Slewing bearing are the core rotating load-bearing components of various construction machinery, new energy equipment, and special equipment. Steel balls serve as the core rolling elements, directly determining the smoothness and load-bearing stability of equipment rotation. Plug holes, plug, and pins are key auxiliary structures to ensure the sealing, stability, and anti detachment of the internal structure of Slewing bearing.

The plug hole is a specialized assembly hole reserved on the outer side of the slewing bearing raceway, with the core function of providing a passage for steel ball assembly. Due to the closed annular structure of the slewing bearing raceway, it is not possible to directly load steel balls in bulk. During the production process, workers use reserved plug holes to sequentially load steel balls of matching specifications into the interior of the annular raceway, completing precise assembly of the rolling elements. This is an indispensable process hole in the production and assembly of slewing bearings.

After the steel ball is loaded, a special plug should be used to completely seal the plug hole. The plug is processed with precision dimensions that are compatible with the supporting body, which can tightly fit the hole position and effectively block impurities such as dust, mud, rain, etc. from entering the raceway during equipment operation. At the same time, it prevents internal lubricating grease leakage, ensuring that the raceway and steel ball are always in a good lubrication and cleaning environment, avoiding problems such as jamming, wear, and corrosion.

To eliminate the hidden danger of plug, loosening, and detachment caused by long-term operation vibration of the equipment, positioning pins will be installed for secondary locking after the plug is completed. The pin penetrates through the fixed blocking and supporting base, forming a rigid locking structure, greatly improving the reliability of blocking fixation, avoiding faults such as hole loosening, steel ball displacement, and structural failure from the root, effectively extending the overall service life of the slewing support, and ensuring the continuous and stable operation of the equipment. The complete structure assembly is simple, highly protective, and stable, which is an important guarantee for the safe operation of the slewing bearing.

Xuzhou Wanda slewing bearing Co., Ltd.,  as a national high-tech enterprise, has been deeply engaged in the research and development, production, and sales of Slewing bearing for many years. It has a complete vertical integrated production system and significant advantages in structural technology, product quality, and delivery services. Its blocking, pin matching structure, and overall product performance are all at the leading level in the industry.