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What does the rear axle of a semi-trailer look like after disassembly? How to maintain the maintenance free axle?

Time:2022/5/5 14:07:47 Click on:836 Source:Darong traffic machinery Co., LTD

Axle, also known as axle assembly, is one of the most important components of semi-trailer, which is directly related to the load-bearing, driving and braking performance of the vehicle. The axle, engine and gearbox are called the three core assemblies of the trailer, which plays an important role in the stability and safety of the vehicle.

半挂车后桥分解后长啥样?免维护车桥怎样保养?

As for the rear axle of trailer, I believe many car owners have seen it. The appearance seems relatively simple, especially compared with the steering axle and drive axle. So when the rear axle of the trailer breaks down, car owners often choose to disassemble it by themselves in order to save the cost of using the car.

In fact, the structure of the rear axle of the trailer is not as simple as it seems. There are nearly 100 components on a trailer axle, which belongs to a real precision machinery. If any of the components are installed irregularly, it may affect the performance of the whole axle. If you do not have relevant operation technology, it is not recommended to disassemble it by yourself.

Exploded view and name of trailer axle:


半挂车后桥分解后长啥样?免维护车桥怎样保养?

It is also because the structure of the axle is precise and complex. In daily use, car owners must strictly do the relevant maintenance and repair work. They should open it every time or mileage to have a look at the operation status of key accessories, or do routine maintenance for the mechanical parts, such as changing lubricating oil, wiping, etc. However, in this way, the time, energy and even cost of car owners will increase.

Therefore, in order to improve operation efficiency, maintenance free axle came into being.

The so-called maintenance free axle is to replace grease lubrication with oil lubrication, add gear oil in the hub unit, the hub and oil seal form the storage space of gear oil, and the bearing is soaked in gear oil to ensure its sufficient lubrication capacity. The maintenance cycle is longer than that of ordinary axle.

半挂车后桥分解后长啥样?免维护车桥怎样保养?


It is worth noting that "maintenance free" ≠ "inspection free". Although the maintenance cycle of this kind of axle is relatively long, car owners can not ignore the daily inspection and maintenance. Even if the maintenance mileage is not reached, the axle needs routine inspection, so as to give full play to its maximum use advantage.

Precautions for use of maintenance free axle:

1. Before departure, check the axle fasteners to see if they are loose;

2. Check the hub cover for damage and oil leakage;

3. Regularly observe whether the gear oil in the hub is above the normal level and whether it is polluted. Generally, the lubricating oil is dark. If it is white or milky, it indicates that the lubricating oil is polluted;

4. Every 12 months or 100000 kilometers, the wheels shall be erected to check whether there is abnormal sound during rotation and whether the bearings shake;

5. Every 12 months or 100000 kilometers, it is necessary to open the oil filling hole, extend the magnet probe into the lubricating oil and check whether there are impurities such as iron filings.

半挂车后桥分解后长啥样?免维护车桥怎样保养?

In addition, car owners should also note that the maintenance mileage given by the axle manufacturer is evaluated according to the general service conditions. If the actual service conditions of the vehicle are relatively poor, the maintenance mileage also needs to be shortened accordingly. For example, the maintenance of the axle needs to be advanced in the following cases:

1. When the vehicle is overloaded, the load to be borne by the wheel hub bearing is larger, and the heat generated is higher compared with the standard load transportation. The maintenance cycle of this kind of vehicle must be shortened and cannot be carried out according to the official standards;

2. If the vehicle is often driven under bad working conditions, and floating dust, rainwater, snow melting agent, sediment, etc. are often covered with the vehicle chassis, it may enter the lubricating oil through the vent hole, resulting in the deterioration of the lubricating oil. In this case, it also needs to be replaced before the official maintenance cycle;

3. When the climate change is obvious, vehicles are used, such as long-distance transportation between East and West, South and North, and the lubrication system is also prone to failure under the cold and hot climate change, which requires the owner's additional attention.

半挂车后桥分解后长啥样?免维护车桥怎样保养?

As the saying goes, the vehicle is "repaired in three parts and maintained in seven parts", and so is the axle. Only by doing well in daily maintenance and repair, can we fully ensure its technical performance, strictly meet the standard, prevent faults and prolong the service life. In addition, it is also important to choose a brand with reliable quality. For example, Darong axle is specially tailored for trailers. It has focused on the research, development and production of trailer bridges for more than 20 years, and its quality and service have stood the test. Since entering the market, it has always maintained zero quality disputes and won the trust of many customers. Special size Trailer bridges can provide customized services. Customers in need are welcome to contact and consult.

半挂车后桥分解后长啥样?免维护车桥怎样保养?


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