Slewing range of applications

Slewing range of applications
Slewing ring wide range of applications, mainly for lifting machinery (truck cranes, tower cranes, etc.), construction machinery (excavators, loaders, etc.), transportation machinery, materials processing machinery, metallurgical machinery, food processing machinery, as well as military equipment (tanks, anti-aircraft artillery, radar, rocket launchers, etc.), medical equipment, scientific equipment.
Slewing angular contact thrust ball bearing and plain bearings, rolling elements and has a band rolling ring raceway. However, it is compared with ordinary rolling bearing, there are many differences, and they are the following:
Slewing ring sizes are large, its diameter is usually 0.4 to 10 meters, some as high as 40 meters.
Slewing rings are generally required to bear the load of several aspects, not only to withstand the axial force, radial force, but also to withstand large overturning moment. Therefore, often acts as a slewing ring sets ordinary rolling bearings.
Slewing ring operating speed is very low, usually in the 10 rev / min or less. Moreover, in most cases, slewing ring without continuous rotation, but only within a certain angle and from the rotation, the equivalent of the so-called "swing bearing."
In the manufacturing process, materials and heat treatment, etc., slewing ring and rolling sealed angular contact ball bearing are very different.
Typically, the seal ring gear rotational drive and dustproof with a slewing ring on.