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Over the years, the bicycle industry has created numerous bottom bracket standards. Unfortunately, the industry has not been clear and consistent when creating terms and names for them, sometimes creating several names for the same bottom bracket standard. This article will review the many bottom bracket standards on bicycles.
This article will assist with bottom bracket standard identification. This will be needed when you begin servicing or repairing the bottom bracket.
A review of how to remove and install a thread-together bottom bracket, also referred to as thread-thru bottom brackets.
This article will review how to remove and install bottom brackets for Campagnolo® and Fulcrum® Ultra-Torque® cranksets. The service requires the use of the CBP-8 Campagnolo® Crank and Bearing Tool Set.
This article will discuss how to remove and install bottom brackets used in threaded shells, including three-piece cranks, threaded "thru-spindle" external bearing cups, and bottom brackets used in T47 shells. Adjustable cup-and-cone threaded bottom brackets are reviewed in Bottom Bracket Service: Adjustable Cup-and-Cone.
The bottom bracket is the interface between the frame and the cranks. With use, the bearing will require service and replacement. This article will review how to remove and install press fit bottom brackets, including: PF41 (BB86, BB92), PF42 (BB30, OSBB), PF46 (PF30), and Trek® BB90 & BB95.
This article will discuss how to service adjustable cup-and-cone style bottom bracket bearings.
This article will discuss how to adjust bottom bracket bearing preload on systems using preload rings.
There are many different brands and models of bottom brackets as well as many variations on tool fittings for their service. This article will review the selection of Park Tool options for various bottom bracket systems in threaded frame shells and for thread-thru bottom brackets. For a review of the various bottom bracket standards, see Bottom Bracket Standards and Terminology.
To find the proper tool based on make and model, see: Bottom Bracket Tool Finder
This article will review the selection of Park Tool options for various press fit bottom bracket systems. For service procedures see Press Fit Bottom Bracket Removal and Installation. For a review of the various bottom bracket standards, see Bottom Bracket Standards and Terminology.