Materials of the spherical bearing metallurgical quality is the impact of the main factors of early failure of rolling bearings. With the progress of Metallurgical Technology (such as bearing steel, vacuum degassing etc.), improving the quality of raw materials. The proportion of raw materials quality factors of bearing failure analysis has dropped significantly, but it is still one of the main factors of bearing failure. Analysis of bearing fault selection must consider whether it is appropriate or.
The spherical bearing failure analysis is the main task of the large amount of background material on, data analysis and fault mode, identify the main factors causing bearing failure, in order to make targeted improvement, extended bearing service period, in order to avoid emergencies bearing early failure.
The spherical bearing fatigue life according to the provisions of formula and calculation rules calculated as fatigue life calculation, the total numerical rules to rotate the inner ring or shaft (the outer ring or ring is fixed) numerical total rpm.

In accordance with the provisions of the standard test methods of rolling bearing fatigue life test procedures, in the use of performance to meet for a method under test machine requirements, sampling test of fatigue life of a bearing, the actual test life obtained from the test data processing, namely as subjects, the fatigue life of the number of the spherical bearing bearing represent.
Rolling bearing fatigue life test is to maximize the full lubrication inhibiting the abrasion factor of rolling bearing, the load and speed enhancement to an enhanced fatigue life test method for outstanding bearing fatigue factors.
The calculation method and the fatigue life test of the spherical bearing fatigue life are complementary to each other, the two results are corresponding enough.
But in reality, such as for each specific occasions, have a sufficient number of extraction bearing life test, to verify the selected bearing is suitable or not, this is very big in the economy, time and amount of labor, so the test method of the spherical bearing life is very necessary or important the case is used, in most cases, the standard life calculation method to estimate the service life of the bearings, with a sufficient degree of dependency.