The Definitive Guide to 7x20 Double Axle Diamond Cargo Trailers

The Definitive Guide to 7×20 Double Axle Diamond Cargo Trailers

When the need arises to transport valuable equipment, inventory, or recreational vehicles, the choice of trailer is paramount. It’s not just about moving items from one point to another; it’s about doing so securely, efficiently, and with confidence. The 7×20 double axle enclosed cargo trailer from Diamond Cargo has emerged as a leading solution for professionals and enthusiasts alike, offering a perfect blend of size, strength, and versatility. This guide will explore every facet of this exceptional hauling companion.

Welcome to the Definitive Guide

This article provides a comprehensive overview of the 7×20 double axle Diamond Cargo trailer. We will deconstruct its specifications, explore its core advantages, and demonstrate why it stands as a superior choice for a wide range of applications. Whether you are a contractor, a powersports enthusiast, or in need of a reliable general transport solution, this guide will equip you with the knowledge to make an informed decision.

Why a 7×20 Double Axle Diamond Cargo Trailer?

The 7×20 size hits a sweet spot in the world of cargo trailers. It’s large enough to accommodate substantial loads—from landscaping equipment and construction materials to multiple motorcycles or a small vehicle—yet it remains maneuverable for its class. The addition of a double axle (also known as a tandem axle) transforms it from a simple container into a stable, high-capacity hauling platform, ensuring safety and stability on the road.

The Diamond Cargo Advantage: A Legacy of Quality

Diamond Cargo has built a reputation for producing durable and reliable enclosed cargo trailers. Their commitment to quality materials, robust construction techniques, and practical design means that every unit is built to withstand the rigors of daily use. Choosing Diamond Cargo is an investment in a piece of equipment designed for longevity and dependable performance.

What This Guide Will Cover

We will begin by breaking down the “7×20 double axle” configuration to explain what makes it so effective. We will then dive into the specific features and construction details that define a Diamond Cargo trailer, from its frame to its electrical system. Finally, we’ll cover customization options, ideal applications, and why this specific model is a top-tier investment for your hauling needs.

Understanding the 7×20 Double Axle Configuration

The designation “7×20 Double Axle” is more than just a name; it’s a precise description of the trailer’s core attributes. Each component of this title—the dimensions, the axle setup, and the enclosed design—contributes to its overall capability and purpose.

The Significance of “7×20” – Dimensions Explained

The “7×20” refers to the interior box dimensions: approximately 7 feet wide by 20 feet long. This substantial size provides a generous volume for a variety of cargo. The 7-foot width is ideal for accommodating wider items like UTVs, small cars, or palletized goods, while the 20-foot length offers ample space for multiple items or long materials. This specific size is popular because it offers significant capacity without becoming excessively cumbersome to tow or park.

The Power of the Double (Tandem) Axle

The most critical feature for a trailer of this size is its tandem axle configuration. A tandem axle design uses two axles placed in close proximity to one another, which means the trailer has four wheels and tires instead of two. This setup is fundamental to its performance, distributing the weight of the cargo across a wider base. This distribution dramatically improves towing stability, reduces sway at highway speeds, and enhances braking effectiveness.

Why Double Axles are Crucial for This Size Trailer

For a 20-foot enclosed trailer, a single axle would be insufficient and unsafe. The Gross Vehicle Weight Rating (GVWR)—the maximum total weight of the trailer and its cargo—of a 7×20 model typically requires two axles. Each axle has its own weight capacity (often 3,500 lbs or 5,200 lbs each), and combining two provides the necessary load-bearing strength. Furthermore, the tandem axle design provides a crucial safety redundancy; in the event of a tire blowout, the second tire on that side can support the load temporarily, allowing the driver to pull over safely.

