In bucketwheel-stacker/reclaimer the biggest range of our slewing rings is used:

The gigantic bearings have an outside diameter of 5.2 m and every single slewing ring has a weight of more than 5000 kg. These bucketwheel-stacker/reclaimer with extension arms of up to 50 m are able to heap up or clear away more than 6000 m³ coal, iron ore or lime per hour.