I am working on a project using two bronze flange bearings and a 3/4" diameter aluminum shaft of type 6061 - all mounted on a 2" X 4" rectangle steel tube. See the picture attachment.
My question: will this arrangement be acceptable using the aluminum shaft with a downward load of 50 pounds and a sideway load of 25 pounds?
The maximum continuous rotation speed will be 200 RPM.
I wish to keep this low cost as possible.