Date: 2013-08-20

The bearing speed the process of high-temperature anomaly judgment

the vibration of the bearing
    Spherical bearings vibration of the bearing damage is very sensitive, such as peeling, creasing, corrosion, cracks, wear, etc. will be reflected in the bearing vibration measurement, so, through the use of special bearing vibration measurement (frequency analyzer) measurable The size of the vibration frequency points can not infer the specific situation of the abnormality. After the measured values due to the conditions of use of the bearing or sensor mounting position, etc. different in advance of each machine measured values were analyzed and compared to determine the criterion.
the temperature of the bearings
    Spherical bearing temperature, generally bearing chamber outside temperature can be inferred, if the hole can directly measuring the temperature of the bearing outer ring is more appropriate bit.
    Typically, the spherical bearing temperature steady state is reached after 1-2 hours with the bearings running slowly began to rise. 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 spherical 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 ℃ 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 unchanged, any change in temperature can be expressed has malfunctioned.
    The regular spherical bearing temperature measured by means of the thermometer, digital thermometer can accurately measure the bearing temperature according ℃ or Fahrenheit temperature fixed units.
    The importance of the spherical bearing means when it is damaged, it will cause equipment downtime, so this type of bearing temperature probe should preferably be retrofitted.
    Under normal circumstances, the outside spherical bearings just lubrication or lubrication after a natural temperature rise and the last one or two days.

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