It has high RPM, but only 4" buffs, so the surface speed is
probably comparable to a larger lathe.
I bought one because I wanted to be able to use the 3M FX wheels,
which are not supposed to he used at high RPMs. Then 3M discontinued
the wheels, so when mine are used up, too bad.
Anyway, it appears to me to work fine across its speed range, but I
guess I don’t press hard on it, as I have not noticed any stalling.