ZZ Bearing Failure Factors And Maintenance

Time：2020.12.16  Source：Roller Bearings Suppliers

Internal factors mainly refer to the three main factors that determine the quality of ZZ imported bearings, such as structural design, manufacturing technology and material quality.

Bearing structure design and manufacturing technology factors

First of all, if the structural design is reasonable and advanced, it will have a longer life of imported ZZ bearings. The manufacture of bearings generally involves multiple processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of ZZ imported bearings. Among them, the heat treatment and grinding processes that affect the quality of the finished ZZ imported bearings are often more directly related to the failure of the bearing. In recent years, studies on the degraded layer of the bearing working surface have shown that the grinding process of ZZ imported bearings is closely related to the surface quality.

Bearing material quality factors

The metallurgical quality of ZZ imported bearing materials used to be the main factor affecting the early failure of rolling ZZ imported bearings. With the progress of metallurgical technology (such as vacuum degassing of bearing steel, etc.), the quality of raw materials has been improved.

In the failure analysis of ZZ imported bearings, the proportion of raw material quality factors has dropped significantly, but it is still one of the main factors affecting the failure of ZZ imported bearings. In bearing failure analysis, the choice of material is still a factor that must be considered.

Measures to extend the life of imported bearings

The main task of ZZ imported bearing failure analysis is to find out the main factors causing bearing failure. Based on a large number of background materials, data and failure mode analysis, improvement measures are proposed to extend the service life of ZZ imported bearings and avoid the early failure of ZZ imported bearings suddenly. Shanghai Xinghuo Bearing Co., Ltd. provides ZZ bearing BS2-2219-2CSK.

1. For sealed ZZ imported bearings, proper grease has been filled during the production process.

2. For the bearing, a sealing device is also installed in the host to prevent grease leakage.

Can too much grease be injected into the bearing?

There is a question, how much grease should be injected into ZZ imported bearings. If the amount of grease is too small, it is easy to cause a lack of grease or dry friction, which will affect the service life. Too much grease will cause a large amount of grease to leak, pollute the environment and cause waste.

It can be seen that the amount of grease injected into ZZ imported bearings should be as small as possible under the premise of ensuring sufficient lubrication of ZZ imported bearings.

Advantages and disadvantages of grease lubrication

Under normal working conditions, most imported ZZ bearings can be lubricated with grease.

Advantages of grease

1. It is easier to keep in the ZZ imported bearing configuration, especially in applications where the vertical axis or the axis is inclined to a certain angle.

2. It has a sealing function to prevent the influence of pollutants, humidity or moisture on the ZZ imported bearings.

Disadvantages of grease

1. If there is too much grease, the operating temperature of the bearing will rise, especially in high-speed applications.

2. In most cases, only at the beginning stage, imported ZZ bearings can be completely filled with grease, while imported ZZ bearing shells can only be filled with a proper amount of grease and leave a certain amount of free space.

Before the working speed is fully reached, the excess grease must be discharged from the bearing during the running-in phase in order to retain an appropriate amount of grease in the ZZ imported bearings. When the working temperature drops significantly, it means that the grease has coincided with the bearing and is evenly distributed in the ZZ imported bearing configuration. Welcome to visit our website to buy ZZ bearing BS2-2220-2CSK.

When the ZZ bearing is used in the field, its working load is often greater than its corresponding fatigue durability limit load.

After working for a period of time, sooner or later, it will be fatigued and peeled because its data reach the fatigue limit, and it cannot be used anymore. Even if the working load of some ZZ bearings is lower than the corresponding endurance limit load, wear failure will occur because it is difficult to eradicate the bearing contamination problem.

In short, the bearing in the field use more or less can not fully meet the conditions of the above-mentioned laboratory, and a slight lack of any of these conditions will shorten the service life of the bearing, which will lead to the life problem of the bearing.

According to the latest rolling bearing fatigue life theory, a ZZ bearing with excellent design, excellent materials, sophisticated manufacturing and correct installation, as long as it is easy to accept the load (not greater than a certain durability limit load value corresponding to the bearing), then This kind of bearing material will never cause fatigue damage.

Therefore, as long as the working environment temperature of the bearing is suitable and the range of change is small, there is no absolute solid dust, harmful gas and moisture intruding into the bearing, the bearing is smooth and appropriate, the smoothing agent is absolutely pure and free of impurities, and will not With aging, the bearing will run indefinitely.

ZZ bearings have a variety of failure modes, but most of them have no available life calculation methods. The fatigue life, wear life, smooth life and fretting life can all be quantitatively evaluated by calculation methods.

ZZ Bearing (Shanghai) Co., Ltd (Aka ZZ Bearings) is the complete, one-stop Spherical roller bearings, supplier & manufacturer. All products are qualified and have passed the ISO 9001 qualification. Here are some popular types of Bearings, Send a quote and get the latest price of cheap bearings from ZZ Bearings.