Short overview of threadless BB (press fit) standards

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

Updated: 16/11/2018. 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 Short overview of threadless BB (press fit) standards

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 New threaded BB standard: T47

Bottom brackets [02] Threadless – press fit BBs

Threadless (press-fit) bottom bracket (BB) standards

Updated: 16/11/2018. For basic terms explanation and history of BBs, as well as threaded BB standards, read this article: Bottom bracket standards – 1st part. BBs with press fit (threadless) cups usually use cranksets with the spindle (axle) attached to the right crank arm. For installing, and especially for replacing, BB cups, special, expensive tools … Read more Bottom brackets [02] Threadless – press fit BBs

Bottom brackets [01] Threaded BBs

Threaded bicycle bottom bracket (BB) standards

Updated: 25/11/2018. 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.   1. … Read more Bottom brackets [01] Threaded BBs