The bearing operation check Troubleshooting

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Operation check items the rolling bearing sound, vibration, temperature, state of lubrication, etc., as follows:

First, the sound of the rolling bearing

Sounding to check the size and sound quality of the rolling bearing in operation sound, bearing even a slight peeling or other damage, also making an abnormal sound and the irregular tone, with the measured sound able to distinguish. ball roller bearing

Second, the vibration of the bearing

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 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.

Third, the temperature of the bearings

The bearing temperature, generally, the outside temperature of the bearing chamber can be inferred, and if the use of suitable hole can directly measure the temperature of the bearing outer ring, even more bit. Typically, the temperature of the bearings with the start of the operation to rise slowly reached steady state after 1-2 hours. 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. According to a large number of test data, Table 4-1 lists a variety of machinery in the average temperature of the work when the outer ring bearing for reference. As the temperature is affected by the influence of lubrication, rotational speed, load, environment, the values in the table represents the approximate temperature range. Using thermal sensors can wor k at any time to monitor bearing temperature, and automatic alarm when the temperature exceeds the specified value to the household or stop to prevent burning shaft accident. ceramic bearings