Many thanks evelrod and swall. Spindle is the UK term - I believe it's known as an axle in the US. It's the solid rod on which the inner races of the bearings are mounted. And I don't know what the original material was as I don't have an original....
Evelrod - why not SS? And have already...
I am restoring a late 1940s Norton motorcycle and need to manufacture wheel spindles for it. Would stainless steel be an appropriate material and if so what grade would anyone recommend? The spindles are around 14mm diameter and I guess the loading is principally in shear rather than bending...