The axle is one of the power core assemblies of semi-trailer. Its main function is to carry the body weight, followed by driving and braking to maintain the normal driving of the vehicle on the road. It can be said that the safety and reliability of a trailer largely depends on the quality of its axle system.

With the continuous development of domestic transportation industry, the axle industry chain is becoming more and more perfect. In addition to the advent of more and more new products, the axle also began to appear in the second-hand market.

Some sellers claim that their second-hand axles come from big brand manufacturers and are of reliable quality. Even second-hand products can be much higher than ordinary new axles in terms of performance. Compared with new products, these second-hand axles have an advantage in price, coupled with brand blessing, which makes some car owners very excited.

So is this second-hand axle reliable?

To tell the truth, Xiaobian doesn't recommend car owners to buy it. The axle is a key component of the vehicle chassis and also a consumable component. In addition to bearing the key performance of vehicle load and braking, it also bears all kinds of erosion from the road surface, such as potholes, waterways, muddy roads, mountain roads, salted roads after snow, and even temperature, humidity, vehicle vibration and other factors will cause varying degrees of loss, Even the best quality axle will decay in varying degrees, unless the former owner's vehicle is really not used much. However, the use of the second-hand axle before sale can only be learned from the seller's description to a large extent. As for whether it is true or not, it is necessary to analyze the specific problems. But in any case, those losses hidden outside the naked eye will have a great impact on the subsequent use of second-hand axle. At least, it will affect the vehicle attendance rate, and at worst, it may cause safety accidents. Therefore, in order to save money to buy second-hand axle, but the gain is not worth the loss.

Besides, there are many axle brands in the market, including products with excellent performance and reasonable price. Instead of buying those second-hand axles with uncertain performance, we might as well pay attention to the screening of new products. For example, Darong The Darong axle produced by (Shandong) Heavy Industry Group Co., Ltd. is a representative product with high cost performance. Its raw material is 20Mn2 high-strength alloy seamless steel pipe, which has been built through more than ten processes, such as hot rotary rolling, axle tube forming, CNC processing, axle medium frequency induction processing, precision grinding, comprehensive axle tube detection, automatic gas shielded welding, etc., so as to improve the strength and toughness of the axle , it does not deform and bend under high-strength transportation, and the bearing capacity, wear resistance and fatigue resistance are greatly enhanced. There are German axle, American axle, concave axle, disc axle and special axle. It has won wide praise from users at home and abroad with reliable quality and approachable price.