| 摘要 |
<p>Lubricated drawing ring of non-sinterized metallic material, having an annular track 2 with a surface 4, 6 for the movement of a slide and provided with a wick 12 type lubricating system to supply a lubricating liquid to at least one lubrication passageway 8, 10 emerging onto the sliding surface. The sliding surface 4, 6 has a plurality of microscopic cavities which occupy an area more than 50 percent of the overall area of the sliding surface. <IMAGE></p> |
