Slewing ring

Slewing ring wide range of applications, mainly used for lifting machinery (truck cranes, offshore crane bearing, etc.), construction machinery (excavators, loaders, etc.), transport machinery, materials processing machinery, metallurgical machinery, food processing machinery, and military equipment (tanks, anti-aircraft artillery, radar, rocket launchers, etc.), medical equipment, scientific equipment. Slewing bearings and plain bearings, like all the rolling elements and rolling ring with raceways. However, it is compared with the ordinary rolling bearing, there are many differences, and they are the following:
1. slewing ring size is large, its diameter is typically 0.4 to 10 meters, some as high as 40 meters.
2. slewing bearings are generally required to bear the load of several aspects, not only to withstand axial and radial load, but also bear a large tipping torque. Therefore, often acts as a rotary bearing sets ordinary rolling bearings.
3. slewing ring operating speed is very low, usually in the 10 r / 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."
4. In the manufacturing process, materials and heat treatment, etc., slewing ring and rolling bearings are very different.
5. Generally, the sealing device with slewing ring on the ring gear rotational drive and dust with.
6. slewing ring size is large, so unlike ordinary bearing sleeve and mandrel mounted on the bearing housing, instead of using screws to fasten the upper and lower bearings.