Low Bed Trailer Ultimate Guide – What is a Lowboy/Lowbed ...
Low Bed Trailer Ultimate Guide – What is a Lowboy/Lowbed ...
Low Bed Trailer Ultimate Guide &#; What is a Lowboy/Lowbed Trailer?
Have you ever seen a trailer carrying 150 tons or more? How would you transport huge machinery, an excavator, or a crane from one location to another?
Would you like to know more about a trailer that can transport such heavy loads? Have you heard of a lowbed trailer (lowboy trailer) and its capacity to transport up to 150 tons?
In this guide, you will learn everything about a low bed trailer. We will show how you can choose the best low bed trailer / lowbed trailer for your business. You can follow this guide and purchase a cost-effective lowboy/low bed trailer from China.
Lowbed trailers have different capacities, such as 20 T/tons, 30 T/tons, 50 T/tons, 70 T/tons, 80 T/tons and 100 T/tons, 120 T/tons, 150 T/tons. Each type use different number of axles from 2, 3, 4 axles to 7, 8 axles.
This guide has a detailed discussion on the structure of a low bed trailer / lowbed trailer, its components, and quality control process. We discuss different types of low bed trailers and the advantages of each type.
You will also learn the manufacturing process of the heavy transporters.
Low bed trailers are used in different industries including heavy-cargo transportation and trucking among others. The trailers are referred to as lowboys in some countries. Others consider the hydraulic axles modular trailer as a low bed trailer.
Modular Transporter Ultimate Guide (SPMT and Modular Trailer) is available now, get more details about hydraulic low bed trailer.
This guide does not cover a hydraulic trailer. We will release another complete handbook with all the details you need about a hydraulic module trailer. This guide focuses on low bed trailers without hydraulic suspension.
If you have just joined the logistics industries, you will benefit from this handbook. We will give you all the information on how the low loaders technology works.
Chapter 1: What is a low bed trailer?
A low bed trailer is a heavy-duty vehicle that is to transport heavy, wide, and tall cargo. In this chapter, you will learn:
The history of low bed trailers
Applications and advantages of low bed trailers
Different types of low bed trailers with detailed pictures for each type
Different structures of low bed trailers with pictures of all the components
Load capacity calculation
This chapter has all the basic information about the heavy-duty trailers. Here are some pictures of different types of low bed trailers.
1.1 The History of Low Bed Trailers
The first low bed trailer was manufactured in the s. This first model had a riveted gooseneck that would be attached to a truck from the front part of the trailer.
The model had solid rubber tires on the rear part. It could only be loaded from the rear part. The design limited the method of loading heavy cargo. Operable equipment would be driven onto the deck of the trailer over the rubber back tires.
A better model of low boy trailers was introduced in the s. The loading capacity of the improved model was higher and loading heavy equipment on the deck was easier.
The trailers with a detachable gooseneck were introduced in . The design made loading the deck even easier. The first model could only be loaded from the back because of the riveted gooseneck.
The new models introduced in the s could be loaded front the front.
The detachable gooseneck trailers back then operated in the same way as the current models of RGN trailers. The design eliminated the need for loading ramps in low boy trailers.
Low bed trailers have evolved over the year to include hydraulic systems. A hydraulic ram is used in modern trailers to lift the trailer to meet the unit after loading.
Modern models of low bed trailers have air breaks, which were missing in old models. The lowboy can be towed by trucks.
1.2 Applications and Advantages of Low Bed Trailers
Applications
Low bed trailers are used to transport heavy cargo is different industries. Here are most common uses of the heavy-duty trailers.
Heavy vehicles: Vehicle manufactures use low bed trailers to transport heavy vehicles from one showroom to another. The transporters are used to move the vehicles from the port to showrooms and sometimes to clients.
Some of the heavy vehicles that low bed trailers transport include buses, tractors, and special vehicles. A low bed trailers can transport stacks of small vehicles at the same time.
Rail vehicles: There are different categories of rail vehicles including road-rail vehicles, goods wagon, locomotives, and rail motor coach among others.
The common characteristic of these vehicles is that they are heavy and bulky. Low bed trailers are among the best ways to transport rail vehicles.
Mining machinery: Mining requires heavy machinery for drilling and transporting materials including crude oil and minerals. The machinery is assembled offsite and then transported to the mining sites using low bed trailers.
The heavy haulers are preferred because the structure of mining machinery. Mining equipment is perhaps the heaviest cargo that machinery manufacturers transport on the road.
Forestry machinery: The forestry industry uses heavy machinery as well. Heavy equipment is required to cut down and transport logs. Sometimes the logs are processed into timber and other by-products at the site before transporting the products.
The machinery is manufactured assembly halls or imported before it is transported to the forest. Low bed trailers are used to move the forestry machinery from the assembly to the forests.
The wheels of the trailers can navigate the rough terrain in forests. Low bed trailers are also used to move forestry machinery from one forest to another or back to assembly halls after a project is completed.
Agricultural machinery: Agriculture is another field that uses heavy machinery. The machinery is mostly used for large-scale farming. Such large farms are located far from towns and cities.
The major agricultural machinery that low bed trailers transport includes loaders, excavators, bulldozers, cranes, and pavers. The heavy trailers can navigate muddy agricultural farms and move machinery from one farm to another.
