The core advantage of VI / VSI series slewing bearings lies in the professional four-point contact ball structure. Precisely machined raceways allow each steel ball to form four stable contact points under load, enabling the bearing to simultaneously support combined axial loads, radial loads and overturning moments. This balanced force distribution greatly improves structural rigidity and operational stability compared with ordinary ball bearings. Even under frequent cyclic rotation, alternating loads and continuous working conditions, the VI and VSI series maintain smooth rotation with low vibration and minimal mechanical fatigue, ensuring long-term consistent dynamic performance.

Different from external gear slewing bearings, the VI / VSI series adopts an internal gear layout on the inner ring. The precision involute gear teeth are finely machined and heat-treated to achieve high meshing accuracy and low backlash. The internal gear structure effectively saves installation space, protects gear teeth from external impact, dust and wear, and creates a more compact and neat mechanical layout. It allows direct matching with drive pinions for stable, quiet and efficient power transmission, which is highly suitable for equipment with limited assembly space and strict precision requirements.