COLLAR FOR A BICYCLE

The present invention relates to a hub for a bicycle with a hub axle, a hub sleeve that is rotatably mounted on the hub axle via a bearing arrangement, a driver that is rotatably mounted on the hub axle via a bearing arrangement and can be coupled to the at least one hub sleeve in a torque-transmitting manner, wherein the bearing arrangement has at least one axially inner bearing and at least one axially outer bearing. According to the invention, it is provided that at least one fastening element is provided which fixes at least the inner bearing of the bearing arrangement in its predetermined position on the hub axle by means of a local or sectional enlargement of the cross-section of the hub axle.