| 摘要 |
<p>A disc brake system comprises a disc (12), and a hub (16). The system also comprises mounting means by which the disc (12) is mounted on the hub (16) so that the hub and the disc rotate as a unit about an axis (18) and the disc can perform axial sliding movement on said hub. The mounting means comprises a plurality of rollers (34) each of which has its axis arranged substantially parallel to said axis (18) of the hub (16). Each roller (34) is received in a pocket (24, 32) defined partly by said hub and partly by said disc so that the rollers transmit rotational drive between the hub and the disc and also provide bearing surfaces for said sliding movement. At least one of said rollers (34) is keyed to said disc (12) so that the roller slides with the disc on the hub and the disc acts to retain said roller in its pocket.</p> |
