Axle is one of the core components of semi-trailer, which is directly related to the strength of vehicle bearing capacity. Especially for the semi-trailer, as one of the main models in the domestic logistics and transportation industry, its cargo carrying capacity must fully meet the standard, otherwise, it will affect the owner's operating income at a low level and the vehicle driving safety at a high level. Imagine that if the axle breaks due to insufficient bearing capacity when the vehicle is running at high speed with full load, the consequences will be unimaginable.

As for the position of the axle, I believe many car owners can still distinguish it, that is, the axle connecting the wheels at both ends of the vehicle. A car owner asked: is the axle the same thing as the axle? Not really. Although many car owners like to use the axle to call the axle, they are two different parts.

The axle is an optical shaft. On the basis of the axle, the brake base plate, spherical bearing seat, air chamber seat, etc. are welded to form the axle body assembly, and then on the basis of the axle body assembly, the camshaft assembly, brake assembly, wheel end assembly, cotter pin, adjusting arm, ABS sensor, ABS positioning clamp and other parts are installed to form the axle. Therefore, the axle can also be called an axle assembly.

The axle of the semi-trailer is connected to the wheels at both ends through the wheel end assembly, and the frame is connected in the middle through the suspension system. The main position for loading goods is above the frame. Therefore, the strength of the axle heavy load performance directly determines the bearing capacity of the semi-trailer, and it is also an important performance parameter for the owner to select the axle products. So, what kind of axle has stronger bearing capacity?

According to the appearance style and manufacturing process, the axle can be divided into American axle and German axle. The main difference between them is the axle head.

In terms of appearance, the axle head of American axle is thicker, which maintains the basic shape of axle tube and has a regular shape;

The axle head of German axle is thinner, the treatment of axle end is irregular, and there are many inclined planes.

This leads to the thicker axle head of the American axle, the higher strength of the part connected with the bearing, and the larger load it can bear.

From the perspective of processing technology, the American axle adopts the integrated axle body building technology. To put it more popularly, the axle heads at both ends are integrated with the axle tube in the middle, which are polished directly from a steel pipe;

The shaft heads at both ends of the traditional German axle are welded to the shaft body. During production, the shaft body is the shaft body and the shaft head is the shaft head. After production, they are welded together.

From this point of view, the American axle has no subsequent welding treatment, and the original integrated axle has stronger weight resistance.

Looking at the current domestic axle Market, the typical representative of American axle is Guangdong Fuhua, which introduced the integrated axle production technology from the United States around 2005 and developed the first batch of integrated axle tubes in China. As the earliest American axle enterprise in China, its market share has reached about 70%, and its strength is still very strong. However, the only drawback is that the price is too high. As a first-line axle brand, Guangdong Fuhua's product line tends to be high-end, and its price naturally rises. Coupled with the blessing of brand premium, products of the same specification can even be about 30% higher than other brands.

So, is there any other brand with mature production technology and relatively popular price of integrated axle?

Yes, that's Shandong Darong. Darong is an axle enterprise that started earlier in the north. It entered the axle manufacturing industry as early as 2001. In 2006, in order to improve axle production efficiency and technology, Darong R & D personnel successfully developed an integrated axle production line after nearly two years of R & D and testing, becoming the first enterprise to mass produce integrated axles in Shandong Liangshan commercial vehicle production base. The axles produced by Darong are made of high-strength alloy seamless steel pipes as raw materials. Fifteen production processes such as 1300 ℃ hot rotary rolling, 865 ℃ medium frequency quenching, 480 ℃ heat preservation and tempering, multi-point on-line straightening and CNC precision grinding are set to fully ensure the strength, toughness, ductility and durability of the axle. So far, after years of market baptism, the process and technology can stand the test.

In terms of price, Darong group adheres to the high cost performance route, covering all optical axle semi-finished products, welding semi-finished products and axle finished products. Its disc axle, drum axle, concave axle, three-line six axle axle, special axle and other product series are rich, and special sizes can provide customized services. Cast the world axle and build a century old glory. Those who are interested are welcome to consult and buy.