| 摘要 |
A journal for a head tube of a bicycle includes a lower race fitted on an upper end of the head tube through which a steerer tube extends, the lower race having a first annular recess defined therein for receiving a plurality of balls. An upper race is securely mounted on the steerer tube and an annular element is securely disposed between the balls and the lower race. The annular element has a skirt portion extending radially outwardly from an outer periphery thereof which extends above the lower race and a track portion formed on an inner periphery thereof for rotatably receiving the balls therein.
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