Maintenance-free axles are frequently used on some high-end freight models, and their applications are mostly aimed at extending the maintenance cycle of the wheel end, reducing maintenance frequency, improving vehicle operation efficiency, and reducing downtime caused by maintenance.

The so-called maintenance free axle refers to using oil lubrication instead of grease lubrication, injecting gear oil into the hub unit, forming a storage space for gear oil between the hub and the oil seal. The bearings are immersed in gear oil to ensure their sufficient lubrication capacity and achieve a longer maintenance cycle than ordinary axles.

The advantages of maintenance-free axles

1. The oil change interval at the wheel end is extended.

This is also the most obvious advantage of a maintenance free axle. In general, the maintenance cycle of ordinary axles is mostly concentrated in 20000 to 50000 kilometers, while maintenance free axles can be extended to 5 years/80000 kilometers, with an interval of about 100000 kilometers. Owners only need to conduct a simple visual inspection, which can help them save a lot of time and energy.

2. The bearing performance is more stable.

The bearings of the maintenance free axle are immersed in lubricating oil, which can provide more sufficient lubrication effect during rotation. The oil circulates inside the hub, making the working state of the bearings more stable.

3. The service life of the wheel end is extended.

Because the bearing is immersed in lubricating oil, when it produces debris or impurities during operation, the lubricating oil will clean it up and settle inside the hub cavity during circulation, reducing the damage to the bearing and extending the service life of the wheel end.

4. Reduced comprehensive car maintenance costs.

According to relevant survey data, during the service cycle of the wheel end, maintenance free axles can help car owners save a lot of expenses. If the wheel end maintenance is charged at 150 yuan per time, it can save nearly 10000 yuan for 150000 kilometers.

However, car owners need to note that "maintenance free" ≠ "inspection free". Although the maintenance cycle of this type of axle is relatively long, car owners cannot ignore daily inspections and maintenance. Even if the maintenance mileage is not reached, routine inspections of the axle are necessary to maximize its advantages in use.

In general, transparent wheel hub covers are designed on the wheel ends of maintenance free axles, which is also to facilitate the owner's observation of the internal oil status, in order to replenish or replace the oil in a timely manner.

Precautions for using maintenance free axles

1. Before departure, check the axle fasteners to see if there is any looseness;

2. Check if the wheel hub cover is damaged and if there is oil leakage;

3. Regularly observe whether the gear oil inside the wheel hub is above normal level and whether it is contaminated. Generally, the lubricating oil is dark, and if it appears white or milky, it indicates that the lubricating oil is contaminated;

4. Every 12 months or 100000 kilometers, the wheels should be erected to check for any abnormal rotation noise and whether the bearings are shaking;

5. Every 12 months or 100000 kilometers, it is necessary to open the oil injection hole and insert a magnetic probe into the lubricating oil to check for impurities such as iron filings.

In addition, the maintenance mileage used for reference is generally determined based on the average operating conditions. If the actual application conditions of the vehicle are relatively harsh, the maintenance mileage also needs to be shortened accordingly:

1. Frequent overloading of vehicles results in higher loads on wheel hub bearings and other components, resulting in higher heat generation compared to standard load transportation. The maintenance cycle of such vehicles must be shortened;

2. Vehicles often drive in harsh working conditions, with floating dust, rainwater, snow melting agents, mud and other substances often covering the chassis of the vehicle. This may enter the lubricating oil through the vent hole, causing it to deteriorate. In this case, it is also necessary to replace it before the official maintenance interval;

3. When using vehicles in situations of significant climate change, such as long-distance transportation with large spans from east to west, south to north, and sudden changes in temperature, the lubrication system is also prone to malfunctions, requiring extra attention from car owners.

In fact, whether it is a maintenance free axle or a regular axle, it is important to choose a brand with reliable quality. Darong Axle is specially designed for trailers, focusing on the research and development and production of axles/axles for 20 years, and its quality and service can withstand the test. Darong maintenance free axle eliminates the tedious maintenance process, has higher stiffness and accuracy, long service life, higher vehicle attendance rate, and saves worry and money. Special sizes can be customized and have a good market reputation.