The Core Purpose: Enclosed Cargo Protection

The “enclosed” aspect of this cargo trailer is its defining purpose. Unlike an open utility trailer, an enclosed model provides complete protection from the elements, safeguarding valuable cargo from rain, sun, snow, and road debris. More importantly, it offers a high level of security. The solid walls and lockable doors act as a significant deterrent to theft, giving owners peace of mind that their equipment is safe, whether parked for the day at a job site or overnight.

Key Features and Specifications of a Diamond Cargo 7×20 Trailer

Diamond Cargo trailers are distinguished by their high-quality components and thoughtful engineering. A close examination of their standard features reveals a commitment to durability, user-friendliness, and safety.

Robust Exterior Build and Materials

The foundation of a Diamond Cargo trailer is its sturdy steel tube main frame. The walls and ceiling are also constructed with steel tube members, providing a rigid skeleton. The exterior is typically clad in a durable material like .080 Polycore or aluminum, often applied with minimal screws for a clean look and fewer potential leak points. A V-nose front is a common feature, improving aerodynamics for better fuel economy and providing extra interior space. Diamond plate stone guards on the front protect the trailer from rock chips and road debris.

Access and Security: Doors and Locks

Standard access includes a 36-inch side door with a secure RV-style flush lock, making it easy to get in and out without opening the main rear entrance. For loading cargo, buyers can typically choose between two options: a spring-assisted rear ramp door for easily driving in wheeled equipment, or double barn doors that swing open wide for forklift access. Both options are designed for heavy use and feature robust locking mechanisms.

Illumination and Connectivity

Modern safety standards demand excellent visibility. Diamond Cargo trailers come standard with a full package of brilliant LED lights, including tail lights, brake lights, and side marker lights. These LED lights are brighter, last longer, and draw less power than traditional incandescent bulbs. The trailer connects to the tow vehicle via a standard 7-way round Bargman plug, which powers all the lights and, crucially, the electric brakes on the axles.

Running Gear: Axles, Wheels, and Tires

The running gear is the heart of the trailer’s performance. Diamond Cargo 7×20 trailers are equipped with two high-quality leaf spring axles, typically rated at 3,500 lbs each, for a combined 7,000 lb GVWR. These axles feature EZ Lube Hubs for simplified maintenance. The trailer rides on sturdy steel wheels fitted with high-quality Radial Tires. Radial Tires are superior to older bias-ply types as they run cooler, have a longer tread life, and provide a smoother, more stable ride.

Interior Comfort and Utility

Inside, the trailer is designed for functionality. The floor is made of 3/4″ thick plywood, strong enough to handle heavy, concentrated loads. The interior walls are typically finished with 3/8″ plywood, providing a durable surface for securing items. A 12-volt dome light provides interior illumination, and sidewall vents help to circulate air, preventing the buildup of fumes or moisture.

The Diamond Cargo Difference: Unmatched Quality and Craftsmanship

In a competitive market, Diamond Cargo distinguishes itself by focusing on superior construction standards and including features that other manufacturers often list as expensive upgrades.

The Manufacturer’s Commitment to Excellence

Diamond Cargo’s manufacturing process prioritizes structural integrity. By using steel tube framing for the walls and ceiling—not just the main rails—they create a stronger, more rigid box that resists flexing and torsion. This commitment extends to the details, such as using quality fasteners and ensuring proper sealant application, which contributes to a longer-lasting, weather-resistant enclosed trailer.

Standard Features that Exceed Expectations

Many of the features detailed above come standard on a Diamond Cargo 7×20 trailer. The inclusion of Radial Tires, a full LED lighting package, a robust side door, and tube wall construction as standard equipment provides immediate value. This approach simplifies the purchasing process and ensures that every customer receives a high-quality, safe, and durable trailer without needing an extensive list of add-ons.

Why Diamond Cargo is an Investment, Not Just a Purchase

Purchasing a trailer of this caliber should be viewed as a long-term investment. The superior build quality of a Diamond Cargo trailer means it will hold its value better over time. It requires less frequent repairs and can withstand more demanding use, leading to a lower total cost of ownership. For a business, this reliability translates directly to less downtime and greater productivity throughout the day.

