Industry trends

Bearing vibration and temperature inspection

Bearing vibration
Bearing vibration is very sensitive to bearing damage, such as peeling, indentation, rust, cracks, abrasion, etc.will be reflected in the vibration. measurement of deep groove ball bearings, so by using a special bearing vibration measurement device (frequency analyzer, etc.) The magnitude of the vibration is measured, and the specific abnormal situation cannot be inferred through the frequency division. 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.
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 deep groove ball bearings slowly rises as the bearing runs, 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 lubrication and installation parts are proper, the bearing temperature will rise sharply, and the bearing will experience abnormally high temperature. At this time, the operation must be stopped and necessary precautions must be taken.
The use of thermal sensors can monitor the working temperature of the bearing at any time, and automatically alarm or stop when the temperature exceeds the specified value to prevent combustion shaft accidents.
High temperatures often indicate that the bearing is in an abnormal condition. High temperature is also harmful to the lubricant of the bearing. Sometimes deep groove ball bearing overheating can be attributed to the lubricant of the bearing. Long-term continuous rotation of the bearing at a temperature exceeding 125°C will reduce the life of the bearing. Causes of high temperature bearings include: insufficient or excessive lubrication, lubricants. Containing impurities, excessive load, bearing ring damage, insufficient clearance, and high friction caused by oil seals, etc.
Therefore, it is necessary to continuously monitor the temperature of deep groove ball bearings, whether it is to measure the bearing itself or other important parts. If the operating conditions remain unchanged, any temperature change can indicate that a malfunction 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 °C or Fahrenheit.
The important bearing means that when it is damaged, it will cause the equipment to stop. Therefore, this type of deep groove ball bearing should be equipped with a temperature detector.
Under normal circumstances, the bearing will have a natural temperature rise just after lubrication or relubrication and it will last for one or two days.