Cargo Trailer with Side Opening

Video of henred type sidewall trailer

1. What is a drop-side trailer, and what makes it different from a flatbed trailer?
A drop side trailer, also known as a side wall trailer or sideboard semi-trailer, is a type of semi-trailer characterized by its removable or collapsible side panels. The primary difference from a standard flatbed is its enhanced versatility. While a flatbed trailer is only suitable for carrying large, single items that can be strapped down, a drop-side trailer can easily be converted. With the side walls and tailgate in place, it can securely transport bulk cargo like bags of cement, grain, or sand. By dropping or removing the side walls, it transforms into a flatbed trailer, allowing for the easy loading and transport of oversized goods and equipment from the side. This versatility makes the drop side semi-trailer a highly adaptable asset for a wide range of industries.

2. What types of cargo are best suited for a drop-side trailer?
The design of a drop-side trailer makes it ideal for a diverse range of cargo types, especially those that benefit from containment during transport. It is best suited for:
Bulk Cargo: Items like sacks of grain, fertilizer, or cement, where the side walls prevent the load from shifting or falling off.
Construction Materials: Pallets of bricks, stones, steel bars, or bagged materials that need to be contained but also require easy access for loading and unloading with a forklift from the side.
General Freight: Assorted goods, boxes, and smaller equipment that are difficult to secure on a flatbed alone.
Agricultural Goods: Bales of hay or other farm produce can be stacked efficiently and contained by the side walls.
The drop side semi-trailer’s ability to transition between a contained and an open platform makes it a cost-effective solution for fleets that haul various types of goods.

3. What key features should I look for to ensure a drop-side trailer is durable and safe?
To ensure your drop-side trailer is durable and safe for the long term, you should pay close attention to its construction and components.
Frame Material: Look for a robust main frame built from high-tensile steel, which provides superior strength and resistance to bending under heavy and uneven loads.
Side Wall Construction: The side panels should be made of durable steel with strong, reliable locking mechanisms that prevent accidental release during transit. The taller the side walls, the more bulk cargo you can contain.
Axles and Suspension: A high-quality suspension system (e.g., a multi-leaf spring system) and reliable axles are crucial for handling heavy payloads and providing a stable ride.
Braking System: A modern braking system with ABS (Anti-lock Braking System) is essential for safety, providing superior control and preventing skidding in emergency situations.
These features ensure that the side wall trailer can withstand daily heavy use and provide a secure platform for your cargo.

4. Can a drop-side trailer be customized?
Yes, Drop Side Trailers are one of the most customizable types of semi-trailers. While standard models are available, they can often be tailored to meet specific operational needs. Common customization options include:
Side Wall Height: The height of the side walls can be adjusted to accommodate different types of bulk cargo.
Axle Configuration: You can choose the number of axles (e.g., 2-axle, 3-axle, 4-axle) based on your regional weight regulations and payload requirements.
Suspension Type: While mechanical spring suspension is common, you can opt for an air suspension system for a smoother ride, which is better for delicate cargo.
Material and Finish: The type of steel and the paint/coating can be customized for specific environmental conditions to enhance corrosion resistance and longevity.