I just changed the chuck on my PBD40. It’s the same brand (Röhm) but a higher spec’ed version. I doesn’t have the annoying lock ring, just a twist lock mechanism. I got it after watching this
YouTube video on changing it. The new chuck has 1/3 the amount of run out as the original, which is only supposed to be fitted to hand drills. Not pedestal drills. I waited a few months to
buy it on Amazon till the price dropped from its usual ~$170 down to $118. It’s probably more applicable to metal workers but I couldn’t help myself.
The wobble in the spindle that Chris Parks mentioned is still there but Its never caused a problem with what I’m working on.
Lyndon