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Double row ball slewing bearing with different center diameter is nearly same with double row ball slewing bearing with same center diameter, the differences are the diameter of steel balls and center diameter. upper steel ball is of big diameter but lower one is small, it can also be called 8 point contact ball slewing ring bearings, the upper steel ball mainly carries the axial load and positive tilting moment; The lower ball takes the opposite tilting moment. In order to accommodate the various working condition at different axial load, tilting moments and axial load, the angle of contact would be adjusted accordingly.
Double row ball slewing bearing with different center diameter is nearly same with double row ball slewing bearing with same center diameter, the differences are the diameter of steel balls and center diameter. upper steel ball is of big diameter but lower one is small, it can also be called 8 point contact ball slewing ring bearings, the upper steel ball mainly carries the axial load and positive tilting moment; The lower ball takes the opposite tilting moment. In order to accommodate the various working condition at different axial load, tilting moments and axial load, the angle of contact would be adjusted accordingly.
