We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Are the Different Rear Axle Parts?

Dan Cavallari
By
Updated May 23, 2024
Our promise to you
WikiMotors is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WikiMotors, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Rear axle parts can vary depending on the type of axle being used. Sometimes the axle situated at the rear of a vehicle is used as part of the drive system, while in other cases it is a dead axle, or one that does not drive the vehicle forward but instead simply helps support the weight of the car or truck. Some rear axle parts are fairly universal, however, as just about all axles will feature an axle housing as well as a spindle within that housing to allow the wheels to spin freely.

Drive components are rear axle parts that transfer power from the drive shaft to the wheels. This is usually done using a unit known as the rear differential. Several gears are mounted within the differential casing: one gear is attached to the drive shaft, which is situated perpendicular to the axle itself; the two axle shafts meet the drive shaft's gear within the differential housing, and they are subsequently spun by the drive gear. Each axle goes in a different direction: one reaches the left wheel, and the other reaches the right wheel. Each spindle and gear is contained within the axle housing to protect the rear axle parts from dirt, grime, and other potential sources of damage. Many other components may be contained within the differential housing, depending on the make and model of the unit and the added features of the vehicle.

Depending on the design, sometimes rear axle parts include bearings as well. These bearings usually surround the axle shaft itself and promote free movement of the shaft within the housing. This function allows the wheels to spin freely and prevents drag in the drive system. The bearings are usually located at either end of the axle, though the specific position can vary significantly depending on the axle's design. If the unit is a dead axle, it may be connected to the chassis of the vehicle by using U-bolts, which are heavy-duty bolts that wrap around the axle housing.

Some types of axles will feature more rear axle parts for specific functions. A portal axle, for example, is a unique system that raises the axle itself above the centerline of the wheels. This means the axle is farther off the ground than normal, giving the vehicle more clearance. These are usually used on off-road vehicles, and while they are very useful, the design means more components will be necessary at either end of the axle so torque can be transmitted to the wheels. Bearings and drive systems are often part of these axles.

WikiMotors is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Dan Cavallari
By Dan Cavallari
Dan Cavallari, a talented writer, editor, and project manager, crafts high-quality, engaging, and informative content for various outlets and brands. With a degree in English and certifications in project management, he brings his passion for storytelling and project management expertise to his work, launching and growing successful media projects. His ability to understand and communicate complex topics effectively makes him a valuable asset to any content creation team.
Discussion Comments
Dan Cavallari
Dan Cavallari
Dan Cavallari, a talented writer, editor, and project manager, crafts high-quality, engaging, and informative content for various outlets and brands. With a degree in English and certifications in project management, he brings his passion for storytelling and project management expertise to his work, launching and growing successful media projects. His ability to understand and communicate complex topics effectively makes him a valuable asset to any content creation team.
WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.

WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.