Construction: Low bed trailers are used in the construction industry as well. The heavy duty vehicles are commonly used in the construction of roads and bridges.
Some construction equipment and blocks cannot be transported with the normal semi-trailers. Low bed trailers are used to transport concrete blocks to the construction sites.
The blocks are not only heavy but also large. Constructors use the trailers to transports materials in bulk such as cement and beams
Windmill components: The components of windmills are usually assembly in a factory and then transported to their sites. Similar to other heavy cargo, the components are wide and heavy.
The components cannot fit on a closed trailer because of their design and structure. Lowboy trailers are efficient way of transport these components to their site.
Low bed trailers are not only used to transport machinery and vehicle but all categories of heavy loads. For instance, finished products from these industries are packed in containers and stacked on lowboys for transportation.
The transporters can move stacks of heavy containers without toppling over. Hence, many manufacturers prefer to transported finished products to retailers with low bed trailers.
Advantages of low bed trailers
Low bed trailers are widely used in different sectors because of their advantages over other heavy transporters. The main advantages are outlined below.
Stability
The deck of the lowboys is extremely compared to other heavy haulers. A low-lying deck means that the center of gravity is low. Hence, low bed trainers are more stable when transporting heavy cargo than trailers.
One of the ways of increasing stability is widening the base of support. This is possible with low bed trailers because the cargo plane width can be widened. The trailers remain stable on the road irrespective of the height and weight of the cargo.
Safety
Low bed trailers are specifically designed to carry heavy loads. The trailers are made of high-strength materials that can withstand pressure of up to 700mpa.
In addition, the height of the main beams can be as high as 550mm. Hence, manufacturers are assured of the safety of their equipment and products during the transportation process. Below is a picture of the heavy beams that are used to make low bed trailers:
A full discussion of all components and materials used to make low bed trailers follows in Chapter 2.2.1.
Complying with height restrictions
Some countries have laws that restrict the height of cargo that can be transported on the road.
Low bed trailers offer companies a solution to transport extra tall equipment safely without breaking the laws.
Loading tall equipment on a trailer is often a huge challenge to transport companies.
Some types of low bed trailers allow the user to lower the rear part, which makes loading heavy cargo easier and safer.
More details about different types of low bed trailers including the detachable trailers are outlined in the next section.
Versatility
One reason why many companies buy low bed trailers is that they are versatile. The trailers can heavy loads and over-width cargo. In most cases, heavy machinery and equipment are extra wide.
The structure of low bed trailers enable companies to transport such wide cargo easily. Remember that trailers can handle extra tall cargo as well.
A company that handles different types of cargo does not need to buy different trailers for each category. A low bed trailer can transport any type of goods as long as the goods are packaged appropriately.
All that transporters worry about after buying a low bed trailer is how to maintain it in good condition.
1.3 Different Types of Low Bed Trailers
Ordinary low bed trailer
An ordinary low bed trailer has a flat plate type, that is, the cargo plate is a flatbed. The trailer has only one drop, which is after the goose-neck as shown in the picture below.
The trailer is used to transport normal heavy cargo. It cannot transport cargo with a high height as other trailers. This type of trailer has a higher working platform than other low bed trailers because of the flat plate type.
The position of the working platform explains its limitations in transporting cargo with a high height.
A standard two-axle low bed trailers can transport up to 40,000 pounds. However, it is possible to increase the load capacity by increasing the number of axles.
The load capacity will also depend on the model. Some factories produce standard low bed trailers with additional axles depending on the customer&#;s needs. You can request for a customized standard trailer depending on the type of cargo.
Advantages
One of the benefits of using the ordinary low bed trailer is that it is cost-effective. The trailer is cheaper than other heavy-duty trailers.
Another advantage is that the cargo platform is longer. The second half of the ordinary low bed trailers can be used as a cargo platform. The picture below shows this second part that extends the cargo platform.
Low loader trailer
This type of a trailer is also referred to as a double drop deck trailer. The main characteristic of the trailer is that it has a lower cargo platform.
Its cargo platform is positioned lower than the rear half of the trailer. The structure of the cargo platform is call a staircase structure or a concave beam.
Advantages
The main advantage of the low loader trailer is high stability. The staircase structure lowers the height of the cargo center, which increases stability during transportation.
The trailer is commonly used to move heavy equipment and cargo with a high height. It is best suited in countries that have strict height restrictions. Below is are pictures of a double drop deck trailer.
Removable gooseneck trailers (RGN trailers) and folding gooseneck trailers
RGN trailers have the same staircase structure at the real part as the low loader trailers. The major difference in these trailers is that the gooseneck can be removed.
RGN trailers are used for transporting heavy equipment and machinery. When using an ordinary low bed trailer, the heavy cargo is loaded from the rear part. However, the cargo is loaded from the front part when using a RGN trailer.
Loading heavy cargo from the front is possible because the gooseneck is removable. Folding gooseneck trailers offer the same convenience of loading cargo from the front.
The difference with RGN trailers is in the movement of the gooseneck. Both RGN and folding gooseneck trailers do not have rear ladders as other trailers.
