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Short overview of threadless BB (press fit) standards

Standards of threadless bottom bracket bearings (press-fit BB standards)

Updated: 09/09/2020. This post will give a short overview (list) of threadless (press fit) BB standards. For each BB standard there is an overview intersection of BB cartridge and frame’s BB shell where BB is inserted to, followed by it’s dimensions. Look here for explanation of all the different BB standards. BB30 Shell width: 68 … Read more

Home » Keyword: "bb"

New threaded BB standard: T47

T47 bottom bracket standard, also known as Thread Fit 30i BB standard

Updated: 16/11/2018. This post explains threaded T47 bottom bracket (BB) standard. Look here for explanation of all the other BB standards.   1. Description of T47 standard T47 is a modern standard with BB cartridges screwed into the frame BB shell threads. Developed by Chris King and Argonaut Cycles companies. Announced in 2015, also known … Read more

Home » Keyword: "bb"

Bottom brackets [01] Threaded BBs

Threaded bicycle bottom bracket (BB) standards

Updated: 30/03/2021. This post will explain bicycle bottom bracket standards. It is the first in the series of posts on the subject, explaining basic terms, then each standard. Most threaded standards are explained, while a separate post explains press-fit (threadless) bottom brackets. The last post will address BB and crankset compatibility and interchangeability. Contents: What … Read more