WSBC Bearing Inspection During Operation

Time：2020.09.02  Source：Roller Bearings Suppliers

The inspection items of WSBC bearing during operation include rolling sound, vibration, temperature, lubrication state of the bearing, etc. The details are as follows:

1. The rolling sound of the bearing

The sound meter is used to check the size and sound quality of the rolling sound of the bearing in operation. Even if the bearing is slightly damaged such as peeling, it will emit abnormal and irregular sounds, which can be distinguished by the sound meter.

2. Bearing vibration

Bearing vibration is very sensitive to bearing damage, such as peeling, indentation, rust, cracks, wear, etc. will be reflected in the bearing vibration measurement, so the vibration can be measured by using a special bearing vibration measurement device (frequency analyzer, etc.) The size of the abnormality can be inferred through frequency analysis. The measured value varies depending on the use condition of the bearing or the installation position of the sensor, so it is necessary to analyze and compare the measured value of each machine in advance to determine the judgment standard.

3. Bearing temperature

The temperature of the bearing can generally be inferred from the temperature of the outside of the bearing. It is more appropriate if the oil hole can be used to directly measure the temperature of the outer ring of the bearing. Generally, the temperature of the bearing slowly rises as it starts to run, and reaches a steady state after 1-2 hours. The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If the WSBC bearing is checked during operation and the fault treatment is lubricated, and the installation part is suitable, the bearing temperature will rise sharply and abnormally high temperature will occur. At this time, the operation must be stopped and necessary precautions must be taken.WSBC Bearing 23026-2CS online, contact us to buy it.

When the WSBC bearing is damaged and disassembled for inspection, the fault and the cause of the damage can be judged according to the damage of the bearing:

1. Metal peeling off the surface of the raceway

The rolling elements of the bearing and the inner and outer ring raceways are all subjected to periodic pulsating loads, resulting in periodic contact stresses. When the number of stress cycles reaches a certain value, fatigue spalling occurs on the working surfaces of the rolling elements or inner and outer ring raceways. If the bearing load is too large, this fatigue will increase. In addition, if the bearing is installed incorrectly and the shaft is bent, the raceway may peel off. Fatigue spalling of the bearing raceway will reduce the running accuracy of the shaft and cause vibration and noise to the mechanism.

2. Bearing burns

Burnt bearings have tempered colors on raceways and rolling elements. The causes of burns are generally insufficient lubrication, the quality of the lubricating oil does not meet the requirements or deterioration, and the bearing assembly is too tight.

3. Plastic deformation

The uneven pits on the contact surface between the raceway and the roller of the bearing indicate that the bearing is plastically deformed. The reason is that the local stress on the working surface of the bearing exceeds the yield limit of the material under the action of a large static load or impact load. This situation generally occurs on a bearing that rotates at a low speed.

4. Cracks in the bearing race

The reason for the cracks in the bearing race may be that the bearing is too tightly fitted, the outer ring or inner ring of the bearing is loose, the containing part of the bearing is deformed, and the surface where the bearing is installed is poorly processed.

5. The cage is broken

The reasons are insufficient lubrication, broken rolling elements, skewed races, etc.

6. The metal of the cage adheres to the rolling elements

The possible cause is that the rolling elements are stuck in the cage or insufficient lubrication.

7. The raceway of the seat ring is severely worn

It may be that foreign matter has fallen into the seat ring, the lubricant is insufficient or the lubricant grade is not suitable.We provide WSBC Bearing 23028-2CS, click us for more information.

The main factors affecting the damage of WSBC bearings are: load conditions, lubrication conditions, assembly conditions, environmental conditions and material or manufacturing accuracy.

Wuxi Spark Bearing Co.,Ltd has its own brand, the products are of excellent quality and competitive price, and are exported to countries all over the world. In the past ten years of development, the business has developed in more than 100 countries around the world. They all trust our products very much. A large number of bearings are purchased every month. Hope there will be more in the future. Of customers cooperate with us and develop together.