The YNF17881 Swing Bearing is a heavy-duty slewing ring bearing designed specifically for Kobelco SK380-10 excavators. Installed between the upper structure and undercarriage, it plays a critical role in supporting machine weight while enabling smooth and controlled rotation during operation.
Manufactured using high-strength steel with precision-machined raceways, this swing bearing is capable of withstanding combined axial loads, radial forces, and overturning moments generated during digging, lifting, and slewing movements. The raceways undergo advanced heat treatment to enhance wear resistance and extend service life in harsh construction and mining environments.
The YNF17881 slewing ring bearing is widely used in professional repair workshops and large-scale maintenance projects, offering reliable performance, stable rotation, and long-term durability as an aftermarket replacement for SK380-10 excavators.