Customization Options: Tailoring Your Trailer to Your Needs

While the standard Diamond Cargo 7×20 is exceptionally capable, one of its greatest strengths is the ability to customize it for specific applications.

Popular Custom Options and Upgrades

Owners can tailor their trailers with a wide range of options. Popular upgrades include increasing the interior height for more vertical clearance, upgrading to higher-capacity axles (e.g., two 5,200 lb axles for a 10,000 lb GVWR), and adding extra D-rings or E-track systems for more versatile cargo securing. A Spare Tire Mount with a matching spare is a highly recommended addition for road trip security. Other options include custom shelving, electrical packages, and upgraded flooring materials.

Designing Your Custom Trailer: From Concept to Completion

The customization process typically involves working with a dealer to specify your exact needs. You can choose exterior colors, add windows or extra vents, specify the placement of doors, and design an interior layout that functions as a mobile workshop or a dedicated powersports hauler. This level of personalization ensures the final product perfectly matches your intended use.

The Impact of Customization on Functionality and Investment Value

Thoughtful customization can dramatically enhance the trailer’s functionality. For a contractor, adding built-in toolboxes and ladder racks transforms the trailer into an organized, efficient mobile workspace. For a race team, insulated walls and an electrical package create a comfortable track-day headquarters. These value-added features not only improve usability but can also increase the trailer’s resale value, making them a wise investment.

Ideal Applications for Your 7×20 Double Axle Diamond Cargo Trailer

The versatility of the 7×20 size and tandem axle strength makes it suitable for a vast array of hauling tasks.

For the Professional Contractor: A Mobile Workshop

Landscapers, electricians, plumbers, and general contractors find the 7×20 invaluable. It’s large enough to securely store all necessary tools, equipment like zero-turn mowers or concrete saws, and materials for the day’s job. With custom shelving, it becomes a rolling workshop, keeping everything organized and protected from theft and weather.

Enthusiast’s Dream: Secure Motorcycle Trailers and Recreational Gear Hauling

This enclosed cargo trailer is a perfect solution for powersports enthusiasts. It can comfortably and securely haul multiple motorcycles, ATVs, or a side-by-side (UTV). The ramp door makes loading and unloading simple, and the enclosed space allows for the secure transport of associated gear, tools, and spare parts.

General Cargo Transport: Moving Goods Safely and Efficiently

For small businesses, moving companies, or individuals with regular hauling needs, the 7×20 offers a reliable solution. It can be used for delivering products, moving furniture, or transporting large, delicate items that require protection. The secure, weatherproof environment ensures any cargo arrives in perfect condition.

Real-World Examples and Sample Photos of Versatile Use

A quick search for these trailers in action will show them configured in countless ways: as mobile command centers for event companies, as transport for classic cars to shows, outfitted for mobile pet grooming businesses, and as simple, effective moving trailers. Their robust and adaptable platform makes them a true multi-purpose tool.

Conclusion

The 7×20 Double Axle Diamond Cargo Trailer represents a pinnacle of utility, durability, and value in the world of enclosed trailers. Its ideal size offers substantial cargo capacity without being overly difficult to manage, while the tandem axle configuration provides the critical stability and safety required for heavy loads. Diamond Cargo’s commitment to quality construction and a rich set of standard features ensures that owners receive a product ready for demanding work from day one.

By understanding the core components—from the robust frame and Radial Tires to the essential LED lights and 7-way plug—you can appreciate the thoughtful engineering that goes into each unit. Whether you are a professional seeking to enhance your business operations, an enthusiast protecting your prized possessions, or anyone in need of a reliable hauling solution, this trailer is an investment that pays dividends in performance and peace of mind. When considering your next trailer purchase, exploring the sales options for a Diamond Cargo 7×20 is a definitive step toward acquiring a capable and lasting asset.