LEONESSA slewing ring bearing replacement

In order to choose a slewing ring the following information are required:

 • application description

 • working loads on the slewing ring 

 • operating cycle 

 • slewing torque

 • overall envelope

 The first cut design of a slewing ring can be done by comparing the applied loads with the load capacity of the raceways. The load capacity of a slewing ring is reported in a load chart and it is calculated by taking into consideration:

• slewing ring geometry  

• rings material  

• heat treatment parameters of the raceways 

• dimensions, material, heat treatment and number of rolling elements 

 • contact parameters

The load chart is represented in a Cartesian diagram reporting the compression axial force [kN] on the x-axis and the tilting moment [kNm] applied to the slewing ring on the y-axis. The point representing the maximum load, multiplied by the coefficients of application, has to fall below the application limit curve

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