I agree with
JohnDThompson
Being unfamiliar with this ratcheting mechanism or the e-motor this ratcheting mechanism is mounted to the output of...What are the odds that the ratchet drive ring will simply unscrew when reverse forces are applied?
It's gotta be a hardened steel of some sort. They can't possibly machine it in and harden locally, can they? The production process cost would be prohibitive. The ratchet ring has got to be a seperate piece and threaded in.
Tack welding in the drive ring would have to be a requirement contingent upon both being compatible weldable metals.
Failing that, why not machine a solid bushing and press it in to the output gear with a keyway and pin to dummy out the whole ratchet altogether?