How to drill holes in concrete using black granite or SDS masonry bits
2018/09/07

About drilling concrete

Drilling masonry and concrete products requires some special tools and accessories. When drilling concrete, brick or block, we’re dealing with a lot of aggregate, sand and gravel, held together with Portland cement. To cut through this material we need to use a pounding or hammering motion as well as a rotary motion. This pounding motion splits apart the grains of sand and aggregate, and the rotary motion of the drill drags the material up out of the hole.

Selecting the right drill and drill bit for your concrete drilling project

HAMMER DRILL WITH RAZOR BACK GRANITE BIT
 

Hammer drill with Razor Back Black Granite bit

Hammer drills are ideal for drilling holes up to 5/8” in masonry. Hammer drills usually have two functions—you can use the normal rotary drill function for drilling into steel or wood, but when you need to drill into concrete, use the hammer function. The hammer function is powered by two small disks inside the drill, which have very fine serrated edges. As they rotate inside the mechanism the serrated edges provide a very fine hammering and rotary motion—making it good for drilling a few holes no bigger than ⅝”.

EAB Razor Back Granite drill bits are industrial quality, carbide tipped drill bits, designed for heavy duty use with hammer drills. These bits are required when drilling holes into any masonry materials such as concrete, brick, block, concrete tile and pavers, stucco, and granite. Their precision ground carbide tips ensure fast starts, and their deep spiral flutes remove debris quickly.

SDS ROTARY HAMMER DRILL WITH EAB SDS BIT
 

SDS rotary hammer drill with EAB SDS drill bit

An SDS rotary hammer drill is ideal for drilling holes larger than ½” and up to 1½” in diameter in masonry and aggregate material. SDS rotary drills usually have three functions—a standard drill function, a hammer function, and for drilling  into concrete, a combination of drill and hammer function. This tool is much more powerful than the standard hammer drill mentioned above. It uses a piston type device moving the hammering process by as much as ¾” and therefore has a much larger throw. Because of this added power, an SDS rotary hammer drill is the tool of choice for jobs that require drilling dozens of holes in concrete.

The EAB SDS drill bits are professional quality, dual carbide tipped bits, designed to fit all SDS rotary hammer drills. Their precision ground carbide tips are harder, tougher, and more resistant to extreme loads for longer life. The unique flute design accelerates dust removal and reduces heat build-up and bit wear.

How to cut holes in tile and ceramic products

To cut holes in ceramic tile, porcelain, glass, granite, and marble refer to EAB’s selection of professional and industrial diamond tipped hole saws.

Exchangeable to save you money and save the planet

Like all EAB Exchange-A-Blade green exchange products, the Razor Back granite bits and SDS drill bits are fully exchangeable—you buy it, you use it, and when you bring it back to the store where you bought it, you’ll get a credit towards the purchase of your next EAB drill bit.
 

About Exchange-A-Blade drill bits

EAB Exchange-A-Blade drill bits are market leaders in quality and value. Available in a wide range of sizes to drill holes in wood, metal, and concrete products, EAB has something for everyone, no matter what your job.