There are two major types of detachable gooseneck trailers. The first type is the hydraulic RGN trailer. It is the easiest and fastest to detach compared to other types of detachable gooseneck trailers.
The hydraulic RGN is versatile and the most common type of low boy trailers. The trailer uses hydraulic cylinders to detach the gooseneck. The cylinder lower and raise the trailer as required when loading cargo.
The hydraulic RGN trailer has a small cylinder that attaches the gooseneck to the truck. Heavy cargo can be driven from the front part to the deck of the trailer when the gooseneck is detached.
Hydraulic RGN trailers can be operated from the truck auxilliary. An alternative way is to run from a pony motor that can be mounted in the gooseneck of the RGN trailer. The shortcoming of hydraulics is that they are heavy and have a shorter deck length.
The second type of RGN trailers is the mechanical detachable goosneck trailer. Raising and lowering the trailer in this type is harder and slower compared to the hydraulics.
The main advantage of mechanical RGN trailers is that they are lighter and cheaper. In addition, they have a longer decking that makes them suitable for long and heavy cargo.
Many of the folding gooseneck trailers are mechanical. In the case of folding gooseneck trailers, the deck folds down to the ground. Hydraulic detachable goosenecks have more maintenance needs than mechanical detachabel goosenecks.
The hydraulic system increase the maintenance needs and costs. The ease and speed of loading cargo come at an additional cost of maintain the hydraulic system.
Transporting bulldozer by detachable goosneck trailer
Advantages
Why should you choose a removable or folding goose-neck trailer instead of other low bed trailers?
One benefit is that loading heavy from the front is safer than loading from the rear part or from the sides.
Loading from the back is unsafe especially when moving heavy equipment.
The rear part has a staircase structure. Hence, a long ladder is required to load heavy equipment.
The heavy cargo may fall off the ladder or from the rear part to the cargo platform.
Such falls will damage the equipment or cargo even before they are transported.
1.4 Different Structures of Low Bed Trailers
There are different types of low bed trailers as outlined above. However, low bed trailers have different structures as well. Hence, you may find the same type of trailers with different structures. There are four main structures of low bed trailers.
First, The differentiating factor in this structure is the number of main beams. The trailer may have 2 or 3 beams depending on the load capacity. 3 beams may be used to enhance the safety of the cargo. Below is an illustration of a 3-beam trailer:
Second, Most low bed trailers have an iron plate, which is strong and durable. However, some countries prefer to use wooden boards instead of iron plate.
The main reason for using a wooden board is to reduce the total weight of the trailer. Here is an example of a low bed trailer with a wood board.
Third, Sometimes the cargo that needs to be transported requires the dimensions of the low bed trailers to be adjusted. The cargo may be wide or long.
This structure is different from others in that the trailer&#;s board can be widened to carry a wide cargo. Trailers with this structure have a widening device on the side as shown in the picture below:
Fourth, The tires of a low bed trailer can either be exposed or unexposed. The main purpose of exposing the tires is to reduce the height of the trailer.
The practice is common in countries with strict height restrictions. Unexposed tires are common in countries with no height limitations. Here is a picture of a trailer with unexposed tires:
Here is an example of a low bed trailer with exposed tires:
1.5 Load Capacity Calculation
The best way to purchase a low bed trailer is to consult an engineer. The professional help of an engineer will guide you in determining the load capacity of the trailer.
Your first consideration when buying a low bed trailer is the maximum weight that you intend to transfer with the trailer. The right trailer should have the capacity to transport that weight.
However, you will not always get quick feedback from an engineer. Here is the method to use to calculate the load capacity without an engineer:
Maximum load capacity = number of axles x each axle&#;s load capacity + the load capacity of the towing truck
This formula enables you to estimate the maximum weight you can transfer using any trailer. However, you need another formula the right axle capacity.
Axles have different load capacities. The most common axles are 13t, 26t, and 30t or heavy load model. Here is the formula for choosing axles.
Total weight = empty weight (vehicle weight) + cargo weight = 2 x number of axles x each axle&#;s load capacity
The assumption in this formula is that the total axle&#;s load capacity is approximately equal to the load capacity of the towing truck. With this formula, you can choose the right axle type without an engineer.
Chapter 2: Factors to Consider When Purchasing a Low Bed Trailer
China has many excellent manufacturer of heavy-duty vehicles including low bed trailers. This chapter provides a buying guide to help you buy the right low bed trailer for your business. The aspects of the purchasing process covered in this chapter include:
How to choose a suitable model
How to choose components
The complete manufacturing processes
How to choose a company
Let us now focus on each of these aspects in detail. By the end of the chapter, you will have all the information you need to buy a cost-effective trailer from China.
2.1 How to Choose a Suitable Model
The ordinary low bed trailers, RGN trailers, and low loaders have their advantages and disadvantages. Then right model for your business will depend on the type of cargo that you want to transport.
Choosing the right low boy trailer is important because of the safety of your goods. You want your goods to arrive to their destination in a good condition at all times. Any accidents and damages on the road will lead to huge losses.
Since lowboy trailers carry heavy and expensive cargo, any damages will have a huge effect on your business profits. If you are operating a freight company, accidents and damages will ruin the reputation of your business.
