| 摘要 |
<p>A sprocket (10) comprises a hub (11) and a teeth portion (14) attachable to the hub. The hub comprises an inner portion (12) having a generally U-shaped cross-section, and through which a bolt (17) or pin may be inserted. To tighten the hub on a shaft (16), a wedge (40) is inserted between a bolt (17) in the inner portion (21) and the shaft (16). The wedge comprises an inner surface (41) formed as a channel under flat outer surface (42). The channel lies at an angle relative to the flat surface (42).</p> |
