Rorschach wrote:The 2kg relates to the Impact weight, not the weight of the drill itself.
Impact strength is always stated in Joules (legal requirement?) - the weight class, at least for Makita, Bosch and Metabo drills actually does refer to the weight of the drill, although "2kg class" actually means 2.0 to 2.99kg and so on. So a Bosch Pro GBH2-24D weighs a healthy 2.85kg (according to Bosch's technical manual) and can drills iup to 24mm in diameter whereas the Bosch Pro GBH3-28DRE weighs in at 3.6kg and can drive a 28mm cutter
Weight of an SDS drill becomes significant depending on how you use it. Used at floor level or up tpo about waist height most people can handle a 5 or 6 kg drill - going up to above shoulder height and an 8kg drill becomes a real PIA (and tiring) to handle and even 4 or 5kg drills can quickly become tiring to use
BillyGoat wrote:Just to add to my comment above, I actually used it to core two 50mm holes this weekend and it managed it without any problems at all. It's even got a clutch that works VERY well. Wouldn't want to do it all the time though. The bricks were from the 1930's and VERY weathered.
Where they have clutches, SDS drills are generally rated for core drilling up to about 50 or 60mm. Above that, though, you are into unknown territory - maybe you'll be lucky, maybe not...