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Shanghai Shang Shaft Bearing Quality Inspection Institute Co., Ltd.

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Address: 301 Shangxue Road, Jiading District, Shanghai

What effect does vibration and temperature have on bearings?

2020-07-29 09:53


Effect of Vibration on Bearings

In normal use,VibrationBearing damage is very sensitive, spalling, indentation, corrosion, cracks, wear and so on will be reflected in the bearing vibration measurement. Therefore, the size of the vibration can be measured by using a special bearing vibration measuring instrument (frequency analyzer, etc.), and the specific situation of the abnormality can be inferred from the frequency distribution. The measured value is different due to 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.


Effect of temperature on bearings


High temperature often indicates that the bearing is in an abnormal condition. High temperatures are also detrimental to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing is connected for a long time at a temperature exceeding 125 ℃, the bearing life will be reduced.Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricants. Contains impurities, excessive load, bearing damage, insufficient clearance, and high friction caused by oil seals, etc..

In the process of using the bearing is easy to appear the phenomenon of temperature rise.

When the bearing temperature rises, first judge whether it is misoperation, if it does rise, the following treatment should be done:
1, check the cooling water pressure, water flow and piping system is normal. If the water pressure is low, the filter may be blocked and cannot be handled in time, the machine can be shut down and put into use when it is confirmed to work.
2. The oil pressure of the governor should be checked. If the oil pressure is low, the cooling water hydraulic valve may be closed.
3. Check whether the bearing has abnormal sound, and check whether the bearing swing is abnormal.
4. Take oil samples to observe whether there is any change in oil color, and carry out tests to see if there is any deterioration. If the deterioration is confirmed, stop the machine and replace the new oil.

5. Check whether the oil level of the oil mark is normal. If not, check whether the oil drain valve of the oil tank is closed tightly. If it has been closed tightly, oil should be replenished. If it is oil leakage of sealing rubber pad, it should be shut down for treatment.

Therefore, it is necessary to continuously monitor the bearing temperature, whether it is measuring the bearing itself or other important parts. If the operating conditions are unchanged, any temperature change may indicate that a fault has occurred.

The bearing temperature can be measured regularly with the help of a thermometer, such as a digital thermometer, which can accurately measure the bearing temperature and display it in units of ℃ or Fahrenheit.The importance of the bearing means that when it is damaged, it will cause the equipment to stop, so this kind of bearing should be equipped with a temperature detector.