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Rotary Drill

 
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Old 06-10-2015, 07:14 PM   #1
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Rotary Drill


I'm Looking for a rotary drill, more for the hammer mode. Milwaukee has one for about $300 that has 3.5 lbs of force. Does anyone have any experience to what that would do? It's basically for chipping out a step, or replacing a fence post. Do I need to take the next step up?
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Old 06-10-2015, 10:26 PM   #2
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Re: Rotary Drill


I would say it depends on how often you are going to use it. I recently bought a bosch that has 6.1 pounds of energy, http://www.amazon.com/Bosch-RH540M-1.../dp/B00HUCUJG6. I used it on a tile tear out job and it worked good. Have used it a dozen or so times in the last couple months and it has been great. I have an older smaller milwaukee sds plus that I use most of the time for drilling and small chisels that is nice. But for brute force the bosch is really nice.

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Old 06-10-2015, 10:31 PM   #3
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Re: Rotary Drill


I think that's going to be a bit light. I have a 1-1/8" Milwaukee SDS, and though it's a good unit for stripping tile and drilling holes, chipping out steps or footings would put the hurt to it.
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Old 06-10-2015, 11:53 PM   #4
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Re: Rotary Drill


i have Milwaukee 5352 .says it 4100 blows per min .anyhow it will not do much in the line of chipping concrete . actually really slows down drilling over 7/8" bit which they call it's max size .i would like a bigger one .
JLC nov 2005 has a review on combination hammer drills .they reviewed 6 machines .guess who was the slowest --- Bosch 11241evs . I was surprised ,real surprised of just how much slower .hitachi mod dh40mr was the fastest in this review.
they call these 1 9/16 inch models . i would like to be able to use a few before i bought one .Any how the review claims these are are good for chipping .
Do a google search or something .someone did an excellent review a year or so ago . dewalt was the best one of that one as i recall .
but you will have to get a bigger machine then you were talking most likely
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Old 06-11-2015, 05:33 PM   #5
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Re: Rotary Drill


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Originally Posted by JFM constr View Post
i have Milwaukee 5352 .says it 4100 blows per min .anyhow it will not do much in the line of chipping concrete . actually really slows down drilling over 7/8" bit which they call it's max size .i would like a bigger one .
JLC nov 2005 has a review on combination hammer drills .they reviewed 6 machines .guess who was the slowest --- Bosch 11241evs . I was surprised ,real surprised of just how much slower .hitachi mod dh40mr was the fastest in this review.
they call these 1 9/16 inch models . i would like to be able to use a few before i bought one .Any how the review claims these are are good for chipping .
Do a google search or something .someone did an excellent review a year or so ago . dewalt was the best one of that one as i recall .
but you will have to get a bigger machine then you were talking most likely
Interesting. The article I saw from JLC put this hammer above the Makita and Milwaukee for power/speed. It also tied for second overall.



I have this hammer and it is certainly not slow by any means.

That said, it is not for concrete demo. You will want a larger hammer for that.
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Old 06-11-2015, 06:07 PM   #6
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Re: Rotary Drill


If you're not gonna use it alot just look into used hilti sds max on ebay.get more for your money
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Old 06-11-2015, 06:58 PM   #7
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Re: Rotary Drill


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Originally Posted by bcradio View Post
Interesting. The article I saw from JLC put this hammer above the Makita and Milwaukee for power/speed. It also tied for second overall.



I have this hammer and it is certainly not slow by any means.

That said, it is not for concrete demo. You will want a larger hammer for that.
do you know the article .i have stacks of the magizines .would like to read it .get more info . the tool reviews certainly have flaws . you need to experience the tool in person sometimes .
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Old 06-11-2015, 07:02 PM   #8
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Re: Rotary Drill


With a rotary hammer, the bigger the better. I just took my Bosch in because the hammer mechanism is not functioning. Wish I had bought a bigger drill. It's good for concrete, but granite slows it way down. I can't remember the model number, but it is one of the smaller with sds max.
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Old 06-11-2015, 07:12 PM   #9
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Re: Rotary Drill


i agree with last statement about bigger being better .i have a hammerdrill for small stuff .if i am doing 1/2" and bigger bits I want to get down and do it! . the rotary hammer i have says it is good up to 7/8" bit ,they are not kidding . i would like to be able to have the ability to run a spade bit for digging in something smaller then my demo hammer . sounds like a bigger combo machine not only drills well but they can do chipping and digging .
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Old 06-11-2015, 07:13 PM   #10
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Re: Rotary Drill


I have several hammers.
I use the Bosch bulldogs daily.
I use a 2" Makita combo hammer
http://www.amazon.com/Makita-HR5210C...+rotary+hammer
and a couple Milwaukee demo hammers
http://www.amazon.com/Milwaukee-5446...ee+demo+hammer

if you are looking at a tool for the hammer mode look at a demo hammer they pack much more punch per $.
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Old 06-11-2015, 08:59 PM   #11
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Re: Rotary Drill


The more current drawn, the more power delivered to the bit but there may be more to it
https://books.google.com/books?id=6d...low%22&f=false

I guess you could rent one and scale up or down based on the draw and performance of the one you rented.

