Trailers are key to logistics, transporting 70% of all cargo. These large vehicles can carry up to 80,000 pounds. Their success depends on every component working together.
HOWO Special Truck Ltd can customize HOWO, FAW and Shacman models. From the driveline to the safety system, every component is critical.
In the next section, we’ll give you a detailed look at the anatomy of a tractor trailer.
Table of Contents
Understanding the structure of a tractor trailer
Today, trailers are the key to cargo transportation. Trailers are efficient, safe, flexible and suitable for transportation of different types of goods. Let’s take a look at how a trailer works.
Key terms for tractor trailer parts
Tractor: The power section consisting of the engine, cab and tractor towing seat of the tractor
Trailer: The cargo section mounted on the tractor
Axles: Front and rear axles that can hold up to 34,000 pounds
Tractor Fifth Wheel: Coupling that connects the tractor to the trailer
PTO system: Power source for auxiliary equipment such as dump trucks
How Tractor and Trailer Components Work Together
To understand tractor trailers, we must understand how they work together. The tractor’s engine powers the truck, while the trailer brakes help stop the truck faster. The fuel tank holds 100-300 gallons of fuel for long trips.
OEM parts from brands like Shacman extend the life of your vehicle. With proper maintenance, the vehicle can last up to 15 years or 1 million miles. Suspension helps keep cargo secure during long trips.
The Tractor Unit
Tractors are the heart of every tractor trailer system. Tractors are powerful units that use advanced tractor trailer components to handle large loads. Tractor trailers are well-built and durable for safe and efficient long-distance traveling.
HOWO Special Truck Ltd offers tractors with customizable trailer parts. This can be customized to meet the needs of different operations.
Each tractor trailer has important components such as a cab, engine and chassis. The cab is where the driver works, with comfortable seats and a modern instrument panel. the HOWO model focuses on driver comfort, with a sleeper berth and air conditioning.
Under the hood is a 400-600 hp diesel engine. It has a 100-300 gallon fuel tank for long trips. The chassis is rugged and can carry up to 80,000 pounds, supporting both the tractor and trailer.
Tractor trailer breakdowns show how each component works together. Here are the major components and what they do:
Component Function Key Specifications
Cab Driver’s work area with controls Ergonomic seats, sleeper berths
Engine Power generation 400-600 HP, diesel/gasoline options
Enclosure Structural support Can carry up to 80,000 lbs.
Electrical systems Powering accessories and engines Batteries, wiring and advanced sensors
We can also customize these tractor trailer components. Regular maintenance, such as checking engine components, can improve fuel efficiency by up to 15%. This focus on quality helps the tractor trailer last through everyday use.
Essential trailer components and their functions
The structure of a tractor trailer is primarily concerned with safety and efficiency. Key components such as the chassis, suspension and brakes work in tandem.Brands such as HOWO Special Truck Ltd can be customized to suit different cargo requirements.
The trailer’s steel or aluminum chassis is its main structure. It can be up to 53 feet in length, 8.5 feet in width and 13.5 feet in height. Modern trailers are made of lightweight materials that allow them to carry more weight without being overly heavy.
For example, a trailer can carry 60,000 pounds of cargo. This is due to the use of the right materials and design. As a result, the trailer is strong but not too heavy.
Suspension Systems and Axle Configurations
Suspension systems make the ride smoother and improve stability. The number of axles depends on the load. Lighter loads may use a single axle, while heavier loads use dual axles rated up to 40,000 pounds.
For fragile cargo, air suspension is the best choice. Leaf springs are better for heavy loads. The position of the axles affects how the trailer maneuvers and whether it complies with safety rules.
Trailer-Specific Brakes
Trailer brakes are required when the GVWR exceeds 3,000 lbs. Air brakes are used in conjunction with the tractor to ensure a safe stop. the ABS prevents the wheels from locking up for a safer stop.
Emergency brakes keep the trailer stable even when not attached to the tractor.
Loading equipment and tie-down systems
Hydraulic ramps and winches make loading easier. Tie-down points and straps keep cargo in place.
Properly securing cargo prevents it from moving. This reduces the possibility of damage. Trailer tires should be inspected every 3 years or when the tread is less than 4/32 inch.
How Tractors and Trailers Become One Functional Unit?
At the heart of tractor trailer structure is the perfect joining of tractor trailer parts. This connection is key for safety and efficiency. Knowing how the tractor trailer design works is vital for those who operate them.
The fifth wheel of the tractor is the main connection point. It must be aligned to ensure even weight.HOWO Special Truck Ltd offers tractor fifth wheels that are durable and meet exacting standards.
These fifth wheels can handle extreme temperatures and resist damage from chemicals. This ensures they work well in harsh conditions.
Fifth Wheel Precision: Adjust the 5th wheel’s tilt to avoid gaps between tractor and trailer kingpin. Misalignment risks instability.
Air Line Safety: Automated couplers eliminate manual tubing, reducing brake lag. Proper air pressure checks prevent leaks, critical for trailers requiring 25-50% braking efficiency.
Electrical Systems: Modern seven-pin connectors enable telematics and lighting. HOWO’s multi-voltage systems support 12V to 48V, future-proofing against evolving power needs.
Conclusion
Understanding the parts and components of your towing trailer is key to safe and efficient driving. Understanding the engine and trailer systems is critical to maintenance. It is recommended that regular inspections of brakes, tires and electrical equipment can prevent breakdowns.
HOWO Special Truck Ltd. offers customized trailers and trucks for sale to meet industry needs. We can also adapt HOWO/FAW/Shaanxi models for construction, logistics and agriculture. This ensures optimal performance.
