Analysis of common faults of cylindrical roller bearings caused by vibration temperature

Release time: 2023/2/21 8:42:15

In the use of bearings, it can be said that the impact of vibration and temperature on cylindrical roller bearings is very great. Let's first look at the impact of bearing jitter on bearings. Vibration damage to bearings can be said to be quite sensitive, falling off, stamping, rust, crack, damage, etc., can be reflected in the bearing vibration measurement. Therefore, by using a special cylindrical roller bearing vibration measuring device can measure the size of the vibration, according to the operating frequency can not speculate abnormal actual situation. The measured standard value is different due to the application range of bearings or the installation way of sensors, so the measurement results of each equipment need to be analyzed in advance to determine the criteria.
We then look at the impact of temperature on bearings.
Continuous high temperature often indicates that the bearing has been in an abnormal phenomenon. Continuous high temperature also harms the lubricant of bearings. Sometimes the bearing overtemperature can be attributed to the bearing lubricant. If the bearing at a temperature higher than 125℃ long-term even football transfer reduces the service life of the bearing. The main reasons for continuous high temperature bearings include: insufficient or too much wetting, lubricants. Contains residue, load is too large, bearing damage ring, void is not enough, and skeleton seal caused by high friction.
Therefore, continuous detection of bearing temperature is very necessary, whether it is tunnel detection of cylindrical roller bearing itself or other very important parts. A slight change in temperature can indicate a fault if the operating standard is constant. The timely tunnel detection of bearing temperature can be achieved by means of thermometers, such as digital thermometers, which can accurately measure the bearing temperature and indicate it according to the temperature of ° C or Fahrenheit. Significance of the bearing, meaning that when its work is destroyed, it will lead to the shutdown of the machine, so this bearing should be modified temperature detector.
In order to maintain a good condition and maintain the original state of bearings for as long as possible, it is necessary to carry out cleaning and maintenance to prevent safety accidents, ensure the reliability of operation, and improve the production and operation and rationality. Maintain the operation standard corresponding to the operation requirements of mechanical equipment, and carry out regularly. Basic content monitoring operation, filling replacement of new lubricants, inspection of disassembly on time.
(1) The maintenance of the rotating sound, vibration and temperature of the bearing under running condition and the maintenance of the characteristics of the lubricant and the identification of the new stage of lubricant replacement.
(2) Bearing overhaul When the mechanical equipment is repaired and replaced on time, the bearing taken out should be inspected adequately, and the condition of the track surface and whether there is damage and whether it can be used again should be checked.
Maintenance items in operation include bearing rotation sound, vibration, temperature, lubricant conditions, etc.
(1) bearing rotation sound
The use of audiophones to investigate the noise size and timbre, even if a few cylindrical roller bearings have abnormal and irregular sounds under the condition of exhaustion and fall off, it is possible to hear them if they are skilled.
(2) bearing vibration
The bearing vibrator is used for quantitative analysis, measurement and analysis of vibration amplitude, working frequency, etc., so as to speculate the damage of the bearing. But because the application range of bearings is different from the measuring position, mechanical measurement values must be flexibly used to determine the judgment standard.
(3) bearing temperature
Bearing temperature usually rises slowly after the end of operation and becomes saturated after a period of time. The constant temperature of the bearing varies due to the thermal conductivity, calorific value, speed ratio and load of mechanical equipment. The bearing temperature rises abnormally when it does not reach saturation. Considering the reasons shown in the following page, the operation should be terminated and necessary preventive measures should be formulated.
(4) Refinement
It is useful to investigate the plant oils and greases in use for mastering the running condition of bearings. Naturally, it can distinguish the leakage, color loss and deterioration of plant grease or oil from the moisture, dirt and vermicelia contained in it. When you feel that there is lubricant leakage and dirt infiltration such as vermicelia and metal powder, you should regularly check the leakage amount, temperature and vibration of cylindrical roller bearings and other quantitative analysis and observation. If you feel abnormal, you should carry out initial maintenance.
 
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