Liebherr roller bearing slewing rings are suitable for medium to high loads. They are designed in a triple-row model with two axial and one radial roller raceway as standard, but other variations are also possible depending on the application. The linear load transfer allows them to transfer much higher forces in the same installation space compared to four-point bearings and makes them particularly suitable for larger diameters. Roller bearing slewing rings have a high power density, but tend to place higher demands on the stiffness of the adjacent structure.
Roller bearing slewing rings by Liebherr can be supplied in all gearing versions. Typical applications are mining excavators or large crawler cranes, offshore and mobile harbour cranes. Roller bearings by Liebherr have also been tried and tested in drilling rigs and deep foundation machines.