| 摘要 |
A bicycle rear derailleur includes a base member, a movable member and a linkage assembly. The base member is configured to be attached to a bicycle frame. The movable member has a chain guide portion. The linkage assembly is coupled between the base member and the movable member to move the chain guide portion between a retracted position and an extended position. Preferably, at least one of the base member and the movable member are pivotal relative to an axle that includes a tubular sleeve member having a grease receiving opening that extends between an exterior surface and an interior surface. Also, preferably, the linkage assembly includes at least one pivot pin interconnecting a link to one of the base member and the movable member with the pivot pin having a grease fillable recess formed therein that extends in a circumferential direction
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