The type of cage used for the slewing bearing has different structural types such as integral cage type, segmented holder or isolated cage. The integral cage or the segmented cage is made of 20 gauge steel or ZL102 cast aluminum alloy. The isolated cage is made of polyamide 1010 resin, ZL102 cast aluminum alloy or QA110-3-1.5 aluminum bronze. With the continuous development of the material industry, nylon GRPA66.25 has also been promoted in the design of segmented cages.
Under normal circumstances, the slewing bearing ring is 50Mn, but sometimes 42CrMo is selected to meet the needs of special applications. GCr15SiMn is generally used for rolling elements. The type of the retainer has different structural types such as integral type, segmented type, and isolated block type. The integral or segmented retainer is cast in 20# steel or ZL102. The spacer block holder is made of polyamide 1010 resin, ZL102 cast aluminum alloy or QA110-3-1.5 aluminum bronze. Sealing material: oil resistant rubber, fluorine rubber, oil resistant nitrile rubber.

The structure of the slewing bearing is commonly used in single row, double row four point contact ball slewing bearing, double row angular contact thrust ball slewing bearing, cross cylindrical roller and cross tapered roller slewing bearing, three row cylindrical roller slewing bearing, ball Columns mix slewing bearings and other different structural forms. The above-mentioned various types of bearings are further divided into different structures such as a toothless type, an external tooth type, and an internal tooth type according to whether or not the toothed portion and the gear are distributed.