Another disadvantage of choosing the wrong model of low bed trailer is downtime. You will always disappoint your clients because of occasional downtime if you choose a trailer to low quality components.
Here are major considerations you should make to choose the right model.
Price: Always start the purchases process with a budget in mind. The prices of low bed trailers vary with their load capacities and performance.
The ordinary low bed trailers have a higher cost performance for transporting heavy goods than trailers. The best model should fit your budget.
If you are looking for a trailer to transport heavy cargo at the least cost possible, the ordinary low bed trailers are your best choice.
Cargo dimension: It is important to consider the dimensions of your cargo when choosing a trailer model. Consider the width and height, especially if your country has height limitations for transportation vehicles.
If the height of your cargo is too high, choose a low loader, an RGN trailer, or a folding gooseneck trailers. The models allow you to lower the rear part and reduce the total height of the cargo.
Cargo weight: The right model will depend on the maximum weight of your cargo. If you intend to transport more than 70 tons, consider buying low loaders, RGN trailers, and folding gooseneck trailers.
The three models have a high load capacity to transport heavy cargo. In addition, the lower deck ensures that the heavy cargo remains stable during transportation.
When you lower the rear part to load the cargo, you lower the center of the cargo or the center of gravity. Lowering the center of a heavy load increases its stability.
Loading process: Loading heavy cargo on trailers is often a challenge to many businesses. However, the process can be easier if you choose the right model. It is cumbersome to load heavy and bulky on trailers with no drop deck.
You do not just need a staircase structure to reduce the height of the cargo but also to make loading easy. Trailers have different loading processes.
While RGN and low loaders are good for loading heavy cargo, an ordinary trailer may be the best if you have lifting equipment. Most low bed trailers are loaded either from the front or from behind.
However, you will find some models in the market that allow you to place the trailer under the cargo load and then lift it. This method is convenient and reduces the risk of damaging the goods while loading.
Maintenance costs: The buying price is not the only cost you will incur on your trailer. You have to service the trailer regularly to maintain its optimal performance. Some factories make the best trailers but use expensive parts.
You will learn about maintain different parts in chapter 7. However, you need to consider the cost of keeping the trailer running at all times. If you choose a cheap trailer, you may incur a higher cost in replacing worn out parts.
Sometimes expensive trailers have lower maintenance costs because the components are of high quality. You can research on the maintenance requirements from the manufacturer&#;s recommendation.
At the end of the day, you should get a cost-effective trailer that can handle your type of cargo. Balance the cost with the performance or loading capacity of the trailer.
Future business needs: You are likely to buy a trailer based on type of cargo that your business has been transporting. However, you must consider the possible that the type of cargo may change in the future.
If you just started a freight company, the initial cargo may be within the standard weight, width, and height. As you grow your business, the cargo may get heavier, bulkier, and wider.
The best approach is to buy a versatile trailer that can handle current and future needs of your business. For instance, a standard trailer can transport your current cargo but you will need a low loader or an RGN trailer in the future.
It is cheaper and better to buy an RGN trailer that can last for several years. You will not need to replace the trailer when the business grows.
2.2 How to choose parts
After choosing the right model for your cargo type, you need to consider each component of the trailer. Remember that you will not always have an engineer to help you inspect the capacity of the components. In this chapter, you will learn how to choose different components including:
Material
Main beam
You will get efficient and thoughtful service from AUTONE.
Landing leg
Kingpin
Tires
Axles and brake
Suspension
Ramp
ABS
Different gooseneck&#;s structures, production procedures of RGN and folding gooseneck trailers will be introduced in next guide (coming soon).
Material
You need a low bed trailer for heavy-duty transportation. Hence, the right materials should be high-strength steel. The most common types of steel used in the main structure of low bed trailers include Q345, Q550, and Q690.
Aluminum is also used in the main structure in some countries. Here is a discussion of the different types of materials.
Q345 (ASMT Grade 50), Low Alloy Steel: In this discussion, Q represents the material yield strength. Hence, this type of material has yield strength of 345 MPa.
The specifications of the low alloy steel are C&#;0.20&#;Mn&#;1.7&#;Si&#;0.55&#;P&#;0.035&#;S&#;0.035&#;V 0.02~0.15. One of the advantages of choosing this material is that is it economic or cost-effective.
Other advantages include a high cutting and welding performance. The material is widely used in buildings, pressure vessels, vehicles, bridges, and ships.
Q550 (ASTM Type8 Grade 80), Q690 (ASTM 100 [690] Type Q: The two materials are quenched and tempered high tensile strength plates. They have yield strength of 550 Mpa and 690 Mpa respectively.
The materials are widely used in coalmine machinery and engineering machinery such as port cranes, hydraulic support, and shipyard transporters. Below is a table of material:
Aluminium: Some countries use aluminum instead of steel for the main structure. Aluminum has lower yield strength than steel and is more expensive. However, its cutting performance is very good.
Aluminum is lighter than steel and hence the trailers made of aluminum are very light. The light weight is not suitable for transporting very heavy loads.Aluminum trailers are recommended for tranporting cargo below 50 tons.
