This gear processing mechanism features a unique design where the outer circumference of the outer ring functions as both the bearing and the drive gear ring. By engaging the small driving gear with the outer teeth of the outer ring, efficient rotational power transmission occurs. As the small gear rotates, it causes the outer ring to turn, while the inner ring remains fixed to the base or frame. This rotation drives the connected upper structure, such as the excavator's upper frame, enhancing operational efficiency. The steel balls provide a four-point contact with the inner and outer ring raceways, allowing them to simultaneously support axial loads, radial loads, and overturning moments, effectively addressing the requirements for combined force conditions. This product demonstrates a compact structure, composite load-bearing capabilities, and dynamic transmission, making it an excellent choice for the power rotation needs of medium and light equipment. As leading suppliers and a trusted factory in China, we ensure high-quality solutions tailored to your demands.