Slewing Ring, Slewing Bearing

Slewing bearings are also known as rotary bearings and slewing bearings. Slewing bearing is widely used in real industry, known as: "machine joint", is the two objects need to make relative slewing movement, but also need to bear axial force, radial force, tipping torque of the machinery required important transmission components, its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its slewing accuracy. Compared to general purpose bearings, the rotational speed of the slewing ring is lower.
According to the different friction properties of moving elements, slewing rings can be divided into two categories: rolling bearings and sliding bearings. Among them, rolling bearings have been standardized and serialized, but compared with plain bearings, its radial size, vibration and noise are larger, and the price is also higher. Its basic structure is generally composed of four parts: outer ring, inner ring, rolling element and cage, according to the shape of the rolling element, rolling bearings are divided into two categories: ball bearings and roller bearings.
The application of this type of bearing is commonly found in the structural composition of large construction machinery, such as earthmoving machinery, excavators, stacker-reclaimers, motor graders, road rollers, rock drilling machines, TBMs, etc. Others include concrete machinery, lifting machinery, engineering ships, aerial work platforms, etc.
In addition to various construction machinery, the application scope of slewing bearings has gradually expanded, and equipment platforms such as port equipment, metallurgical equipment, wind power generation equipment, drilling platforms and other equipment platforms have begun to use slewing bearings instead of original bearings on a large scale. In practical applications, according to the use of the bearing, the use conditions, the environment, to select the bearing specifications, dimensions, accuracy and other conditions. Suitable bearings can effectively ensure the life of the slewing ring, which is the premise of the life and feasibility of the slewing ring.