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A Comprehensive Guide to Trailer Parking Jacks for Beginners

Trailering can be a thrilling adventure, but getting your trailer parked securely is essential for a smooth journey. Parking jacks play a crucial role in this process, providing support and stability.

In this article, we'll explore the world of parking jacks, with a focus on two products from DNL – the DJS4001S and SJ1001T. These jacks are designed to cater to different trailer needs, offering a reliable solution for both heavy-duty and light trailers.

Understanding Parking Jacks

Parking jacks are indispensable tools for trailer owners, ensuring a stable foundation when your trailer is parked.


Trailer parking jacks can be categorized into 2 types based on the tube shapes: square tube and round tube.

  • Round tube jacks

With their cylindrical shape, they offer enhanced strength and stability due to the even distribution of loads. The smooth rotation of round tubes makes them user-friendly during the hitching and unhitching process, and some users often favour their classic aesthetic appeal.

  • Square tube jacks

Feature a more angular design, potentially making them less resistant to heavy loads. While their rotation might not be as smooth as round tube jacks, square tubes offer a modern or industrial appearance, and they may be more cost-effective to manufacture, depending on the materials.

Ultimately, the choice between these designs depends on individual preferences and the specific requirements of the trailer application.

Durability and Strength

Parking jacks are indispensable tools for trailer owners, ensuring a stable foundation when your trailer is parked. The primary distinction lies in the shape of the parking tubes, and it's important for beginners to grasp the differences. Let's delve into the unique features of two tube shapes offered by DNL.

  • Material Composition

Trailer parking jacks are constructed from either steel or aluminum, each material offering distinct advantages.

Steel parking jacks are prized for their exceptional strength and durability, capable of withstanding heavy loads without deformation. While steel is denser, resulting in heavier jacks, protective coatings like zinc or powder coating are often applied to enhance corrosion resistance.

On the other hand, aluminum parking jacks are lighter due to the material's lower density, contributing to overall trailer weight reduction and improved towing efficiency. Aluminum's inherent corrosion resistance makes it well-suited for environments where rust is a concern, although these jacks might have weight limitations compared to their steel counterparts.

The choice between steel and aluminum depends on factors such as load requirements, application specifics, and the importance of weight considerations.

  • Stress Distribution

Proper stress distribution is essential to prevent concentrated stress points that could lead to failure. Engineers design parking jacks to distribute loads evenly, minimizing stress concentrations. This involves considering the geometry of the jack, load distribution, and material properties. Stress analysis techniques, such as finite element analysis (FEA), are often used to simulate and optimize the stress distribution in different parts of the jack.

Stability and Weight Capacity

The shape of the tube significantly influences a jack's stability, especially on uneven ground. DNL's diverse tube designs cater to various stability requirements, accommodating trailers of different weights and sizes. This ensures a stable foundation for parking, regardless of the terrain.

  • Base Design

The design of the base is critical for the stability of trailer parking jacks. A wider and well-designed base provides better stability by distributing the load over a larger area. Triangular or square-shaped bases are common designs, and they help prevent tipping or sinking into soft surfaces. Some trailer jacks also come with swivelling or retractable bases, allowing for easy storage and maneuverability.

  • Weight Support

The weight capacity of a trailer parking jack indicates the maximum load it can safely support. The weight support is influenced by the materials used in construction, the design of load-bearing components, and the overall engineering of the jack. Engineers consider factors such as the tensile and yield strength of materials, the structural integrity of critical components, and the overall design to determine the weight capacity.

Usability and Adaptability

Trailer parking jacks are versatile tools that enhance the usability of trailers by providing stability and support. They facilitate the hitching and unhitching process, adapt to uneven terrain, and offer adjustable heights for different trailer sizes. DNL’s trailer parking jacks are compatible with different trailers and feature user-friendly designs, making them essential for safely parking and maneuvering trailers in diverse settings.

Considerations for Selecting Parking Jacks

When it comes to selecting the right parking jack for your trailer, there are several crucial considerations to keep in mind. DNL offers a diverse range of options to cater to varying needs.

  • Types of Parking Jacks

DNL provides a selection of parking jacks, each with its own unique mechanism. Understanding the types available—rack and pinion jacks, screw jacks, hydraulic jacks, and pneumatic jacks—allows trailer owners to choose the technology that aligns best with their preferences and operational requirements.

  • Parking Jacks with or Without Wheels

The mobility of your parking jack can be a deciding factor. DNL offers options with and without wheels, providing flexibility based on your trailer's specific usage scenarios. Wheels can be advantageous for easy maneuverability, especially when parking in confined spaces.

  • Load-Bearing Capacity

The load-bearing capacity of a parking jack is paramount for ensuring the stability and safety of your trailer. DNL's products are designed to accommodate a range of load capacities, allowing users to match the jack's strength with the weight of their trailers. This consideration is crucial for preventing overloading and ensuring optimal performance.

Recommended DNL Parking Jacks

For heavy-duty trailers, the DJS4001S stands out as a reliable choice as a trailer parts manufacturer and supplier. Its robust construction and advanced features make it well-suited for trailers carrying substantial loads.

On the other hand, the SJ1001T is recommended for light trailers, providing efficient support without unnecessary bulk. Both options from DNL offer durability, stability, and user-friendly features.

Benefits of the Products

DJS4001S for Heavy Duty Trailers

  • Robust Construction Engineered for heavy loads and durability. It boasts a load capacity of 4000kg.
  • Smooth Operation: easy raising and lowering for enhanced user experience.
  • Adaptability: suitable for various terrains and environmental conditions.

DJS4001S for Heavy Duty Trailers

SJ1001T for Light Trailers

  • Lightweight Design: Ideal for trailers with lighter loads, with a load capacity of 1000kg.
  • Compact and Easy to Store. Convenient for trailers with limited space.
  • Stability Ensures a secure foundation for light trailers.

SJ1001T for Light Trailers


DNL's commitment to diversity in trailer parks and accessories. The nuanced differences in trailer parts manufacturing manifest in their applications.

DNL's dedication to high quality, innovation, punctual delivery, and reliable warranty underscores their commitment to customer satisfaction. Contact us for more information about DNL.


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