| 摘要 |
A bearing (1) is disclosed which is made of self-lubricating material and is adapted to be used as rolling means of spring-holder boxes on a winding shaft for rolling gates and rolling shutters, such bearing (1) being a ring equipped with a central through-hole (3) adapted to allow the winding shaft of rolling gates and rolling shutters to pass therethrough; a spring-holder device (10) is further disclosed for rolling gates and rolling shutters comprising at least two supporting disks (11), each one of such supporting disks (11) being equipped at its own center with a through-hole (12), adapted to allow a winding shaft to pass therethrough, and with a housing seat of the bearing (1) that is concentric to the through-hole (12), and with a plurality of spacers adapted to mirror-like connect and to mutually space the supporting disks (11). |
