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Bearing vibration is very sensitive to the damage to the bearing, such as peeling, creasing, corrosion, cracks, wear, etc. will be reflected in bearing vibration measurement, through the use of special bearing vibration measurement (frequency analyzer) to measure the vibration The size of the frequency points can not infer the specific situation of the abnormality. After the measured values ââdue to the conditions of use of the bearing or sensor mounting position, etc. different in advance of each machine measured values ââwere analyzed and compared to determine the criterion.single ball bearing
The bearing temperature, generally, the outside temperature of the bearing chamber can be inferred, and if the use of the hole can be measured directly imported bearing outer ring temperature, is more appropriate.
Typically, the temperature of the bearing as the bearing is running slowly began to rise, 1-2 hours after the steady state is reached. The bearing normal temperature varies due to the heat capacity of the machine, the amount of heat, the rotational speed and load. If appropriate lubrication, installation, bearing temperature will rise abrupt, abnormal high temperature must stop running, take the necessary precautions.
Thermal sensors can monitor the 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 bearing overheating can be attributed to the bearing lubricant. If the bearing in the long term even transfer over 125 â temperature reduce bearing life. High-temperature bearings caused by reasons including: lack of lubrication or over lubrication, lubricant. Contains impurities, the load is too large, bearing loss of the ring, the lack of space, and oil seals produce high friction, and so on.
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 unchange d, any change in temperature can be expressed has malfunctioned.tool bearings
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