| 摘要 |
<p>A stack of components (5, 5', 5'' etc.) such as stator discs of a turbo-molecular pump, alternating with spacer elements (10, 6', 6'', etc.), includes a spacer element (10) having a deformable cutter-shaped portion (11). When first mounted, this portion (11) is crushed, so as to absorb the tolerances of the stack between bearing surfaces defined, for example, by a pump body and a corresponding casing (1). The invention applies particularly to turbo-molecular pumps and aims to eliminate the adjustment, rework or pairing (matching) normally necessary when mounting a stator assembly. <IMAGE></p> |