Last edited by GettingBy; 06-11-2015 at 09:09 PM.
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Old 06-11-2015, 09:53 PM   #12
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Re: Rotary Drill


Quote:
Originally Posted by charimon View Post
I have several hammers.
I use the Bosch bulldogs daily.
I use a 2" Makita combo hammer
http://www.amazon.com/Makita-HR5210C...+rotary+hammer
and a couple Milwaukee demo hammers
http://www.amazon.com/Milwaukee-5446...ee+demo+hammer

if you are looking at a tool for the hammer mode look at a demo hammer they pack much more punch per $.
The makita combo hammer and the milwaukee demo hammer you linked to both are rotary hammers right? From what I read on the link to the milwaukee it drills also. So what makes it a "demo" hammer? When I think demo hammer I think mini jack hammer type tool that doesn't rotate at all.
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Old 06-12-2015, 12:06 AM   #13
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Re: Rotary Drill


The Makita is a combohammer
the Milwaukee is a demo hammer. No rotation only hammering.
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Old 06-12-2015, 09:26 AM   #14
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Re: Rotary Drill


Quote:
Originally Posted by charimon View Post
The Makita is a combohammer
the Milwaukee is a demo hammer. No rotation only hammering.
I thought it was hammer only but someone on the amazon link said it drills also. Guess they got confused.

Is there any advantage or disadvantage to that style demo hammer vs one like a mini jack hammer like this, http://www.amazon.com/DEWALT-D25899K...ds=demo+hammer, since they both only hammer? I have a few smaller hammer drills, a milwaukee sds plus roto hammer, and a bosch sds max roto hammer so I think if I got another it would be a demo hammer and just wondering.
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Old 06-12-2015, 12:37 PM   #15
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Re: Rotary Drill


The performance might depend more on the material being hammered than on the drill.
You can test this idea with your existing drills and several different materials.

And see what the 240v models offer
http://www.screwfix.com/p/dewalt-d25...ill-240v/92018

BTW, 1.8 joules = 1.3 ft-lbs.

Some countries outside the US allow less BS in their ads.

Last edited by GettingBy; 06-12-2015 at 12:44 PM.
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Old 06-12-2015, 12:42 PM   #16
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Re: Rotary Drill


Bigger is better IMO. I'm not sure which Bosch Rotary Hammer I have, tried several and got the largest one I could readily hold up in the air. Maybe it's an older version of this...http://www.amazon.com/Bosch-11264EVS...dp_ob_title_hi .

I bought it for drilling holes in rubble stone foundations but use it more for chipping concrete, ice and digging hard pan or frozen ground. Easy peasy, makes me smile when I use it. One of these days I'll get a tamping bit.
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Old 06-12-2015, 02:38 PM   #17
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Re: Rotary Drill


Quote:
Originally Posted by Sisyphus View Post
got the largest one I could readily hold up in the air.
Good point:
"Power to Weight ratio - 13-Amp, 8.1-Feet lbs Impact Energy and 14.3-Pound -"
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Old 06-15-2015, 06:35 PM   #18
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Re: Rotary Drill


lube the drive. Chipping out an old step should not be an issue, nor is an old fence post. A lot depends on your bit. Shorter bits deliver more energy. Also don't get a spade bit for something that can use a chisel
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Old 06-18-2015, 08:54 AM   #19
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Re: Rotary Drill


Quote:
Originally Posted by JFM constr View Post
do you know the article .i have stacks of the magizines .would like to read it .get more info . the tool reviews certainly have flaws . you need to experience the tool in person sometimes .
This is the one I read http://www.jlconline.com/tools-and-e...n-hammers.aspx
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Old 06-18-2015, 09:34 AM   #20
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Re: Rotary Drill


good to see the bosch doing better in that article . I think what I have learned from these reviews .You cannot go by brand . Then again never trust a review totally either .
good to see hilti got first place being bet it cost alot more .
good article .thanks for posting

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