Deep groove ball bearing damage solution

In order to ensure that the bearing can run normally and for a long time, it is necessary to maintain and repair the bearing regularly.

In general, if the deep groove ball bearings are used correctly, they can be used until the fatigue life is reached. However, there will be accidents that are prematurely damaged and cannot be used. This early damage, as opposed to fatigue life, is called the quality use limit for failures or accidents. Many of them are caused by inadvertent installation, use, and lubrication, and foreign objects intruding from the outside are insufficiently studied for the thermal effects of the shaft and the outer casing.

Impact sound of rolling element and its control method When a larger type of ball bearing or outer spherical bearing runs at low speed under pure radial load, the rolling element in the non-loading zone will impact the cage or the rolling element due to the small centrifugal force of the rolling element The raceway makes noise. But as the speed increases, the sound will disappear. The rolling sound of the bearing and its control method The rolling sound is a kind of slippery continuous sound that the rolling element rolls on the rolling surface when the bearing is running, which is the unique basic sound that all outer spherical bearings will produce. The general deep groove ball bearing sound is the rolling track sound plus other sounds. The ball bearing's raceway sound is irregular, the frequency is above 1000Hz, its main frequency does not change with the speed, but its sound pressure level increases with the increase of the speed.

Regarding the damage state of the bearing, for example, the jam of the ferrule of the roller bearing, as a cause, the lubricant is insufficient, unsuitable, the defect of the oil supply structure, the foreign matter intrusion, the bearing installation error, the deflection of the shaft If it is too big, there will be coincidences of these reasons.

Therefore, it is difficult to know the true cause of the damage by only investigating the bearing damage. However, if you know the mechanical use of the bearing, the conditions of use, the structure around the bearing, and the situation before and after the accident, combined with the damage state of the bearing and several reasons, it can prevent similar accidents from happening again.

Under normal circumstances, the condition of the bearing rolling surface and the mating surface, and the wear state of the cage, etc., are not damaged or abnormal, especially to observe the running track of the raceway surface. To determine whether the bearing can be used again, consider the degree of damage to the bearing. Please identify the cause according to the damage of the deep groove ball bearing and formulate countermeasures. In addition, the inspection results, if there are several defects, the bearing can no longer be used, need to replace the new bearing.