Date: 2013-08-20

Chock inspection and analysis of the temperature noise

The temperature of the bearing seat, 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. Today, I told everyone about the little knowledge about the bearing temperature checks.
Typically, the temperature of the bearing as the bearing is running slowly began to rise after 1-2 hours to reach a steady state. 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 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 of the bearing housing 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.
Can not be used when the above two types of low-noise bearing noise can be relatively small bearings. The specific comparative basis is as follows:
1) (friction) of the ball bearings, the noise is lower than the roller bearings, bearing housings relatively small bearings noise is lower than the relatively more bearings;
2) using entity holder bearing seat noise than using stamping relatively low cage bearings; plastic cage bearing noise ratio using the above two holder bearings are low; ball number, a thickness of the outer ring, noise is also smaller,
3) the high accuracy of the bearing, particularly with a higher accuracy of the rolling element bearings, the bearing seat of the noise than the low accuracy noise is relatively small,
4) small bearing noise is relatively small than large bearing noise bearings.

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