Discuss: rotary table structure and the characteristic of the bearing

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Wheel bearing is a kind of can accept comprehensive load, the structure, the large and super large special box to request has the structure is compact, and turn to sensitive, device maintenance is convenient wait for a characteristic. Compared with ordinary bearing, wheel bearing has the following distinct features:
1. The overall size
The diameter is usually 0.4 m ~ 10 m, the biggest to 40 m.
2. Carrying to high
Ordinary together can accept axial load, radial load and overturning load.
3. The low speed
Task speed below 10 r/min,bearing corp and a few conditions do not turn in succession, only in certain Angle roll inside, do swing motion.
4. With the bearing device holes
Available to tighten it in the screw, the bearings.
5. No middle pivot
Inner circle or outer ring with rotating drive with gear.
6. With smooth oil hole and sealing installationspherical roller bearing.
Wheel of the bearing important construction methods identify include four-point contact ball bearing, wheel double row angular contact thrust ball bearing, wheel with cylindrical roller bearing, wheel with tapered roller bearing, wheel three rows of cylindrical roller bearing with rotary table.
According to whether belt ChiJi gear, the distribution of the parts and divided into: no gear, gear, gear or inside the different structural.
Which four contact ball bearing wheel has higher static bearing ability, punctuated by cylindrical roller bearing wheel has high dynamic load ability, thrust tapered roller bearing can pass on the wheel load bearing rigidity and progress rotation accuracy, and three rows of cylindrical roller bearing housings with rotary table the highly increase to progress to load, load distinguish have different groove accept, so in the same stress state, the diameter of the bearing can decrease greatly, so make host more compact, is a high load to the wheel bearing.
Wheel bearing commonly used to lifting transportation machinery, mining machinery, c onstruction machinery, port machinery, equipment and high precision of the radar ship the large rotary installation.ball roller bearing