Advantages of aluminum include anti-corrosion properties and high prevention of rust. Its disadvantages include low wear resistance and low hardness or strength. Here is a picture of an aluminum trailer:
Main beam
The most common type of main beam in low bed trailers is the I-beam. I-beams consist of an upper plate, a vertical plate, and a lower plate. The vertical plate in most cases requires to be punched.
The vertical plate can reduce the weight of the trailer and increase the strength of the main beam. Most low bed trailers have 2 main beams. However, 3 beams are used for heavier transportation to improve the safety of the cargo.
A trailer with 3 beams is safer but heavier and more expensive than other trailers. Hence, you need to choose the right number of beams depending on your cargo type.
The main beams should have high yield strength to support a trailer. Hence, the ideal materials for main beams include Q345, Q550, and Q690 steel. Other beams can use materials of Q235 steel.
Cross beams and side beams are usually welded on the main beam as shown in the picture below:
Landing gear
The landing leg is used to support the trailer when it is disconnected from the truck. The most important consideration when choosing the landing leg is the loading capacity.
The landing leg can carry half of the total weight of the trailer. The main models of landing legs include individual operation and linkage.
The landing leg has a gear case for changing the speed of lowering or raising the trailer. Here is an important point to note when operating the landing leg.
Do not use the Quick Mode when the trailer is carrying a heavy load. Always ensure that the landing ground is horizontal. Below is a picture is of a disconnected trailer and the supporting landing leg.
King Pin
The kingpin is made of chromium alloy. There are two types of kingpins. The first type is 50mm (2&#;) while the second type is 90mm (3.4&#;). The kingpin is the hardest part of a trailer because it can bear the greatest force or pressure.
The kingpin is installed in two ways, which include welding and a bolted connection. Welding is the safety method of installation.
It is hard to separate the kingpin after welding and hence it remains in place during transportation. The main disadvantage of welding is that replacing the kingpin with a new one is troublesome. Here is a picture of a kingpin:
Tires
Low bed trailers use two major types of tires. The types include tube tires and tubeless tires. Which type of tires should you choose for your trailer? Let us look at the advantages and disadvantages of tubeless tires to help you make this decision.
Advantages of tubeless tires
Tubeless tires have high security on the road compared to tube tires. It is tubeless tires is pierced, the pressurized air leaks slowly. A tube tire, on the other hand, may blow out immediately after it is pierced.
The heat dissipation in tubeless tires is good. Hence, the tires have a long service life compared to tube tires.
Tubeless tires reduce the weight of the trailer and lower the fuel consumption rate. Hence, choosing trailers with tubeless tires will help you save on fuel costs
The tires can be used for long distance transportation because their wear resistance is good.
Disadvantages of tubeless tires
Tubeless tires are unpressurized and hence they are unsuitable for heavy loads. The tires cannot support an overloaded trailer because of the low pressure.
Reparation is cumbersome and its cost is high
The stability of the tires is poor on rough terrains
The table below outlines the specifications of the common types of tires for low bed trailers:
specification layer rim 8.25R20 10/12/14 6.5 9.00R20 10/12/14 7.0 10.00R20 10/14/16 7.5 11.00R20 10/14/16 8.0 11.00R22.5 10/14/16 8.25/22.5 12.00R20 14/16/18 8.5 12.00R22.5 12/14/16 9.0/22.5
Axles and brakes
Axles
Axles have different load capacities including 9T, 12T, 13T, and 16T among others. You can choose the most suitable axles for your low bed trailer based on their capacity.
Chapter 1.4 provides a complete guide on how to calculate the load capacity of axles and choose the right axles.
Axles have a self-steering model that uses a hydraulic / air system. The self-steering system is commonly used in multi-axles trailers to prevent tire wear.
The rear tires in multi-axles trailer wear out fast. Most of the tires in trailers do not have the steering function.
Brakes
Brakes are installed in the axles. Trailers use either a drum brake or a disc brake. Each model is discussed in detail below:
Drum brake: A drum brake as the name suggests is in the shape of a round drum with a set of shoes inside. The brake pad is pressed inside the brake drum to slow down the wheels.
A drum brake is cheap but its heat dissipation is poor. Repair and maintenance of drum brakes is also cost-effective. This type of brakes is commonly used in the low-speed and heavy-duty trailers.
The drum brake achieves brake fade faster than a disc brake on steep hills or at high speeds. Its level of efficiency is low compare to a disc brake.
Hence, the drum brake is mostly used for trailers and vehicles that drive at low speed. Here is an example of a drum brake:
Disc brake: This type of brake consists of a disc-shaped metal rotor that spins within a wheel. When a driver applies pressure on the brake pedal, a caliber presses the brakes pads against the disc.
This causes the wheels to slow down and the vehicle to stop when continuous pressure is applied. A disc brake is expensive compared to a drum brake.
Inspecting a disc brake for mechanical problems is easy because of its location outside the wheel. The brake pad requires regular replacement, which increases the maintenance costs.
However, the heat dissipation of a disc brake is good and the brake response is fast. Here is a picture of a disc brake:
Suspensions
You can choose from four different types of suspensions for your trailer. The characteristics, advantages, and disadvantages of each type of suspension are outlined below:
Mechanical suspensions
This type of suspensions is also referred to as multi-leaf suspensions. Mechanical suspensions consist of a series of reaction arms that keep the axles horizontal at all times.
