| 摘要 |
<p>A revolving member (1) is disclosed that is made of self-lubricating material, adapted to be used as rolling means for spring-holder boxes on a winding shaft (14) for rolling gates and rolling shutters, in which the revolving member (1) is composed of a circular crown (2) adapted to be coaxially inserted inside a support disk (11) of a spring-holder device; the circular crown (2) is equipped in its central part with a ring (4) in turn equipped with a central through hole (3) adapted to allow the passage of the winding shaft (14) of the rolling gates and rolling shutters, and is equipped with at least one holding member (7) adapted to hold the revolving member (1) against the support disk (11).</p> |
