Slewing Bearing with External Gear

External gear slewing bearings are positioned in the industrial drive sector as high-performance, integrated rotary solutions. Its basic structure comprises a bearing outer ring with an integral external gear, an inner ring, and precision rolling elements. The external gear on the outer ring meshes directly with a drive pinion, thereby seamlessly integrating support, rotation, and drive functions. The product’s key advantages lie in its spacious interior design that maximizes usable volume and its exceptionally high transmission efficiency. Induction hardening raises the gear tooth surface hardness to HRC 50–60, ensuring outstanding fatigue resistance and operational accuracy even under high-frequency start-stop cycles and heavy-load conditions. As a result, it serves as a critical component for enhancing the overall structural rigidity of the machine. This series of products usually use 42CrMo or 50Mn high-strength forgings. The technical specifications cover an ultra-wide range of 200mm to 5000mm in diameter, and support a variety of internal structure configurations such as single volleyball, double volleyball and cross rollers. In design, the external tooth layout not only simplifies the installation position of the drive motor, but also greatly reduces the processing difficulty and assembly cost of the mechanical structure. With excellent sealing design and surface anti-corrosion treatment, the product can easily adapt to harsh environments such as high salt spray in the ocean and high dust in construction sites. Its modular design and standardized bolt hole distribution provide customers with excellent economic benefits, not only shortening the research and development cycle, but also significantly extending the maintenance cycle of the whole machine by reducing friction loss.