Cartridge or Sealed

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Revision as of 23:44, 17 July 2007 by Lacey (talk | contribs)
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All the moving parts are housed within the tubing of a sealed bottom bracket, making them relatively easy to install, but basically impossible to repair. If the axle does not move freely or experiences up and down play, the whole bottom bracket needs replacing.

On a sealed bottom bracket, there is one free cup (which can be removed from the rest of the bracket) and one fixed cup, which is truly fixed in this case. The fixed cup is reverse threaded.

Installations: Install the fixed cup first, into the chain ring side of the bike. Remember is reverse threaded. It should go in as tightly as possible. Install the free cup second on the opposite side of the bike. In the case of the sealed bottom bracket, the free cup should also be on as tightly as possible. The threading on the free cup should be "righty tighty."