power drills

by **mungo** » Wed Nov 19, 2008 2:14 pm

:? can some one tell me the difference between an impact drill and a hammer drill as I need one to drill my outside wall.
cheers mungo :oops:

by **ericmark** » Wed Nov 19, 2008 4:29 pm

A hammer drill often has a chuck and as a result the amount of hammer is limited so as not to damage the chuck. With SDS drills you have no chuck so they can use a lot higher hammer action and some also have a rotor stop so you can fit a chisel and mine quite easy cut through an old fence post including the steel reinforcing bars. Some have reverse very handy when drill gets stuck.
I have not seen term impact drill but I will guess that's what you are talking about.
A band jack with a huge compressor is still an impact drill the term drill does not mean it has to turn look at a seed drill it just has to penetrate something.
Does this help.
Eric

by **mungo** » Thu Nov 20, 2008 1:36 pm

:D Yes, cheers eric, I now know the diff' and which one to buy.
mungo