Excavator slewing bearings are the "machine joints" connecting the upper and lower frames, enabling smooth 360-degree rotation. Their core characteristic of the excavator slewing bearings is their ability to simultaneously withstand enormous axial, radial, and overturning moments. They integrate support, rotation, and transmission, often incorporating a drive gear ring. ARI excavator slewing bearings typically employ single-row four-point contact ball bearings (suitable for small and medium-sized excavators) or double-row differential ball bearings (suitable for large and medium-sized excavators), utilizing high-strength alloy steel and advanced sealing and lubrication processes to ensure reliability and longevity under harsh working conditions.
