Equivalent dynamic bearing load

When double row cylindrical roller bearings are used as non-locating bearings

Start calculation
If cylindrical roller bearings of the NNUP design with flanges on both inner and outer rings are used to locate a shaft in one or both directions, the equivalent dynamic bearing load should be calculated using

Start calculation
when Fa/Fr ≤ 0,1

Start calculation
when Fa/Fr > 0,1
Since axially loaded cylindrical roller bearings will only operate satisfactorily when they are subjected to a simultaneously acting radial load, the ratio Fa/Fr should never exceed 0,25.
SKF logo