Slewing ring is a large bearing that can accept generalized loads, and can accept axial and radial loads and overturning moments. It is composed of inner and outer rings, rolling bodies, etc., which can make the host design compact, easy to guide, and simple to maintain. Slewing ring bearings are available in gearless, external gear and internal gear. Including four series of four-point touch ball bearings, double-row angular touch ball bearings, interspersed cylindrical (tapered) roller bearings and three-row cylindrical roller bearings. Among them, the four-point touch ball bearing has a higher static load capacity, and the interspersed cylindrical roller bearing has a higher dynamic load capacity. The pre-interference energy of the interspersed tapered roller bearing enables the bearing to have greater support rigidity and rotation accuracy. Because the bearing capacity of the cylindrical roller combined bearing is increased to the height of the bearing, various forces are received by different raceways, so under the same force, the diameter of the bearing can be greatly reduced, so the main engine is more compact. Slewing bearing with high load capacity. Slewing bearings are widely used in large-scale slewing devices of cranes, mining machinery, construction machinery, port machinery, marine machinery, and high-precision radar machinery and missile launchers. At the same time, it can also design, develop and produce various special structure slewing bearings according to the specific requirements of users.
1. Point-touch rolling operation mode
The point-touch rolling operation method is mainly used for four-point touch ball slewing bearings and interspersed roller slewing bearings. This kind of operating principle requires higher quality of steel balls for the point-touch radial and axial force combination, and the track should be evenly viewed.
2. Surface touch rolling combined operation mode
The combined operation method of surface touch and rolling is mainly used for three-row roller slewing bearings. Its advantage is that the touch surface is large, and the bearing force is even and flexible.
3. Surface touch rolling and sliding operation mode
The surface-touch rolling-slip combined operation method is mainly used for turntable bearings. Now the new slewing bearing has a compact structure and high precision. Therefore, the surface-touch rolling-slip combined operation method is more suitable.
4. Rolling and sliding combination rolling operation mode
The rolling-slip combined rolling operation method is mainly used for the ball-column slewing bearing. This principle has a long life and has the advantages of the roller and ball two-layer structure.