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Layout and characteristics of slewing bearings

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The slewing bearing is a large and extra large bearing that can accept the induction load and special layout; the demand has the characteristics of compact layout, sensitive reversal, convenient equipment protection, etc. Compared with the common bearing; the slewing bearing has the following obvious features:
1. The outer diameter is usually 0. 4m ~ 10m; the maximum can reach 40m.
2. High load carrying capacity can usually be accepted together with axial load, radial load and overturning moment load.
3. Low speed operation speed is lower than 10r/min; and most of the cases do not do reverse reversal; only change within a certain viewpoint; do rocking motion.
4. The hole with the bearing device can be fastened to the upper and lower supports with screws.
5. There is no rotating drive gear on the inner or outer ring of the central shaft.
6. With smooth oil holes and sealing equipment.
The primary layout of the slewing bearing is different: four-point touch ball slewing bearing, double-row angular touch thrust ball slewing bearing, interspersed cylindrical roller slewing bearing, interspersed tapered roller slewing bearing, three-row cylindrical roller combination slewing bearing.
According to whether the tooth can be scattered and the gear is scattered, it is divided into: non-toothed, external or internal gear.
In the meantime, the four-point touch ball slewing bearing has high static bearing capacity; the inserted cylindrical roller slewing bearing has high dynamic bearing capacity; the inserted tapered roller slewing bearing can improve the supporting rigidity and reverse precision by applying preload; The cylindrical roller combination slewing bearing increases the bearing height to improve the bearing capacity; the load is different from the raceway; therefore, under the same force condition, the bearing diameter can be greatly reduced. Responsibility, arrogance, 啬芰 淖 淖 淖.
Slewing bearings are widely used in large-scale reversing equipment such as lifting and transporting machinery, mining machinery, construction machinery, port machinery, ship machinery and high-precision radar.

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