The axles remain in the right position even in times of extreme motion. Hence, the suspensions are highly stable and hence prevent tumbling when transporting heavy loads.
The load distribution in low bed trailer with mechanical suspensions remains constant even when brakes are applied. Mechanical suspensions are suitable for heavy-duty trailers.
The suspensions are cheap and reliable. They are also easy to maintain and have a high load capacity. The suspensions can handle heavy loads on rough terrains.
Hence, if you are working with a limited budget for buying and maintaining your trailer, mechanical suspensions are a good choice. The maintenance costs of mechanical suspensions are low compared to other types of suspensions.
Most models require minimal or no lubrication. Here is an image of mechanical suspensions:
The most common models of mechanical suspensions have a spring mechanism. The mechanism reduces the vibrations that are sent to different components of a trailer during movement.
The effect of reducing vibration is that the components have a longer life because the rate of wear and tear is reduced.
Air suspensions
The main benefit of air suspensions over other suspensions is that they are light. In addition, air suspensions offer good stability. Drivers prefer air suspensions when carrying heavy loads because they are flexible.
The stiffness of the spring adjusts to the weight of the cargo on the trailer. Hence, drivers can enjoy a comfortable and better ride with air suspensions.
Air suspensions are associated with a longer tire life and better fuel economy. The suspensions reduce the vibrations to different components, which leads to less wear and tear.
Some models of air suspensions lift the axles in a trailer that are not in use. The suspensions allow the driver to adjust the height of the ride depending on the weight of the cargo and the terrain.
The driver can also adjust the height of the vehicle when empty. Keeping the height low when the trailer is fully loaded enables the driver to maintain stability of the trailer.
The low height also improve steering and vehicle control. Air suspensions can handle different terrains.
The main shortcoming is that air suspensions are expensive. Hence, the price of trailers with air suspensions is higher than the price of other trailers. The picture below shows an example of an air suspension:
Rigid suspensions
Rigid suspensions are sometimes referred to as double oscillation bogies because of their structure. They are among the oldest and simplest types of suspensions used in trailers.
This type of suspension is mostly used in heavy-duty low bed trailers. Rigid suspensions are also suitable for low speed transportation. With rigid suspensions, the movement of one wheel depends on the movement of other wheels.
Most modern models of trailers use independent wheels but some manufacturers are still using rigid suspensions.
Some of the reasons why some manufacturers choose to go back to the rigid suspensions are that they are cost-effective and easy to maintain. The suspensions have low maintenance needs and are simple to install.
Rigid suspensions are robust and have a high load capacity. Hence, they can be use in heavy-duty low bed trailers. The suspensions can easily handle large axle movements.
Rigid axle beams are associated with improve stability and wheel alignment. The driver maintains control of the trailer because the wheels remain perpendicular to the road at all times.
Hence, the tires have a longer service life because they have a firm grip on the road.
The main shortcoming of these suspensions is the poor damping effect. In addition, the driver cannot adjust the ride height whether the trailer is loaded or empty. Here is the structure of rigid suspensions:
Single point suspension
The suspension is also referred to as heavy-duty walking beam suspension. Single point suspensions can handle a high load capacity of up to 100 tons.
Hence, these suspensions are a good choice if your business handles very heavy cargo. The suspensions are common in trailers designed to carry heavy loads.
In addition to the high loading capacity, single point suspensions have a good damping effect.
Single point suspensions have reduces vibrations to the components of the trailer. This reduces wear and tear of the parts and increases the driver&#;s comfort on rough terrains or bumpy roads.
The major disadvantage is that they are expensive. A single point suspension is pictured below:
The type of suspensions used in low bed trailers depend on the capacity of the trailers. For instance, mechanical suspensions are commonly use in ordinary low bed trailers.
However, heavy-duty trailers (axle-line model) require suspensions with a higher capacity to withstand the pressure of heavy cargo.
Here is an illustration of an ordinary low bed trailer with 4 axles:
A heavy duty low bed trailer with two lines of 4 axles are picture below requires suspensions with a high load capacity.
Ramp
The ramp is used to move the cargo on a low bed trailer. The length of the ramp depends on the weight of the cargo. A longer ramp is required to move heavy cargo on the trailer.
Using a longer ramp reduces the slope, which makes it easier to move heavy cargo. You need to consider the maximum weight of your cargo when choosing a ramp.
There are two types of ramps, namely, a mechanical ramp and a hydraulic ramp.
Mechanical ramp: A manual mechanism or a spring is used to lift the ramp to the right height. A mechanical ramp is cheap and easy to maintain.
However, the ramp is cumbersome to operate especially when moving heavy loads.
Hydraulic ramp: With this type of ramp, a hydraulic cylinder is used instead of a spring to lift the ramp. A hydraulic ramp is efficient and easy to use.
You can move heavy cargo fast with a hydraulic ramp. However, the ramp is more expensive than a mechanical ramp. Here is an example of a hydraulic ramp:
ABS
You need to pay much attention to the ABS when buying and maintaining a trailer for safety reasons. A low bed trailer is mostly used to transport heavy loads.
Heavy-duty trailers have higher chances of causing accidents than other vehicles on the road. The wrong choice of an ABS may lead to fatal accidents.
