rolling bearing has some shortcomings

Rolling bearing also has some shortcomings, mainly:

1. Rolling bearing load bearing capacity than the same volume of spherical plain bearings is much smaller, and therefore, bearing large radial dimension. Therefore, in the case of heavy load to bear and requiring small radial dimension, compact structure requires occasions <such as crankshaft bearings), the use of sliding bearings;

2. Rolling bearing vibration and noise is large, especially in the use of late particularly significant. Therefore, demanding precision, without Xu Youzhen moving occasion, Rolling difficult to competent, generally used in sliding bearings better.

3. Rolling bearing metal shavings and other foreign matter is particularly sensitive, bearing enters the foreign body, it will have a greater intermittently vibration and noise, also cause early damage. 

In addition, because the metal clip Rolling impurities also easy possibility of early damage occurs. Early damage does not occur even if the life of rolling bearings there are certain limits. In short, the life of rolling bearings is shorter than the plain bearing. However, Rolling and plain bearings compared advantages and disadvantages, each occupy a certain application of occasions. Therefore, the two can not completely replace each other, and each to a certain direction, to expand their fields. However, due to the outstanding advantages of rolling bearings, quite latecomers trend. Currently, the rolling bearing has developed into the main types of mechanical support, the application more widely.