Bottom Bracket Shell

Bottom Bracket Shell

Baw-tuhm Brak-it Shel

Noun, Noun

Bottom Bracket Shell is the part of the bicycle frame which houses the bottom bracket bearings.

Example usage: I need to replace the bottom bracket shell on my bike.

Most used in: Cycling circles in Europe and North America.

Most used by: Professional and amateur cyclists.

Popularity: 8/10

Comedy Value: 3/10

Also see: BB Shell, Bottom Bracket Housing, Bottom Bracket Cup, Bottom Bracket Shell,

What is a Bottom Bracket Shell?

The bottom bracket shell is an essential component of a bicycle frame. It is the hollow hole located in the bottom of the frame that houses the axle, bearings and spindle for the crankset. The bottom bracket shell is typically made from metal, such as aluminum or steel, and usually has a threaded design.

The bottom bracket shell is a critical component for the performance of the bike. It provides the structural integrity to the frame and ensures that all components of the drivetrain are securely fastened to the frame. It also provides an area for the bottom bracket bearings to be located, which are necessary for the smooth operation of the crankset.

The bottom bracket shell is an important part of the bicycle and is available in a variety of sizes and shapes. The most common sizes are 68mm, 73mm and 83mm. The shape of the bottom bracket shell can vary depending on the type of frame and the type of crankset used. For example, a road frame might have a wider bottom bracket shell than a mountain bike frame.

The bottom bracket shell is an integral part of the bicycle frame, and it is important to select the right size and shape for your bike. According to Statista, in 2020, the market size of bicycles in the United States was estimated to be around 6.7 billion US dollars.

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The History of the Bottom Bracket Shell

The phrase 'bottom bracket shell' is a term used in the cycling industry to refer to the part of the bicycle frame that houses the axle and bearings. It is typically made from metal, and is a crucial part of the frame that allows the crankset to rotate.

The term first appeared in the early 1900s, when bicycles were first becoming a popular means of transportation in the United Kingdom. At the time, the bottom bracket shell was made from steel, and was a key component of the frame's structural integrity. As bicycle technology advanced, the bottom bracket shell evolved to become lighter and more durable.

Today, the bottom bracket shell is an integral part of modern bike frames. It is typically made from aluminum or carbon fiber, and is designed to provide a secure and stable connection between the crankset and the frame. It is an essential part of any bicycle, and its importance cannot be overstated.

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