Hammer drill recommendation


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Old 03-18-13, 10:58 PM
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Hammer drill recommendation

I am looking for an inexpensive hammer drill that is powerful enough to drill a ˝ hole into cement sidewalk. I’m not sure what I should be looking at the AMPS or RPM's. Any info would be helpful. Thanks…
 
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Old 03-19-13, 12:13 AM
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I use a hammer drill on a continuing basis. I have Bosch corded and Milwaukee cordless. Both are relatively expensive but use dictates quality.

If you are only going to use it occasionally and for light duty jobs..... look at drills from Harbor Freight.

Hammer drills
 
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Old 03-19-13, 01:13 AM
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My main concern is that I purchase one that can handle drilling holes 1/2 inch in diameter into concrete sidewalk. How many BPM/RPM should it have? I only want a corded one.
 
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Old 03-19-13, 06:23 AM
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I drilled a 5/8" hole into my basement floor with a regular drill. Sure, it took some time, but any hammer drill you get is going to be a drastic improvement. I have since picked up a Hitachi hammer drill from one of the big box. It was probably $60-$70. It works great for around the house stuff, and I think any of the small hammer drills will do you just fine for your project.
 
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Old 03-19-13, 06:30 AM
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Amps = power. I wouldn't worry about RPM/BPM, any decent drill will be variable speed. You don't want to drill a 1/2" hole at full speed, you will burn up the bit and the drill. Stay away from the cheap chrome plated masonry bits, the blued finish bits are much better.
 
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Old 03-19-13, 06:35 AM
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I picked up a 1/2" hammer drill at Menards several years ago for $20. I use it only for concrete, works just fine. I'm sure it wouldn't hold up to daily use but I bet I'll have it the rest of my life.
 
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Old 03-19-13, 02:12 PM
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I've drilled four holes into concrete with a battery-powered non-hammer drill. It was slow going, and a couple of times I had to take a center punch chisel and a hammer to bust up rocks that were not yielding, but it did work. That same drill is fine on cement block, as they're brittle enough that they yield without the hammering. I've probably drilled 30 or 40 holes for fasteners and such without problems.

We have a Milwaukee corded at work, it's nice but quite loud. I've drilled through poured concrete walls with it. Contractors that come in often carry DeWalt cordless tools, but they're doing telecom rack work and I think that a 4V cordless screwdriver would do the duty they demand of their drills...
 
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Old 03-19-13, 02:58 PM
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I should have mentioned that I need to drill a 1/2 " hole all the way through the concrete sidewalk which is about 6-8' thick.
Thanks for the info. I'll let you know what I get and let you know...
 
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Old 03-19-13, 05:11 PM
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i have a Rigid corded that I used to dril 4" deep into concrete to set rebar. I drilled 5/8" holes with it but I used graduated bits. I think I started off with 1/4" I think it cost around $100 at big orange 4-5 years ago.
 
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Old 03-20-13, 01:03 AM
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for occasional use look at harbor freight, they make a monster SDS hammer drill for a reasonable price. has worked great for my occasional use
 
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Old 04-02-13, 06:14 AM
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Cordless Milwaukee or Bosch would be a safe bet .
 
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Old 04-02-13, 05:32 PM
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thanks for all your input. i wound up borrowing one. asked around and a friend of a friend lent me one for the day.
 
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Old 04-03-13, 08:52 AM
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Nice - that's the cheapest way to get one
 
 

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