Some electric motors, When it is no load , the bearing noise is serious, when the electric motor is load , the bearing is good, Do you know why?
Bearing noise is a problem that occurs from time to time during the testing or operation of the electric motors.
For the bearing noise problem, it lies in the quality of the bearings on the one hand, and the failure caused by unreasonable maintenance during operation like the electrical noise electromagnetic interference.
However, there is also a situation will be encountered from time to time.
When the electrical motor at no load has obvious bearing noise, while the motor is loaded, it runs very smoothly.
Today we share with you a brief for the problem of motor noise.
First, the bearings of the electric motor should match the load and the installation type of electric motor.
For example, for small and medium-sized electric motors, most small-size electric motors will be deep groove ball bearings as the first choice, while for heavy-duty electrical motors, and tangential force of the larger load, more cylindrical roller bearings are used in the motor shaft extension end.
For vertical electrical motors, angular contact ball bearings are used at one end of the motor according to the actual specific situation..
Second, the bearing load should match the load of the electrical motor.
The load of the electrical motor directly affects the working clearance of the bearing,
The bearing in the normal working clearance will have a better operating effect, that is, the bearing runs smoothly without mechanical noise long life.
And when the bearing clearance does not meet the requirements, there will be bearing mechnical noise and even shorten the life of serious problems.
Therefore, for the electrical motor bearings, on the one hand, should be in accordance with the actual load of the electrical motor runs to choose the appropriate bearing type, a very important point is the suitability of bearing specifications selection.
For electrical motor bearings, when the electrical motor running, the load of the bearing can withstand does not depend on the fatigue of the material, but on the degree of permanent deformation caused by the load on the raceway.
The shock load acting on a stationary rotating bearing may cause part of the rolling element to be crushed out of shape or cause indentations on the raceway of the mechanical load..
The indentation may be irregularly distributed in the raceway, there may also be a regular distribution in accordance with the rolling body of the same regular distribution of the electrical motor.
If the bearing load role in the bearing rotation after a certain number of turns, the indentation will gradually tend to uniform and regular distribution.
while leading to different degrees of bearing vibration and conductive noise, the stalled position, resulting in bearing clearance becoming large and uneven.
It is affecting the bearing and shaft and end cover fit relationship, and accompanied by bearing heat and burn.
The above is the tips between electric motor and bearing , when it is working.
For more information about electric motors, please kindly contact with electric motor manufacturer as follows;
Veuillez vérifier auprès du fabricant du moteur électrique comme ci-dessous ;
