This gear processing solution is designed for the outer circumference of the outer ring, which functions as both the bearing and the driving gear ring. By engaging a small driving gear with the outer teeth of the outer ring, efficient rotational power transmission is achieved. As the small gear rotates, it animates the outer ring, while the inner ring remains fixed to the base frame. This mechanism allows for the rotation of upper structures, such as the upper frame of excavators. Our high-quality steel balls provide four-point contact with both the inner and outer ring raceways, effectively handling axial loads, radial loads, and overturning moments, thus catering to combined force conditions. This product boasts a compact structure, composite load-bearing capabilities, and active transmission features, making it ideal for the power rotation needs of medium and light equipment. As a leading supplier and factory from China, we are committed to delivering top-notch gear solutions that meet diverse industrial demands.