[Jacques Reed]

Hi Eric,

If it is the one pictured it goes inside the brake drum and inside the bearings and seal.

I have attached a diagram from the Ford Special Pattern Vehicle handbook. It is for the later style Rzeppa CV joints in the bottom drawing. If you expand the picture you can see it in cross section at the outer end of the front brake hub.

The chamfer goes to the outside to clear the radius of the hub base. This is because in metal turning you do not want to machine a sharp edge where there is a load load and create a stress point. This also give the outer bearing a flat base to bear upon.

Cheers,