Sound like this, rotary hammer, is what I am looking for. What you are looking for when searching on the right rotary hammer? Amp, RPM, ft-lb?
Thanks.
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Originally Posted by Jrboulder
What you're looking at is called a "Rotary Hammer", not a "Jack Hammer"
A rotary hammer is pretty much an electric jackhammer that spins its bit so you can make a round hole. Most AC models above 3/4" will have a straight hammering mode in addition to the requisite drill mode (hammer/spin) that is extremely useful for chiseling.
Most modern Rotary hammers use an SDS shank bit. There are 2 sizes: SDS-Plus (smaller) and SDS-Max (larger). Some older tools use splined shanks and other weird stuff but bit availability is pretty limited.
Rotary hammers can drill into concrete with significantly more speed and precision with significantly less effort than a hammer drill because they have an actual impacting force rather than just spinning the bit really fast and inducing a chatter. Yes, I also have a hammer drill and it's garbage compared to a rotary hammer.
Hilti is pretty much the Snap On of rotary hammers although their offerings below $500 probably wouldn't have the capacity you want and their more expensive stuff is aimed as commercial users with on-site support and other stuff that a home gamer wouldn't really be able to take advantage of.
I have the Bosch 11255VSR that you posted the link to and so far it has been superb. I use it more for chiseling than drilling but that's just the nature of my projects. I think if you wanted to do more heavy chiseling you would at a minimum want to get an SDS-Max or a dedicated "demolition hammer" that doesn't have the capacity to drill a hole but has more chiseling impact energy.
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