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Bucket wheel excavators and stacker reclaimers use large diameter (over 196 in) Ball Roller Combination Slewing Rings as main bearings.

 

Cross section of a typical main Slewing Ring. This unit is a combination type with external toothing and a diameter of 189 in.

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In this combination type Slewing Ring, heavy axial loading is carried by the roller raceway. The ball raceway provides support for light radial loads..


 


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Slewing Rings
Slew Drives


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