaft. The thin sleeve is preformed in accordance with an irregular profile which defines three cylindrical segments of large diameter which alternate with inwardly offset cylindrical segments which define for the needles a reduced, and preferably zero, clearance for their circulation.
|
