A slewing ring is a machine element that is used to enable rotary motion around an axis. It is a type of rolling bearing consisting of an inner ring and an outer ring connected by a series of balls or rollers. The inner ring is often attached to the component to be rotated, while the outer ring remains stationary.
Slewing rings have a flat, disk-like shape and are often used in applications where precise, stable rotation is required, such as cranes, excavators, robots, wind turbines and other heavy machinery.
The design of the slewing ring enables low-friction rotation with high load capacity and rigidity. Slewing rings can also be equipped with seals or lubrication systems to extend their service life and ensure reliable performance.
There are different types of slewing rings, including ball slewing rings, roller slewing rings and combined slewing rings, depending on the specific requirements of the application. Choosing the right slewing ring depends on factors such as load, speed, accuracy and environment.