I've just got myself one of those Bosch PBD40s, to replace a really old bench pillar drill branded Clarke. So old it had an on off switch, no NVR and no stop button.
So here are my thoughts after a week or so.
First, Bosch don't publish key data on throat and max chuck to bed, I went through numerous user reviews and found throat 120, I reckon its a bit more but 120 is safe, max chuck to bed 280. So its bigger than it looks in the pictures, stroke is an impressive 90mm.
Bed is bigger than most diy pillar drills, 330x350 they say, so it takes up a bit more bench space. Having said that it has no overhang to the rear or side so overall takes up a bit less space. I've mounted mine on a 3 sided 2x2 sub frame so you can get a hand under to remove shavings and dropped drill bits. It doesn't really need fixing down so a plus for those short of space is that its light enough to move easily and put on the floor beside the bench when not needed. Its all sturdy alloy so I don't expect any rust prpblems in my cold workshop/garage.
Some things are excellent, the electronic continuously variable speed, the way the whole body can easily be moved up and down to suit various jobs, the electronic depth indicator (you press to set zero when the bit touches the job, then it tells you how far you have gone) and a depth stop for repeat work, the light, the laser cross hairs. All so much easier and quicker than my former bench pillar. The clamp, once you get used to it, is really quick and means I will never think "might just hand hold this", but you can swing it away if you don't want to use it. Fence is useful, and drilling round stock should be fine because the transverse 'groove' is a decently deep V and the clamp will work well.
Chuck - gets a not-sure yet rating from me. Quick release but you need to think carefully and it almost feels like you need 3 hands to fit small bits. I'm sure I will get used to it.
It doesn't have a tiltable base or table. That's a minus if you do lots of angled drilling but a big plus if you don't. Its always at 90 degrees, in the past I've spent ages making sure my tiltable table is 'just so'. It should be easy to make 30 or 45 degree jigs to sit on the base but I've not played yet. Another plus is that the chuck is always over the hole and the transverse slot, unlike a conventional tabel which can swing about.
BUT, there is one big but - side to side movement in the non-adjustable spindle bearings. Its definitely in there not in the chuck. If you search for spindle play in PBD40 it's 'a thing' - not just my example. Using a brad point bit is fine, and I'm sure a twist drill will be fine in well punched metal. A conventional twist bit in hardwood can move about a bit when you start and be thrown off a bit by grain. My brief experience makes me think that high speed + slow feed to start with helps a lot, and brad point gives no issues. If you are after absolute precision this might not be for you, but its much better than the clanky old thing I had before so I will stick with it - probably. 30 days to decide.
So overall I really like the design and useability. Slight worry about absolute accuracy.
(Does anyone know a source of reasonably priced brad point bits in 0.5mm sizes, approx 4 to 10mm? MIne are deWalt 4-5-6-8-10 so not even a 7 and 9. I can find lots of sets at £70 but that/s OTT for my needs)