Slewing bearing structure

The rotating support structure, also known as the slewing bearing, is a type of ball or roller bearing used in heavy machinery. It is a larger version of a standard rolling bearing, providing greater load capacity and durability. The rotating support structure is a critical component in many construction machines, helping to support and stabilize the machinery during operation.
These structures are made up of a set of rollers or balls, an inner ring, and an outer ring with teeth that mesh together. The inner ring is bolted to the rotating shaft, while the outer ring is attached to the fixed chassis of the machine. Special bolts with double-sided locking threads and hardened washers or nuts are utilized to ensure the appropriate preload force is achieved during installation. These bolts must meet specific strength requirements and undergo regular inspection to maintain a safe operating environment.
One of the significant advantages of the rotating support structure is its ability to handle multiple types of loads, including axial, radial, and overturning moments. Additionally, these structures are designed to handle low-speed rotation and high-capacity loads, making them a popular choice for construction equipment manufacturers.

Unlike standard rolling bearings, where the rigidity is provided by the bearing seat, in rotating support structures, the rigidity comes from the support structure. This design makes the rotating support structure ideal for use in applications where high rigidity is required.
During the design process, the primary focus is on calculating the load capacity. The contact stress between the rollers or balls and the raceways is the key consideration to ensure the rotating support structure operates safely and reliably. The design must account for the maximum contact stress between the rolling elements and the raceways, and the resulting fatigue life must provide an acceptable safety margin.
At Lasting Bearing Group, we have over 15 years of experience providing high-quality bearings and rotating support structures to suit a variety of applications. Our extensive inventory ensures we can meet your specific needs quickly and efficiently. Contact us today to learn more about our stock and how we can help you find the right rotating support structure for your equipment.