Message text written by INTERNET:firstname.lastname@example.org
>I ended up buying a properly hardened shaft from Quantum Mechanics
>with whom I've dealt with before (and highly recommend).
>For future refrence, Rimmer's faxed me their specs for the shaft. I
>quote, without fully understanding:
> material ... BS.970:part3:212A42
> heat treat ... case harden 60-62 HRC, depth .75mm (pre-grinding)
> finish grind ... 4-6u c.l.a (that's 'u' for 'micro')
> tolerance (dia) ... 85 somethings
> max runout OAL ... .0015in
>If anyone can identify the US equivalent of that BS number, I'd
The trashed shaft I got out of the transmission was pretty darned hard. It
file scratch test. I will test the new shaft (from TRF) on the safe end.
Since the original shafts did not hold up all that well, I think it would be
exceed the original specifications. Probably better depth of hardening and
metal to start with.