Wabco is still the most famous brand of ABS in the world. The brand has maintained its popularity because of its high safety level. When the emergency brake is applied, the ABS model keeps the trailer manipulable.
The ABS model also shortens and optimises the braking distance, which enhances safety in times of emergencies.
The ABS sensor monitors the rotation of the wheel when the vehicle is moving at a high speed. However, when the wheel is not turning, the sensor allows the controller to reduce the braking pressure to keep the wheel rolling.
The controller will also keep the wheel&#;s lateral surface suspension and keep the wheel from slipping on the side. Hence, the driver maintains controls of the vehicle and keeps it moving in the right direction.
2.3 The Manufacturing Process
Why do you need to know the manufacturing process of a low bed trailer? Should you inspect the final product and make a decision from its components?
The knowlegde of the manufacturing process is important because it can help you determine if you are buying a high-quality trailer. Some indiviudual workshops cut corners and skip some important steps in the manufacturing process.
Below is a discussion of all the major steps in the manufacturing process.
Cutting and punching
A CNC cutting machine is used to cut out the steel plates including the web plate, reinforcing plate, and accessories. In other words, the machine is used to cut all steel plates required to make a complete low bed trailer.
Punching is important because it reduces the weight and stress of the trailer. In addition, punching increases the strength of the beams.
Below is an illustration of the cutting process using a CNC machine:
Bending and Correcting
The next step after cutting the steel plate is bending according the drawing. Every manufacturing process starts with a drawing of the final product.
Hence, the manufacturers must use the dimensions and shape on the drawing when bending the steer. A fixture is used to fix the components to ensure that they are vertical and
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Best 10 Lowbed Truck Semi Trailer Manufacturers
To be honest, choosing the best low bed trailer manufacturers is never easy. The materials, the services, the production technology, the customization support, and the delivery time are all we need to consider when choosing a low bed trailer manufacturer. Today let&#;s explore the 10 best low bed trailer manufacturers around the globe and hope you will find the perfect one to boost your business.
Panda Mech is a world-famous semi trailer manufacturer established in . With the quick development in the past 20 years, they have developed a full production flow to guarantee supplies. The low bed semi trailer is one of the star products in Panda Mech. There are 4 types of low boy semi trailers includes ordinary low bed semi trailer, gooseneck low bed semi trailer, detachable low boy semi trailer, and the folding neck low bed trailer (newly developed product this year). The load capacity varies from 20-120 tons to easily deal with heavy construction machines. Here you can also customize your low bed trailer no matter the number of axles or the trailer&#;s dimension, which makes this brand the best choice for most semi trailer buyers.
The services are another point that impresses customers around the globe. From the pre-sales to the after-sales, they are equipped with a professional team and you will get the solutions in 7/24.
low bed truck trailer manufacturer &#; Panda Mech
This is a semi trailer manufacturer that focuses on customization. They are specialized in providing services for customers with innovative solutions according to specific needs. In this way, you will only find a few good-quality lowboy trailers in the fountain. The lowboy classifies them into 2 types: the workhorse and the magnitude. The workhorse is used to carry 50-55 tons of cargo and the magnitude is to transport 55-80 tons, which is quite brilliant in the heavy-duty transportation industry.
lowboy trailer manufacturer supplier
DLT Group is a professional semi trailer factory exported to South Africa. Their low bed semi trailer covers load capacity from 20 tons to 140 tons, and the 40 tons and 80 tons are the most popular among their products. The low bed trailer in DLT is usually with 3 or 4 axles and customization is not available yet.
For more details, DLT can provide3 types of low bed trailers: the normal low bed trailer, the gooseneck low bed trailer, and the detachable gooseneck low bed trailer. You can choose to change the trailer&#;s bed from an iron plate to a wooden plate, then reduce the dead weight. So if you have clear requirements and don&#;t need tailor-made models, DLT can be a good choice.
lowboy truck trailer manufacturer
The Rota has a long product list from the tanker trailer to the lowboy semi trailer, but for the low bed model, it can only offer 1 type but with pretty good quality. As you will find on his page, there is only one model of the low bed trailer&#;the gooseneck low bed trailer.
The trailer is with 4 axles, is mm in length, and is extendable by mm. The gross weight is 115 tons and can carry 85 tons of cargo. Considering the transportation stability and load capacity, such configuration has a quite good performance to guarantee working efficiency.
low bed truck semi trailer manufacturer
Global Trailer is a famous manufacturer from the USA, and it is good at customizing heavy haul low bed trailers. Compared to the Rota trailer, the global trailers have abundant types of semi-trailers, especially for the low boys. According to the load capacity, there are 3 levels: 35-40 tons, 50-55 tons, 60-80 tons, and extendable type. In each level, there are the standard model, the paver model, the beavertail model, and the agricultural. You must find the satisfactory one in global trailers. (Related: detachable lowbed trailer)
low loader truck trailer manufacturer
Vertra Trailer is a lowboy trailer manufacturer located in Turkey and majored in agricultural trailers and different kinds of semi trailers. Their products can be classified as self-steering axles, forced steering axles, hydraulic auto remote control axles, low chassis to 20 cm, etc.
