These bearings are combined cylindrical roller radial/thrust bearings. They consist of one one-piece and one two-piece ring as well as two roller sets to accommodate axial loads, and one roller set to accommodate radial loads. Polyamide cages separate the axially loaded rollers. The bearings are not preloaded and have integral lip seals.
Triple row roller slewing bearings can be manufactured:
• without a gear
• with an internal gear
• with an external gear
Triple row roller slewing bearings are sensitive to the deflections of associated components. As a result, an extremely stiff and accurately manufactured support structure is required if the bearing is to achieve maximum service life