Dewalt has recently come out with new hollow SDS drill bits, which feature built-in dust collection. With bits extracting dust while drilling, there’s less dust, users can work faster, and holes are ready for adhesive anchors.
These new hollow SDS drill bits connect to Dewalt’s Airlock System, which I take to mean that they attach to Dewalt dust extractors without the need for additional adapters.
The bits are said to be OSHA Table 1 compliant.
If you use these bits with another dust extractor, you might need an adapter. Also be sure that the vac is HEPA rated.
Above is a smaller diameter SDS Plus bit.
Larger diameter SDS Max hollow masonry drill bits have a different tip profile, which makes sense – larger drill bits create more dust.
Each drill bit has on-board dust extractor port, located towards the base near the tool connection point.
- 1/2″ SDS Plus Bit (DWA54012): $61
- 9/16″ SDS Plus Bit (DWA54916): $67-$72
- 5/8″ SDS Max Bit (DWA58058): $154
We first saw hollow masonry drill bits from Hilti, and Bosch also came out with their own hollow Speed Clean bits, also with built-in dust extraction connections.
There’s also the option of on-tool dust extraction, which can lead to a more portable solution, especially when talking about cordless solutions.
But compared to using an on-tool solution, using a hollow bit lightens the load by adding only a little weight to your setup. There is of course the added hassle of working with a dust extractor hose and in most cases a corded vacuum.
There are 2 advantages to hollow drill bits. First, less dust in the air means improved worker safety. That’s a big deal since silica is not something anyone should be breathing in.
Second, it cleans out holes fast. Well, they’re said to clean out holes fast. I’ve yet to demo any hollow SDS drill bits. But I can’t imagine that they don’t work as advertised. As you drill, you powderize material at the bottom of a hole. As the dust is created, it’s sucked through the drill bit tip and makes it way to the dust extractor.
The result should be a clean and clear hole. There shouldn’t be any need to vacuum or brush out the holes afterwards. Once the hole is drilled, it should be ready to receive an adhesive or mechanical anchor.
A big downside is in the price – these bits are a lot costlier than traditional SDS drill bits. But you like your lungs, right? And there are cost savings in working faster.
If you do a lot of masonry drilling, will you be buying these or other hollow SDS drill bits? What do you do now to minimize dust?