The low bed trailers in here include 2 to 10-axle semi-trailers, from the lightweight 20 tons to heavy-duty 120 tons. You can customize your low bed trailers in Vertra. For the axle brand, there are MPD, BPW, SAF, VALX, and GIGANT to choose from. And the suspension systems can be air spring suspension systems or mechanical suspension systems (also called &#;leaf springs&#;).
low bed trailer manufacturer
Wizco is a Florida brand famous for its removable gooseneck models. It has 3 kinds of low bed trailers of more than 20 specifications on load capacity and specifications. The loading capacity can be lower than 20 tons and higher than 60 tons, which is a good choice for customers who need medium-sized low boy trailers.
lowboy trailer manufacturer
Faymonville is an independent family company that is professional at manufacturing low loader, low bed trailer,s and flatbed trailers. The trailers are especially good at doing heavy-duty work.
In Faymonville you will find 6 series of low bed trailers in total&#;the MegaMAX, the GigaMAX, the VarioMAX, the VarioMAX Plus, the MultiMax, and the MultiMAX Plus. Each series can also be divided into several models to fit in different situations. Truth be told, it has the widest range of low bed trailer models. They can be used for various industries such as construction, agriculture, forestry, etc.
low bed trailer manufacturer
Supral Trailer is an expert on low bed trailer manufacturing from China and can provide special low bed trailers as well. The low bed here mainly included four types: the gooseneck low bed trailer, the extendable low boy trailer, the advanced low boy trailer, and the container trailer. These cover the four basic models, which makes it a good choice for customers who need basic models.
The Supraltrailer uses hydraulic suspension, air suspension, and mechanical suspension of multi axles. The hydraulic type can lift up each axle independently and the air suspension can be adjusted according to the situation. Also, it provides customization to extend the usage of it.
low bed trailer manufacturer
Martin Trailer Company offers a wide variety of low bed trailers to complete heavy haulage work. The low beds here are of T-1 high-strength steel, equipped with good-quality running gears, which makes the low beds quite sturdy to work for several years.
Martin mainly manufactures 2 types of low bed trailers. One is the conventional model that has a rear loading step deck, another is the more popular model of front loading with a hydraulic removable gooseneck, which is higher than the conventional one on loading speed and transportation safety.
low bed trailer manufacturer
Both the two types can be customized in size according to your needs. The maximum length is 40 meters and load capacity is 600 tons. Manufactured from a South African factory, the delivery time might be longer, but it&#;s worth waiting.
How to choose low bed trailer manufacturer?
- 1. Whether it is a factory, this is an essential criterion. There are many traders in China. Still, if we buy low bed trailers from traders, it will cost more. We suggest you choose to buy directly from the factory. PANDA Mech is a famous factory for direct sales. There is no intermediary to earn the price difference.
- 2. Years of establishment A company&#;s establishment years can reflect the company&#;s strength. PANDA Mech has been established for more than 20 years. Technology has been at the forefront of the world. Every year will invest a lot of human and material resources in research and development to improve.
- 3. Look at the company&#;s big customers, and how his big customers are more well-known companies in the industry. It also means that big customers trust this company and are very worthy of cooperation.
- 4. Product video: If a company has put enough effort into the product video, it also means that it is willing to pay more for the product, which is a trustworthy company.
- 5. When communicating with the business, whether the other party is professional, the business level of a company&#;s personnel also can be a side understanding of whether this company is professional if this company can provide you with professional services and advice on your problems. It must be correct to choose them.
Conclusion
Choosing a lowbed manufacturer is a very important thing, and it doesn&#;t seem that simple. We need to check whether the low boy manufacturer is professional and whether you can give us professional advice. We provide you with the best 10 low bed trailer manufacturer as a reference. If you have any questions, please feel free to leave a message below to consult us.
FAQ
Top 10 lowboy trailer manufacturers USA
- Trail King Industries: Founded in , Trail King is a U.S. trailer manufacturer known for heavy capacity trailers, quality craftsmanship, product life, and other varieties.
- Talbert Manufacturing: Founded in , Talbert Manufacturing has pioneered many innovative trends in the hauling space, making incredible strides includes designing fifty-five tons hydro-mechanical removable gooseneck lowboys.
- Load King Trailer: Founded in , Load King products are reputed for seamless efficiency and continual performance.
- Rogers Brothers Corporation: Operating since , Rogers Brothers Corporation custom designs each product to support unique workstation needs successfully.
- Kay-Tee: Known for their Flying &#;K&#; curtain trailer and lightweight directed equipment lowboy.
- Liddell Industries.: World-family manufacturers of Liddell Trailers serving several industries with durability and reliability guarantees.
- Aspen Custom Trailers: Established in , all their products supply successful, smooth capabilities.
- XL Specialized Trailers: ISO compliant and applies lean principles to simulation among them intuitively robust Optimizing Rail Management.
- Transcraft Corporation: Initially focusing on flatbed trailers leading in platform trailers, UK-production capabilities adapted for utility purposes.
- Cozad Trailer: Renowned manufacturer Unknown leverage Transport Largest capacities capability ahead authorize.
Related:
What is a lowboy
Contact us to discuss your requirements of low bed semi trailers. Our experienced sales team can help you identify the options that best suit your needs.
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