how to fit a bottom bracket

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  • What is a bottom bracket?

  • Some bottom brackets feature a spindle integrated into the bearings as a self-contained unit. These are commonly referred to as cartridge-style bottom brackets. Threaded ends or cups hold the unit secure in the frame shell.

  • How do you install a pressfit bottom bracket?

  • The most important part of installing a pressfit bottom bracket is actually two parts. You want to have the correct bearing race if possible, so if you have a 30mm spindle try to have a race that also has a 30mm spindle cup on there. Secondly, only press in one cup at a time.

  • Where are the bearings on a bottom bracket?

  • It sits inside the part of the frame called the bottom bracket shell. The bearings are held in the shell by an adaptor or a cup. The spindle connects the two cranks to one another and to the bearings. In order to service the bottom bracket system, it is necessary to know what type it is.

  • What is the bottom bracket on a bike called?

  • It sits inside the part of the frame called the bottom bracket shell. The bearings are held in the shell by an adaptor or a cup. The spindle connects the two cranks to one another and to the bearings.

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