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The "causes, appearances and countermeasures" of bearing temperature is too high

Source: China Bearing Network Time: 2017-10-14

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Bearings in the process of operation are often inevitable problems; for example, the bearing temperature is too high is an example; in this difficult problem; buy bearing personnel should choose how to pay attention to and should attack this problem after the purchase of bearings; Professionals have analyzed and answered this problem; the details are as follows:
1. Reasons for excessive bearing temperature:
(1) Oil quality deterioration; the oil itself is not clean or the oil is degraded during operation; if the water in the oil is added, the acidity of the oil will increase; the smoothing effect of the oil will be lowered; the bearing bush will be corroded; and the bearing temperature will rise.
(2) Bearing cooling water stop.
2, the appearance:
(1) The machine's water wheel mechanical fault light plate is bright; the external temperature indicating the bearing temperature rises; signal relay measures.
(2) An error signal indicating an increase in bearing temperature.
(3) Thermometer disk (bulging large thermometer) Black needle and yellow needle coincide or exceed the yellow needle.
(4) There is an alarm bell ringing.
3, disposal should be when the bearing temperature is too high; the first discriminating whether it can be mistaken; if it is too high; should be done as follows:
(1) Check if the bearing can have abnormal sound; and check whether the bearing swing can be abnormal.
(2) Check if the oil level oil level is normal; if it is abnormal; check if the oil drain valve can be closed. If it is closed, it should be replenished; if it is leaking oil, it should be stopped.
(3) Take oil samples to investigate whether the oil color can be changed; and carry out tests to see if it can be changed. If it is recognized that it is degraded, it should stop replacing with new oil.
(4) The oil pressure of the governor should be checked; if the oil pressure is low, the cooling water hydraulic valve can be closed.
(5) Check the water pressure of the cooling water; whether the water flow and the pipeline system can be normal. If the water pressure is low, it can be blocked by the filter; if it cannot be disposed of in time; it can be stopped; when it is admitted that it can work;

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