Slewing bearing, like common bearing, has roller and rolling ring with raceway. But, compared with common roller bearing, it has many special features. They can be summarized in the following points:

The size of Double-Row Ball Slewing Bearing is great; its diameter is generally between 0.4m~10m, some even is up to 40m.

Slewing bearing usually bears load from different parts. It doesn't only bear the axial force, radial force, but also tipping moment simultaneously. Therefore, a set of Slewing bearing often completes the functions of many sets of common roller bearing.