What Do The Trailer Axles Do?

While bumper-pull trailers are powered by the tow vehicle, they still contain many of the same vital components of a motorized vehicle. One of those components that makes the wheels go round and round is the axle. In this article, we’ll explain what trailer axles do and why they’re essential for safe hauling.

What is a Trailer Axle?

A trailer axle is a vital structural element that connects the wheels of a trailer, supporting its weight, load, and any additional gear. The axle is a shaft positioned beneath the trailer frame, which allows the wheels to rotate freely. It is an important part of the trailer’s suspension system, which includes springs and shock absorbers. The trailer system works in tandem with the axle to provide a smooth ride, absorb road shocks, enhance stability, and maintain overall control!

Essential Components of Trailer Axles

Like any mechanical system, axles comprise of several components:

Axle Beam

The beam is the main body of the axle. It spans the the distance between the wheels. It is designed to withstand heavy loads (up to its gross vehicle weight rating or GVWR) and is constructed from robust materials to handle the stresses of carrying full loads on the road.

Wheel Hubs

Wheel hubs are where the wheels mount. They are attached to the ends of the axle beam and usually feature bearings that allow the wheels to rotate smoothly.

Spindles

The spindles connect the wheel hubs to the axle. They play a crucial role in supporting the trailer’s weight while allowing wheel movement.

Suspension System

The suspension system includes springs and shock absorbers that work with the axle to provide a smooth ride, absorb road shocks, enhance stability, and maintain overall control.

Brake Assemblies

Many trailers utilize electric or hydraulic brakes that interact with the axles. These brakes work to enhance safety by allowing for efficient stopping.

Types of Axles

Trailer axles aren’t a one-size-fits-all component. Different types of axles are for specific applications and load capacities:

• Straight Axles consist of a single, solid beam extending across the trailer. They are robust and commonly used in utility trailers, equipment trailers, and light-duty applications.
• Torsion Axles use rubber cords or torsion bars inside a square tube to provide suspension. They offer a smooth ride and independent wheel suspension, making them ideal for trailers carrying a variety of payloads.
• Spring Axles use leaf or coil springs to absorb shocks and provide a more comfortable ride. They are more common in heavy-duty trailers and those built for rough terrain.
• Dexter Axles are a standard feature on Bigfoot trailers. They incorporate braking systems that work with the tow vehicle’s braking system, enhancing safety and control. Dexter is a premium brand known for its quality and durability. 

Trailer axles are fundamental for the functionality and safety of any trailer. They facilitate wheel movement, load support, and contribute to overall stability and control on the road. Understanding the components and types of trailer axles is a must when maintaining a trailer. This knowledge helps you ensure safer and more productive hauls.

Where to Buy Bumper Pull Trailers 

Bigfoot delivers bumper pull trailers handcrafted in the USA! We make purchasing easy with financing and rent-to-own options. As a factory-direct manufacturer, we provide service in the entire Eastern United States with locations in Baltimore, MD; Boston, MA; Jonesboro, GA; Richmond, VA; and by appointment with retailers in Fort Myers and Marianna, FL. Contact us for a free quote.