Daily Inspection Of ZZ Bearings

Time：2021.01.27  Source：Roller Bearings Suppliers

Inspection Of ZZ Bearings    

The use conditions of ZZ bearings or sensor installation positions are different, so it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment standard, and finally, check according to the temperature of the needle roller bearing.

The temperature of ZZ Bearings    

The temperature of needle roller bearings can generally be inferred based on the temperature of the outside of the needle roller bearing. It is more appropriate if the oil hole can be used to directly measure the temperature of the outer ring of the bearing.

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Generally, the temperature of the needle roller bearing slowly rises as it starts to operate and reaches a steady state. The normal temperature of the needle roller bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and installation parts are proper, 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. According to a large number of test data, the average value of the outer ring temperature of the bearings in various machinery is for reference. Because temperature is affected by lubrication, speed, load and environment.

The vibration of ZZ bearing

As reflected in the vibration measurement of ZZ bearings, bearing vibration is very sensitive to the damage of ZZ bearings. Therefore, by using a special ZZ bearing vibration measuring device (frequency analyzer, etc.), the magnitude of the vibration can be measured, and the frequency can not be divided. Infer the specific circumstances of the exception. Since the measured values are different due to the use conditions of the bearing or the installation position of the sensor, it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment standard. If the oil hole can be used to directly measure the temperature of the outer ring of the bearing, it is more appropriate. Under normal circumstances, the temperature of the bearing can generally be inferred based on the temperature of the outside of the ZZ bearing. If the lubrication and installation parts are appropriate, the temperature of the ZZ bearing will rise sharply and abnormally high temperature will occur. At this time, the operation must be stopped and necessary precautions must be taken. Generally, the bearing-to-bearing temperature rises slowly with the operation and reaches a steady-state after 1-2 hours. The normal temperature of ZZ bearing is due to the heat capacity of the machine.

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The sound of ZZ bearing 

Even if the ZZ bearing is slightly damaged such as peeling, it will emit abnormal and irregular sounds. Therefore, it can be distinguished by a sound meter. The sound meter is used to check the size and sound quality of the rolling sound of the bearing in operation. To prevent the effect in advance, the last thing is to check the temperature of the ZZ bearing when it rotates to prevent the occurrence of combustion shaft accidents.

Causes and prevention methods of ZZ bearing corrosion ZZ bearing corrosion is caused by various internal and external factors, which can be summarized as follows:

1. Metal surface finish (differential oxygen concentration, battery corrosion).

2. The chemical composition and structure of the metal material itself.

3. The composition and pH of the solution in contact with the metal surface;

4. Ambient temperature and humidity.

5. Various environmental media in contact with metal surfaces.

6. Other people's sweat is also the cause of corrosion of ZZ bearings, and its PH value is 5-6. Therefore, in order to prevent corrosion caused by hand sweat, installation and production personnel should wear gloves and do not touch ZZ bearings with their hands.

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 Spherical  Roller Bearings, Send a quote and get the latest price of cheap bearings from ZZ Bearings.