lowbed trailer
Explore our durable lowbed trailers, from 2-axle to multi-axle configurations, including RGNs. Engineered with ultra-low decks and robust frames, our lowboy trailers ensure safe, compliant hauling for your heaviest machinery.
What is lowbed trailer？
A lowbed trailer, also commonly known as a lowboy trailer or heavy haul trailer, is a highly specialized semi-trailer designed for transporting extremely tall, heavy, and oversized equipment or non-divisible loads. Its defining characteristic is an exceptionally low main deck (the “well” or “belly”) that sits much closer to the ground than a standard flatbed. This low profile allows it to clear overhead obstructions like bridges and power lines, crucial for transporting large machinery. Lowbed trailers often feature multiple axles and a robust chassis to distribute immense weight, ensuring stability and safety for critical heavy haul operations.
Low-Bed Trailer Application Scenarios
Lowbed trailers are indispensable in industries requiring the movement of large, heavy, and often tall machinery that cannot be transported on conventional trailers due to height restrictions or weight.
Construction & Infrastructure Projects: Transporting heavy construction equipment such as excavators, bulldozers, wheel loaders, cranes, large concrete mixers, and paving machines to and from job sites. This is its most common application.
Agriculture (Large Scale): Transporting oversized farming equipment like combine harvesters, large tractors, and specialized planters that exceed standard road dimensions.
Energy Sector: Hauling components for wind turbines (nacelles, hubs), transformers, generators, and other large parts for power plants or oil and gas fields.
Mining Operations: Moving massive mining machinery like large excavators, rigid dump trucks (disassembled), crushers, and drilling rigs within or between mining sites.
Industrial & Manufacturing: Moving large factory components, heavy industrial presses, turbines, and modular building sections that are too tall or heavy for other transport methods.
Military & Defense: Transporting tanks, armored vehicles, and other large military equipment.
Standard configuration
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SUNSKY axle
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12R22.5 Tires
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LED light system
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toolbox
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surface paint process
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Leaf spring suspension
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12-lock mid-container design
Customizable options
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Loading capacity
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Cargo platform dimensions (length, width and height)
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Suspension
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Ramp
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Gooseneck optional (hydraulic or ordinary)
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Tire model/ brand
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BPW/Triangle/FUWA axles as needed
Looking for some new designs ?
lowboy trailer detail design
Ultra-Low Deck Height: The defining feature, an extremely low main deck or “well,” allows for the safe and legal transport of tall equipment by keeping the overall load height within road clearance limits. This crucial design aspect defines its utility for heavy equipment transport.
Robust Multi-Axle Configuration: Equipped with multiple heavy-duty axles (e.g., 2, 3, 4 axles or more, often with spread axles) and sophisticated suspension systems, which effectively distribute the immense weight of the cargo across the trailer, ensuring stability and compliance with axle load regulations for oversized load hauling.
Removable Gooseneck (RGN) Option: Many lowboy trailers feature a detachable gooseneck, allowing the front section to be disconnected and lowered to the ground. This creates a ramp, enabling heavy, self-propelled machinery to be driven directly onto the trailer deck, significantly simplifying and speeding up the loading process for RGN trailers.
High-Strength Steel Construction: The entire frame, including the main beams and gooseneck, is constructed from advanced high-strength alloy steel. This material provides exceptional durability and structural integrity to withstand the concentrated stress of massive payloads, ensuring the longevity and reliability of the heavy haul trailer.
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FAQ
What types of oversized loads are best suited for a lowbed trailer?
Lowbed trailers, also known as lowboy trailers, are best suited for transporting oversized and overweight loads that are too tall or heavy for standard flatbeds. This primarily includes heavy construction machinery like excavators, bulldozers, cranes, and large industrial equipment such as transformers, generators, and pre-fabricated building sections. Their low deck height is crucial for clearing overhead obstructions, making them ideal for heavy equipment transport.
What's the difference between a Removable Gooseneck (RGN) trailer and a fixed-neck lowboy?
The main difference lies in their loading method. A Removable Gooseneck (RGN) trailer allows its neck to detach, creating a ramp for heavy, self-propelled machinery to drive onto the main deck from the front. A fixed-neck lowboy trailer requires machinery to be loaded from the rear, often using detachable ramps or loading docks. RGNs offer greater versatility and ease for heavy machinery transport, especially for construction and mining equipment.
How do heavy haul trailers ensure stability when carrying extremely heavy loads?
Heavy haul trailers ensure stability through several key design features. They are built with robust, multi-axle configurations (often with air-ride or hydraulic suspensions) that distribute the immense load weight evenly across the trailer and axles. Their inherently low center of gravity due to the low deck height significantly reduces the risk of rollovers. Reinforced main beams, wide deck designs, and advanced braking systems further contribute to the stability and safety of oversized load hauling.
What permits and regulations are typically required for oversized load transport using a lowbed?
Oversized load transport using a lowbed trailer typically requires special permits from each state or jurisdiction the load will travel through. These permits specify approved routes, travel times (often restricted to daylight or specific hours), and may necessitate escort vehicles (pilot cars) or police escorts. Regulations vary based on the load’s exact dimensions (length, width, height) and weight, and compliance is crucial for legal and safe heavy equipment hauling.
What are the key maintenance aspects for a lowboy trailer's hydraulic system?
The hydraulic system of a lowboy trailer, especially for an RGN trailer, is critical for gooseneck detachment and reattachment. Key maintenance aspects include regularly checking hydraulic fluid levels and quality, inspecting hoses and fittings for leaks or wear, and ensuring all hydraulic cylinders operate smoothly without binding. Proper lubrication of pivot points and routine pressure checks are vital to maintain the system’s efficiency, prevent breakdowns, and ensure safe operation of the removable gooseneck trailer.
How do lowbed trailers contribute to the efficiency of large-scale construction projects?
Lowbed trailers are indispensable for the efficiency of large-scale construction projects by enabling the rapid and safe relocation of critical heavy machinery. Their ability to transport massive excavators, cranes, and bulldozers directly to and between job sites minimizes downtime for equipment mobilization. This ensures that projects stay on schedule, reducing operational costs and accelerating overall construction timelines, making them a fundamental component of heavy construction transport logistics.
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