Hi
I haven't looked at the file yet, but:
-the displacements seems legit since it hasn't a weird collision with itself.
-the stress is below 50 MPa which is equal to 50 N/mm^2
-> if you have a normal steel this is sufficient. You can check witch the manufacturer, but depending on the steel it will usually only deform once you exceed 235-355 N/mm^2. With steel used for bearings it's usually even higher. The manufacturer should provide you with the maximum allowed force anyways, because you don't know the internal build of the roller bearing.
If you come across another part consider following:
max 250 MPa
load 50 MPa
=> Safety factor of about 5.
How far off are your calculations done by a hand?