We can offer single-row ball slewing ring, dual-row ball slewing ring, single-row cross-roller slewing ring and tri-row roller slewing ring. And each kind of slewing ring has three types, non-gear, outer gear and inner gear. From small size(d=80mm) to large size(d=4000mm) slewing rings that we could make in our factory., standard or non-standard as per customers special requirement. Id depends on the type of the slewing bearing