A bearing vibration
Bearing vibration of the bearing damage is very sensitive, such as peeling, indentation, corrosion, cracks, wear, etc. will be reflected in the bearing vibration measurements, so that through the use of special bearing vibration measurement device (frequency analyzer, etc.) to measure the vibration The size, frequency can not be inferred by the abnormal situation. The measured values ??due to the use of conditions or bearing sensor installation location, etc., and thus requires prior to each machine measurements were determined after analysis and comparison criteria.

Second, the temperature of the bearing
Bearing temperature, generally room temperature outside the bearing can be inferred, the hole can be measured directly if the use of the bearing outer ring temperature, it is more appropriate position.
Generally, the bearing with the bearing operating temperature slowly began to rise 1-2 hours to reach steady state. The normal temperature of the bearing due to heat capacity, heat capacity, speed and load of the machine and different. If the lubrication, install the appropriate department, the bearing temperature will be rapid-rise, there will be abnormal high temperature, when to stop running, take the necessary precautions.
You can always use the thermal sensor to monitor bearing operating temperature, and automatic alarm or stops to prevent burning shaft accident occurred when the temperature exceeds a predetermined value.
Often represented by high-temperature bearings in unusual circumstances. High temperature is also 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. Causes high temperature bearings include: lack of lubrication or over lubrication, lubricant. Contains impurities, the load is too large, the bearing ring damage, lack of space, and high-friction seals and so on.
Therefore, continuous monitoring of bearing temperature is necessary, whether it is measured bearing itself or other important parts. If you are under the same operating conditions, any change in temperature may indicate a fault has occurred.
Regular amount bearing temperature measured by means of a thermometer, such as skf digital thermometer can accurately measure bearing temperature and fixed in accordance with ℃ or Fahrenheit units.
The importance of bearing, which means when it is damaged, can cause equipment downtime, so the best type of bearing temperature detectors should be installed.
Under normal circumstances, the bearing lubrication or relubricated immediately after the temperature rise naturally and be continuous with one or two days.