High Quality Three Row Roller External Gear Large Slewing Bearing For Port Crane

Port cranes play an important role in the development of the port. The slewing bearing device is an important component connecting the rotating part and the fixed part of the crane. Once the failure occurs, the stability of the whole crane will be affected. At the same time, the slewing bearing is loaded with complex loads, and it must withstand vertical force, horizontal force and The overturning moment, so the strength of the slewing ring is very important.

Marine crane slewing ring features: Marine crane in general use double row different ball, four-point contact ball, three row roller slewing ring of internal tooth structure, depending on the slewing ring capacity of the three row roller slewing ring are normally used for heavy crane, four-point contact ball slewing ring and double row slewing ring for light cranes.

As the crane works in the environment of -20°C -- +45°C, this kind of slewing ring requires higher mechanical performance of materials.

The three row roller slewing bearing has three seat rings,which separate the upper,lower and radial raceways,

it made each row of the roller's load capacity can be specified and can bear different loads simultaneously.

The capacity load is the largest one compare with the other three models.Due to the large size in axial and

radial dimension the solid structure, it is specially suitable for the heavy  duty machinery such as wheeled

excavator,wheeled crane, ship crane,ladle turrets and the heavy duty mobile crane etc.

Note:

1. n1 is the numbers of lubricating holes. Oil cup M10×1JB/T7940.1~JB/T7940.

2. The Oil nipple's location can be change according to the user's application.

3. n-φ can change to tapped hole, the diameter of tapped hole is M, and depth is 2M.

4. The tangential tooth force in the form is the max tooth force; the nominal tangential tooth force is 1/2 of the max one.

5. "K" is addendum reduction coefficient.

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