The 021 and 022 series are standardized external gear double-row ball slewing bearings designed for medium and heavy-duty rotary mechanical systems. Adopting a dual-row steel ball arrangement and integrated external gear structure, these slewing rings combine enhanced load-bearing capacity and integrated transmission performance. Optimized for continuous cyclic rotation and high-stability power output scenarios, the series delivers reliable rigidity, precise meshing performance and extended service life, serving as a mainstream core transmission component for various engineering and industrial rotary equipment.

Distinct from single-row bearing structures, the 021/022 series adopts a scientific double-row ball layout design. The upper and lower rows of precision steel balls cooperate with finely machined hardened raceways to form a balanced force-bearing system. This structural upgrade greatly improves the bearing’s overall rigidity and anti-deformation ability, enabling it to stably withstand superposed axial loads, radial loads and large overturning moments. It maintains uniform stress distribution during long-term high-frequency operation, effectively suppressing rotational deflection, structural vibration and rolling wear, and adapting to long-cycle continuous working conditions with high stability requirements.