Hi Kingnero,
Yes the failure is in the radius step. Originally it did not have a radius. We added the largest radius possible in that area (that the bearing would allow). Still needs to be stronger.
I think we are leaning more towards 4130.
We are leaning towards 4130 or 8620.
The failure point is where the inner bearing seats. See diagram below. The shaft snaps completely at this point.
Note: when used as directed, the shaft works great. It is when the product is used incorrectly (ie: extreme offset wheel used off road) where...
Is there a steel alloy that is stronger than 1018 and can be welded to A36 plate?
By stronger, I mean a higher tensile strength.
The material needs to be machined before welding.
The application is a shaft that a hub assembly with bearings bolts on to (similar to a weld-on trailer axle stub...
