Tools, Sharpening and Power Machinery - Hammer Drill

Does anyone has ideal if this hammer drill will work for concrete slab?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2368353688&category=20776
Thanks

Looks like it will do the job. Looks like a no name brand. the good thing is sds style bits they are awsome

Thanks,
Tried a Hilti hammer drill ($300) at Home Depot, worked great. Brought a $50 110V/6AMP Black & Decker hammer drill, did not drill beyond 1", wore out drill bit. It seems hammer drills eigher work or not at all.

How often are you going to use it? If it's just a 1 time project you would be better off renting 1. If you plan on using it often spend the extra money and get a brand that will last. If taken care of properly a good quality rotor hammer will last forever those flea market tools don't last notime.

Thats not really a hammer drill It's a rotary hammer drill. Notice the splined bits? You would be much better off getting a hammer drill. The bits are cheaper, and it can be used as a regular drill as well.
I wouldn't waste my money on that, even if the rotary unit is any good. I would be willing to bet those bits are complete junk.

Thanks for all your inputs.
Weebee, do you mean a good hammer drill should have a hammer only mode? Are there any web sites talking about differences between hammer drills?

So many drills at Hilti web site
http://www.us.hilti.com/holus/modules/prcat/prca_navigation.jsp?OID=-11997
which one is the right one to drill very hard concrete slab?

the TE25 is very good and light weight. im not sure about the TE15 ive never used one. but the te25 will shoot 1/2 holes in no time!!! When you get up to 1-1/4" it might be a good idea to get something bigger although its not nessecary. A drill is as good the bit you buy. Dont be frugal when it comes to bits.

Originally posted by yahoo2003
Thanks for all your inputs.
Weebee, do you mean a good hammer drill should have a hammer only mode? Are there any web sites talking about differences between hammer drills?
No, a good hammer drill has a hammer and regular drill setting (I believe most if not all hammer drills do) A rotary hammer is for only one purpose, boring holes in cement. I have two hammer drills, a black and decker pro hammer drill. A real good home DYer unit. Cost under 100.00 I have a Milwaukee hammer drill for work. Real nice heavy duty drill. cost 250.00

Got my 1" 620W hammer drill today ($25 from Ebay). Looks very heavy duty, comes with 3 drill bits and two chisels. No instruction booklet. Can anyone tell me how to mount and dismount SDS drill bits? Any precautions to use hammer drill? Thanks

yahoo2003:

If what you purchased is like the one on ebay you would pull back the black collar at the front of the drill and insert the bit, then release the collar and rotate the bit untill it engages the slot.

As far as precautions you would need to wear safety glasses and make sure you check what you are drilling for possible embeded objects like conduit, pipes and rebar.
It's hard to sometimes predict obstructions but with experience you will sometimes be able to feel them as your drilling.
Rebar is the most common thing to hit and a carbide bit will not drill through it.
You will feel rebar if the drill goes to a certain depth and then stops advancing for no apparant reason. Vacuum the hole and look for something shiny.

It looks like it should work well for homeowner use.
What size and depth holes are you planning to drill?

Thanks,
GregH. I mounted drill bit according your instruction. I need to drill my foundation wall for deck ledger board and need inspector tell me where to drill (bricks or mortar join). I also want to drill concrete stoop for vinyl handrails. Hole size will be 1/2" to 1" for thru bolts, concrete anchors or expoxy. It is very good point about rebar in concrete.

yahoo2003:

I have always drilled the dead center of a brick as mortar can be quite brittle.
When drilling brick use light pressure on the bit as bricks tend to crack easily.
Pre-drilling with a 1/4" or 3/16 bit also helps prevent cracking.

If drilling a cement block try to hit the center where the web is.

Good ideas, GregH.
I will buy few hammer drill bits and practice some drillings on concrete and bricks. I was impressed by the SDS chuck, very easy to use and secure.
I got another question: The drill bits came with hammer drill have two long and two short slots, are they SDS or SDS+? Are SDS and SDS+ bits and drill interchangable?
Thanks

Originally posted by yahoo2003
Got my 1" 620W hammer drill today ($25 from Ebay). Looks very heavy duty, comes with 3 drill bits and two chisels. No instruction booklet. Can anyone tell me how to mount and dismount SDS drill bits? Any precautions to use hammer drill? Thanks

You dont even have to pull the collar back to install on some models.

I guess for 25 bucks, you cant really go wrong. But a 3/4" dewalt sds bit costs at least that. So I wouldn't count on that thing lasting.

Tried everything until pull back collar according to GregH. This drill is for DIYers. Delivered to door step, better than rent (two one hour trips plus $30 rent). I won't drill more than 100 holes around my house. Came with keyed chuck adaptor and can be used as high power drill.
Is it true SDS+ drill bit can be use with SDS drill but not vice versa?