Bicycle Hubs

Bicycle Hubs

A bicycle hub is the central component of a bicycle wheel that connects the spokes to the rim and allows the wheel to rotate around the axle. It is typically made of metal and consists of an axle, bearings, and a shell. The axle is the central shaft that runs through the hub and attaches to the dropouts on the frame. The bearings are the small metal balls that allow the axle to rotate smoothly within the hub shell. The hub shell is the outermost part of the hub that houses the bearings and provides a mounting point for the spokes and rim. Bicycle hubs come in a variety of styles and designs, each with its own advantages and disadvantages. The most common types of hubs are freewheel hubs and cassette hubs. Freewheel hubs are older and simpler in design, with the freewheel mechanism built into the hub itself. Cassette hubs, on the other hand, have a separate cassette that attaches to the hub and contains the freewheel mechanism. Cassette hubs are generally considered to be more durable and easier to maintain than freewheel hubs. Another important consideration when choosing a bicycle hub is the number of spoke holes. Most hubs have either 32 or 36 spoke holes, although some high-end hubs may have fewer. The number of spoke holes determines the number of spokes that can be used in the wheel, which in turn affects the strength and stiffness of the wheel. Overall, the bicycle hub is a critical component of any bicycle wheel, and choosing the right hub can have a significant impact on the performance and durability of the bike.

axle, bearings, hub shell, freewheel, cassette

— John Hall