Many car owners are often asked about a parameter when purchasing trailer axles, which is the wheelbase. Just like choosing clothes depends on size, the wheelbase also determines whether the axle can match the vehicle.

Generally speaking, under the same load-bearing tonnage, there are often axles with different wheelbase. How can a vehicle measure accurately to obtain the wheelbase value?

Wheelbase refers to the distance between the centerline of the trajectory left by the wheels on the vehicle's support plane, which can be intuitively determined by the following figure:

So, if the vehicle has a dual tire structure on both sides, the wheelbase is the distance between the center planes of the two wheels on one side.

It should be noted that wheelbase and wheelbase are not the same parameter. Wheelbase refers to the distance between the center of the front axle and the center of the rear axle of the vehicle. Simply put, it is the distance between the front and rear axles of the vehicle, which is related to the length of the vehicle's turntable. Car owners should not confuse it with wheelbase.

Next, let's talk about several common trailer rear axles and their main characteristics in the market. Car owners can choose according to their own usage conditions.

1. American style axle

The American style axle is most commonly used and has the widest range of applications in China. Its most obvious advantages are strong load-bearing capacity, durability, resistance to construction, relatively low price, and high cost-effectiveness. In addition, it is designed simply, easy to maintain, and various accessories are also commonly used in the industry. It is easy to buy and match, and can be used for various types of general cargo transportation. It can also be used for the transportation of heavy goods such as sand and gravel, steel coils, wood, coal, etc.

2. German axle

The characteristics of German car axles are long-lasting, stable, and lightweight. On the one hand, they are fuel-efficient and tire saving, which can reduce comprehensive vehicle costs. On the other hand, they have a long maintenance cycle and better heat dissipation efficiency. They are suitable for transportation conditions that require certain requirements for transportation efficiency and vehicle attendance, especially for long-distance standard load transportation, such as trailer suspension, port, cold chain, green passage, express transportation, etc.

3. Low flatbed axle

Low flatbed axle is a specialized axle used on low flatbed semi-trailers. According to regulations, low flatbed semi-trailers mainly transport large goods that cannot be disassembled. Therefore, their axle needs to meet the requirements of strong load-bearing, stable transportation, and convenient loading and unloading of goods. The most obvious characteristics of a low flatbed axle are small wheel ends, low height, low center of gravity, and relatively high wall thickness parameters, making it suitable for transporting various large goods, such as mechanical equipment, large tanks, construction equipment, power station equipment, etc.

4. Eccentric axle

Eccentric axle and low flat axle have similar advantages in pursuing low center of gravity. The difference lies in the special treatment of the axle beam of the eccentric axle, which can further reduce the chassis height of the frame. It is mainly used on some car carriers, allowing them to obtain more loading space without exceeding the height limit. At the same time, it can reduce the turning radius, improve tire grip, transport stability, and facilitate speed increase and loading and unloading of goods.

5. Disc axle

The advantages of a disc axle mainly lie in its sensitivity to braking, resistance to thermal and water attenuation, stable braking force output, and lightweight design. Especially when used in conjunction with ABS, EBS, hydraulic retarders, air suspension and other devices, the advantages of a disc axle can often be fully utilized. In addition to the mandatory requirement of semi hanging three axle railings in warehouses, for transportation conditions that require high cargo damage, such as hazardous chemicals, precision instruments, fragile items, valuable items, and transportation of flowers, fruits, and vegetables, a disc axle can be chosen.

6. Light trailer axle

Light trailer axles are mainly designed for the rear axle of trailers, such as those with a load capacity of 3t, 5t, 6t, 8t, etc. They are characterized by small tonnage and more flexible installation and use. They are mainly used in various industrial trailers, agricultural trailers, field operation trailers, station trailers, trailer type RVs, and animal husbandry trailers. The specifications and parameters, including components, can be customized for production.

7. Three lines and six axes

The three line six axle vehicle bridge is mainly used for the transportation of large pieces or extra large pieces. This kind of goods is large in volume and weight, and generally cannot be disassembled, requiring large or special vehicles for transportation. The three wire six axle axle axle is specially customized for large transport vehicles, with a load of up to 80t, a large number of tires, reducing the average pressure on the contact surface and reducing the damage to tires and roads.