1. Vibration of rolling bearings
Rolling bearings are very sensitive to vibration of the bearing damage, such as peeling, creasing, corrosion, cracks, wear, etc. will be reflected in bearing vibration measurement. So special vibration measurement can measure the degree of vibration frequency, and then we can know the unusual circumstance. The measured values ??due to bearing the use conditions or the sensor mounting position, etc., requires prior to each machine measured values ??were analyzed and compared to determine the criteria.
2. The temperature of rolling bearings
The temperature of rolling bearings can be inferred of the outside temperature generally, and if the oil hole can be used to measure the temperature of outer ring, it will be better. Typically, the temperature of bearing began to rise slowly as the bearing operation reaches a steady state after 1-2 hours. The normal temperature of the bearing is different due to the heat capacity of the machine, the amount of heat, the rotational speed and load. If well lubricated and installed, the temperature will abrupt rise. The equipment should be stopped at this time and take necessary precautions. Thermal sensors can monitor bearing temperature, and automatic alarm or stop to prevent burning shaft accident occurred when the temperature exceeds the specified value. High temperatures often said that bearing in an abnormal situation. The high temperature is also harmful to the bearing lubricant. Sometimes overheating can be attributed to the bearing lubricant. Bearing in over 125 ℃ temperature long-term even move to reduce bearing life. High-temperature bearings caused by reasons including: lack of lubrication or over lubrication, lubricant. Contains impurities, the load is too large ring of bearing loss, lack of space, and oil seals produce high friction, etc.
Continuous monitoring bearing temperature is therefore necessary, in either measurement bearing itself or other important parts. If it is in the case of operation conditions unchanged, any change in temperature can be expressed a failure has occurred. Regularly the temperature is measured by bearing temperature thermometer, such as the skf digital thermometer can accurately measure the bearing temperature units displayed by ℃ or Fahrenheit given.
The importance of the bearing, which means when it is damaged, will cause equipment downtime, so this type of bearing temperature probe should preferably be retrofitted.
Under normal circumstances, the temperature of bearings which have been just lubricated or re-lubricated will rise and last one or two days.
 



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