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 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 ℃ 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.
 (1) bearing at their interference fit the size of the surface of the packet, in each group, in turn bearing the size of their clearance sequential arrangement. The respective shaft or housing bore diameter for the same packet. Interference fit large surface dimensions of the bearing set is selected corresponding to the group with the large diameter shaft or housing bore group, while a small size with a small diameter corresponding group matching. Each corresponding group match, the bearing clearance to take a tight fit, clearance bearing take looser fit. The results of such optional, makes the machine installed in the same batch, bearing with interference is more consistent, however loose, not too tight, clearance is also more uniform, the prestressed bearings after installation in order to ensure appropriate and avoid peristalsis, ferrule Splitting, shock, vibration, or fever due to improper clearance, embrace non-normal bearing failure occurred.
(2) supporting both ends of the journal and the housing bore concentricity and verticality of the end face of the support necessary to strictly guarantee prevent additional load generation. If possible, load the role of mechanical components other than bearings should be slightly away from the more easily damaged end bearing axis system with the rotary member to the extent possible smooth operation.


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