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Oscillation and temperature discrimination of NTN thrust ball bearings
Source: China Bearing Network Time: 2017-11-02
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Second, the temperature of the bearing NTN thrust ball bearing temperature; generally the temperature outside the bearing can be estimated; if the oil hole can directly measure the outer ring temperature of the NTN thrust ball bearing; it is more suitable.
Generally; the temperature of the NTN thrust ball bearing gradually rises with the beginning of the bearing work; the steady temperature is reached after 1-2 hours. The normal temperature of the NTN thrust ball bearing is due to the heat capacity of the machine; the heat dissipation; the speed and load are different. If it is smooth, the device The part is suitable; the bearing temperature will rise sharply; abnormal high temperature will occur; it is necessary to stop the work; take necessary precautions.
The thermal sensor can be used to monitor the working temperature of the NTN thrust ball bearing at any time; and when the temperature exceeds the specified value, it can automatically alarm or stop to avoid the burning of the shaft event.
The use of high temperature often indicates that it is in an abnormal condition. High temperature is also harmful to the smoothing agent of NTN thrust ball bearings. Sometimes the bearing overheating can be attributed to the smoothing agent of the bearing. If the bearing rotates for more than 125 °C for a long time, it will reduce the bearing life. The causes of high temperature bearings include: smooth lack or overheating; smoothing agent. Contains impurities; excessive load; NTN thrust ball bearing loss ring; lack of clearance; and high friction of oil seal attack, etc.
Therefore, it is necessary to continuously monitor the temperature of the NTN thrust ball bearing; whether it is measuring the bearing itself or other important parts. If it is in the same working conditions; any temperature change can indicate that the problem has occurred.
The timing measurement of NTN thrust ball bearing temperature can be measured by means of a thermometer; for example, a digital thermometer; the bearing temperature can be accurately measured and displayed in °C or Fahrenheit temperature.
Importance of NTN thrust ball bearings; meaning that when it is damaged; it will form a stop of the equipment; therefore, the most suitable type of such a bearing should be equipped with a temperature detector.
Under normal circumstances; NTN thrust ball bearings will have a natural temperature rise just after smoothing or smoothing and continue for one to two days.
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