Rotor Hammer Bit?

[karoc]

Rotor Hammer Bit: I have about 60 1/2 holes to drill in my slab for wedge type anchors 5 1/2 long. For me that seems like lot of holes to drill so I would like to try find a good bit, but not Nasa grade to drill all these holes without issues. The location of the holes I don't think I will be hitting rebar cause I believe down deeper than 6" and the rebar is to sides of the beam. This is rotor hammer I will be using, nothing fancy just hope it gets the job done. I'm getting the wedge type anchors from McMaster-Carr which are about 60.00 for 25 count. Seems like lot of money but I know the quality is good. Looking for bit suggestions, and maybe link to that bit or where to buy that bit. McMaster also has them but wanted to check with GJ first.

 

[larry4406]

I have been pleased with the Bosch bits. Got mine from the orange box store.

 

[Dave455]

I was just about to suggest the Bosch bits too. I don’t think the make is particularly critical, as with these bits you only need the tips to be really decent, and I think most are, though there is probably some junk out there if you search!

I’d buy one bit, and probably a spare, and I suspect you will be fine. I tend to use the Bosch as they are relatively inexpensive and readily available locally.

 

[finn]

I was just about to suggest the Bosch bits too. I don’t think the make is particularly critical, as with these bits you only need the tips to be really decent, and I think most are, though there is probably some junk out there if you search!

I’d buy one bit, and probably a spare, and I suspect you will be fine. I tend to use the Bosch as they are relatively inexpensive and readily available locally.

I never start a project like that without at least one spare bit.

They’re a consumable, and it’s pretty frustrating when something goes south and I have to run to town for another bit. Cost is relatively inconsequential to the total project cost, especially considering what the cost of hiring it out would be.

 

[tyyost]

I’d definitely buy two for 60 holes. I burned up two recently on a job anchoring pallet rack - went through 50 anchors, so 50 or so holes like yours. I bought Milwaukee bits from the orange box and was happy with them, but the one was trash after and the other may have a few holes left, but I only kept it as a backup.

Last week I walked out a the blue box last week empty handed after looking at 5/16” SDS bits from Bosch. None of the ones on the rack had clearly defined points on the carbide, something I have come to find handy on a drill bit.

I have bought bits from McMaster before and they were US made and were very good. If rebar is in the mix I wouldn’t spend a ton per bit as the chance of the bit getting trashed is high.

 

[KnurledNut]

HILTI. Worth the extra cost.

 

[Walkers]

The Bosch bits seem fine. The Hilti bits are a little better , but are not available everywhere. The bits will hammer through rebar as well. Spend the extra 20 bucks and get a second big. with that many holes you are likely to overheat it and melt the brazing on the carbide if you are going hole to hole. A can of water to cool the bit between holes will help with its longevity.

 

[txvwnut]

Bosch buy a couple. If your setup to just go non-stop drilling do about half the holes then swap bits to let the other one cool down.

 

[Bockscar]

The Bosch bits at Lowes are like 9 dollars....get a few ...do your job .....be happy.....on to the next project

 

[dutchgray]

Any known brand bit will be fine, get a couple.

 

[sparky 1971]

I have the same rotary hammer but I haven't used it since I bought the big Milwaukee cordless four years ago. It will work fine with any name brand bit. I use Bosch bits but that's just because those are the easiest to get. I've also used Milwaukee and DeWalt bits and have no complaints.

 

[readhead]

If you are not absolutely sure about rebar placement I would also have a rebar eater handy. We drilled in concrete almost every day while erecting steel and would encounter rebar often. Having a rebar eater saved money on bits, which I bought by the case.

 

[Samuel Load]

Maybe you can finish this project with a Mansonry Drill Bit Hex Shank instead of Rotary Hammer Bit，saving some money

 

[dogdog]

Bosche or dewalt or hitachi or Hilti Milwaukee bits are all good. HF bits *****, some eBay bits ship out of Canada *****. They used sub par carbide.

 

[tyyost]

Another spot where looking at COO can help, good big box SDS bits often come in many flavors, DeWalt, Bosch, Milwaukee, but all the good ones are made in Germany.