1, bearing vibration
Vibration of rolling bearings is very sensitive to damage to the bearing, such as peeling, indentation, corrosion, cracks, wear, and will be reflected in the bearing vibration measuring, by using a special bearing vibration measurements (frequency analyzer) to measure the vibration the size of the frequency points can not be inferred abnormal circumstances. The measured values ??due to the conditions of use of the bearing or sensor installation location is different, so in advance to determined criteria analysis and comparison of the measured value of each machine.
2, bearing temperature
Rolling temperature, generally the temperature of the outside of the bearing housing can be inferred that if the use of the oil hole can directly measure the temperature of the bearing outer ring, even suitable.
Typically, the temperature of the bearings with the bearing running start to rise slowly 1-2 hours after reaching steady state. The bearing normal temperature of machine heat capacity, heat capacity, speed and load and the type. Lubrication, install the appropriate department, the bearing temperature will rapid-rise abnormally high temperatures, there will be time to stop running, to take the necessary precautions.
Thermal sensor can monitor the bearing temperature alarm or stop automatically when the temperature exceeds the specified value to prevent burning shaft accident.
Often with high temperature bearing in unusual circumstances. Temperature is harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing temperature over 125 ℃ even move to reduce long-term bearing life. The heat caused by bearing reasons include: lack of lubrication or excessive lubrication, lubricants. Contains impurities, the load is too large, the bearing ring damage, lack of space, and produce high-friction oil seal.
Therefore, continuous monitoring of bearing temperature is necessary, whether it is a measure of the bearing itself or other important parts. If any temperature change can be expressed in the same operating conditions in the case a failure has occurred.
The bearing temperatures regularly measured by means of the thermometer, such as SKF digital thermometer can be accurately measured bearing temperature according to a given unit of ° C or Fahrenheit display.
The importance of bearings, which means that when it is damaged, it will cause equipment downtime, the best type of bearing temperature detectors should be installed.
Under normal circumstances, bearing in just lubrication or re-lubrication after there NATURAL temperature rise and continue for one or two days.
 
 



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