| 摘要 |
<p>The hub is made of an elastic plastic material such as a polyamide of the nylon 6-6 type. It comprises three main parts, two half bodies (5, 6) fitted together on a fluted inner sleeve (7) of which the inner bore (11) receives two middle bearings (13, 14). The centering is provided by ball thrusts (16, 17) pressed by nuts (20, 20') with interpositioning of elastic shims (22, 23).</p> |
