Bearing Displacements due to Stiffness
Consider a shaft with two bearing fixtures applied on cylindrical faces with stiffness: K
R(radial) and K
A (axial). Two loads are applied: F
v (vertical), and F
a (axial) as shown.

The average Y -displacement of the bearings is: dy = Fv / (2 KR)
The average Z- displacement of the bearings is: dz = Fa / (2 Ka)
NOTE: If you define bearing connectors by modeling the housing faces, the above equations represent average relative displacements of the shaft with respect to the housing.