7 Essential Steps to Mastering Bicycle Rear Wheel Hub Assembly


The bicycle rear wheel hub assembly, a vital component of a bicycle, is responsible for maintaining stability, balance, and ensuring the bicycle functions seamlessly. Comprehending its purpose and mastering the assembly process can significantly enhance your cycling journey.

bicycle rear wheel hub assembly

Demystifying the Bicycle Rear Wheel Hub

The heart of the wheel’s rotational system, the bicycle rear wheel hub, brings together the axle, bearings, and hub shell for smooth and effortless wheel rotation.

Decoding the Bicycle Rear Wheel Hub Components

The axle, bearings, hub shell, freewheel or cassette body, and locknuts are the primary elements of a bicycle rear wheel hub, each playing a crucial role in its functionality.

Learn more about the bicycle wheel here.


The axle, a rod that passes through the hub and connects to the bicycle frame, supports the bicycle’s weight and ensures the wheel’s rotation around it.


Bearings enable the wheel to rotate smoothly around the axle, minimizing friction and maximizing wheel efficiency.

Hub Shell

The hub shell serves as a housing for the axle and bearings and features flanges for attaching spokes.

Freewheel or Cassette Body

The freewheel or cassette body, a mechanism that allows the wheel to coast without moving the pedals.


Locknuts hold the hub assembly together by keeping all parts in place and adjusting bearing tension.

Mastering Bicycle Rear Wheel Hub Assembly: A 7-Step Guide

Step 1: Preparation

Before you start assembling your bicycle rear wheel hub, ensure you have all necessary parts like an axle, bearings, hub shell, freewheel or cassette body, locknuts, and appropriate tools.

Step 2: Bearing Installation

Install bearings into both sides of the hub shell. Apply grease to hold them in place and minimize friction.

Step 3: Axle Insertion

Insert the axle through one side of the hub shell, passing it through the bearings.

Step 4: Additional Bearing Installation

Apply grease to the other end of the axle and install additional bearings.

Step 5: Locknut Application

Apply locknuts onto both ends of the axle to secure all components.

Step 6: Freewheel or Cassette Body Attachment

Connect the freewheel or cassette body to the hub shell, ensuring it spins freely in one direction and locks in the opposite direction.

Step 7: Maintenance

Regular maintenance of your bicycle rear wheel hub assembly can extend its lifespan and ensure a smooth ride. This maintenance includes cleaning, lubricating, and occasionally replacing worn-out parts.

Check out our comprehensive guide to bike brake line maintenance, installation, and more for further reading.


The bicycle rear wheel hub assembly is instrumental in ensuring a smooth, efficient cycling experience. By understanding its components and following this 7-step guide, you can confidently assemble and maintain your bicycle rear wheel hub assembly.

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