NSK bearing oscillation and temperature discrimination bearing damage

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NSK bearing oscillation and temperature discrimination bearing damage

Source: China Bearing Network Time: 2014-08-10
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In the current period, it is the period of bearing damage; therefore, it is more important to know how to judge the damage. Today I will analyze the oscillation and temperature of the NSK bearing to determine the bearing damage.
First, the bearing oscillation <br> Bearing oscillation is very sensitive to the damage of the bearing; for example, shedding, indentation, rust, crack, wear, etc. will be reflected in the bearing oscillation measurement; therefore; after the selection of special bearing oscillation measuring device (frequency Analyzers, etc.) can measure the large oscillations. ü De Shi Zhi 豢 豢 鲆 鲆 鲆 5 5 5 5 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭The measurement value of the machine is analyzed and compared to determine the specification.
Second, the bearing temperature of the bearing temperature; usually the temperature outside the bearing can be estimated; if the oil hole can directly measure the bearing outer ring temperature; it is more suitable.
Usually; the temperature of the bearing gradually rises with the start of the bearing; the steady temperature is reached after 1-2 hours. The normal temperature of the bearing is different due to the heat capacity of the machine; the heat dissipation; the speed and load are different. If it is smooth, the device is suitable; Will rise sharply; there will be abnormally high temperatures; it is necessary to stop the work; take necessary precautions.
The thermal sensor can be used to monitor the working temperature of the 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.
The high temperature often indicates that the bearing is in an abnormal condition. The high temperature is also harmful to the smoothing agent of the bearing. Sometimes the bearing overheating can be attributed to the smoothing agent of the bearing. If the bearing rotates for a long time beyond 125 °C, the bearing life will decrease. The reasons for high temperature bearings include: smooth lack or over-smooth; smoothing agent. Contains impurities; excessive load; bearing loss ring; lack of clearance; and high friction of oil seal attack.
Therefore, it is necessary to continuously monitor the bearing temperature; 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 the bearing temperature can be measured by means of a thermometer; for example, skf digital thermometer; the bearing temperature can be accurately measured and displayed according to °C or Fahrenheit temperature.
Bearings of importance; meaning that when they are damaged; they will form a stop of the equipment; therefore, the best of such bearings should be fitted with a temperature detector. Under normal conditions; the bearing will have a natural temperature rise just after smoothing or smoothing back. And continue for one or two days.
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