| 摘要 |
<p>A hub (102) is disclosed for supporting and retaining at least one surface conditioning article (103) relative to and spaced apart from a rotary shaft. The hub may be a hub of a brush assembly. The hub includes an arbor (108) tube and a pair of plates (104, 106). Shoulders (129, 131) are provided on the arbor tube and the plates are coupled to the arbor tube at a pre-determined distance set by shoulders. The surface conditioning article is provided between the plates. Since the distance between the plates is set by the shoulders, the density of the surface conditioning article between the face plates also is predetermined. The plates may include a key-shaped region with a circular portion and a keyseat. An adapter (212, 214) also may be provided. The adapter is configured and dimensioned to be engaged in the key-shaped region, permitting a shaft having a smaller diameter to be coupled to the hub.</p> |
