its now a few days before launch, perhaps festool would officially anwser the following(no web page
offically in usa?)
is this festool's view on difference between BHC and PDC?
and how is the PDC different from the BHC internally?
or are both the PDC and BHC really a "hammer drill" internally and the difference
is the bpm or top rpm produced?
BHC is a pneumatic rotary hammer. It literally like a small jackhammer, except adds rotation to the bit.
PDC is an electric drill with a vibration coupling in it. It doesn't produce any axial force except what you create by pushing on it.
You can turn off the hammering and drill wood/metal w/ the BHC, but it's heavy and slow.
You can drill masonry w/ the PDC w/ the vibrator, but it's slow and will make your hands tingly from the vibration.
Two different applications, both with a switch to turn on/off the hammering to make it more versatile, but in the end, pick the one that suits your applications the best. Or pick both.