Because the actual working conditions are complex and diverse, there is no uniform standard for the selection of rolling bearings and sliding bearings. Rolling bearing due to small friction coefficient, small starting resistance, sensitive, high efficiency, and has been standardized, with excellent interchangeability and versatility, use, lubrication, maintenance are very convenient, in the selection of general priority, so it is widely used in general machines. Sliding bearing itself has some unique advantages. It is generally used in some occasions where rolling bearings cannot, are inconvenient or have no advantages, such as the following occasions:

Rolling bearings, whether ball bearings or roller bearings, are prone to heat and fatigue in heavy loads. Therefore, when the load is large, sliding bearings are often used, such as rolling mill, steam turbine, aero-engine accessories and mining machinery, etc.

For example, the working speed is particularly high, large impact and vibration, and the need to work in water or corrosive media and other occasions, sliding bearings can also be reasonably selected.

For a kind of machinery and equipment, the application of rolling bearing and sliding bearing, each has its advantages and disadvantages, should be combined with the actual engineering reasonable selection. In the past, the large and medium-sized crusher generally uses the cast babbitt alloy sliding bearing, because it can withstand the larger impact load, but also more wear-resistant, stable. Small jaw crusher with rolling bearings, it has high transmission efficiency, more sensitive, easy maintenance. With the improvement of rolling bearing manufacturing technology, large jaw crusher is also mostly used rolling bearings at present.

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