The best concrete drills for drills and hammer drills - design, dimensions and selection rules

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Concrete drills

Concrete is widely known for its unshakable strength and hard character. These are excellent performance properties. But, when installing concrete or processing it, they play against us, breaking ordinary drills and not giving in to ordinary drills. A concrete drill does an excellent job with such “stubborn” material, making the necessary holes quickly and efficiently.

There are many varieties of this tool. How to understand them, make the right choice, and how to sharpen a drill for concrete - we’ll talk about this in detail in this article.

What you need to know when working with concrete drills

Sharpening drill bits for concrete

Drill design

The design of the drill is quite standard. It consists of standard components such as a shank, cutting elements and chip removal elements. Made from alloys of increased hardness, the tip resembles the letter T.

Such tips are used when working with hard materials (metals, concrete, marble). To avoid confusion, it is better to look at a photo of a concrete drill.

Some of the best concrete drills are Pobedit drills. Pobedit is a special alloy of tungsten and cobalt, but quite a long time ago this alloy ceased to be used due to its high cost and was replaced by cheaper and higher-quality analogues.

The pobedite drill is presented on the market in very large quantities, but the brand name of the drill itself is not indicated on the description, which means that you can select it yourself based on your experience or the knowledge of the seller.

If you see drills with strange Chinese symbols, it is better to avoid this purchase, since they will only last for a couple of minutes of work (at best).

There is one tradition, the essence of which is to wet the tip of the drill (or the entire drill bit) with water. Some argue that this procedure will preserve the drill and lead to better work without breakage. But as production researchers found out, cooling the drill does not affect its operation in any way.

Also, a Pobedit drill can be sharpened quite easily, but this must be done carefully - there is a risk of overheating the drill and breaking off part of it. This should be done when the drill becomes dull.

Manufacturers

A good manufacturer also has a good price. Well, I mean high. I don’t recommend buying really cheap drills, even for one-time jobs.

Good quality drills are sold under brands that produce professional power tools. When making such equipment, they do not forget about the equipment. These include Bosch, Makita, Metabo, Aeg, DeWalt, Hitachi.

There are also companies that do not make instruments, but produce excellent accessories for them. There are many manufacturers here. In terms of price, they will be at the same level as previous drills. For example, I’ll name Projan, Drebo, Renhbor.

Well, there is a large amount of inexpensive equipment, among which, as I already said, you should not take very cheap options.

Of those that I had to deal with, Attack, Practice, Optim performed well. But these are not all the names. I repeat - there are a lot of them. Some other brand may be distributed specifically in your region. In any case, their prices are not that high, so you don’t have to be afraid to try them out. If you like them, you will take them in the future, and if you don’t like them, then experiment with something else.

And if you want to immediately buy good drills, then take one of those mentioned above.

Yes, and do not confuse a drill bit with a hammer drill bit. The latter has a special seat that does not allow it to be properly fixed in the cartridge.

This is my opinion about concrete drill bits. In the end, I will say that concrete is still drilled with drills, but these are only professional units for diamond drilling, and if you don’t know anything about them yet, then they are not for you.

And I’m ending the article here - I hope I was able to explain everything! See you again!

Correct selection of drills

The main criterion will be the choice of drill according to the chuck. Depending on the hammer drill chuck, the drill is also selected, because another type simply will not work.

After this, you need to choose the required size. When choosing a drill, choose a size that is slightly smaller than the required hole. This is due to the fact that when the hammer drill operates, an error is created, which crushes the concrete (and other elements) around the circumference as the drill moves. The assortment on the market is very large, so it will not be difficult to choose a smaller one.

The third thing you need to pay attention to is the length. It's a matter of the depth of the required hole, and the assortment allows you to find what you need.

But long drills with half a meter and a diameter the size of a match simply do not exist - as the length increases, small diameters are discarded and vice versa.

Main types of concrete drills

A distinctive feature of a concrete drill from others is soldering. It is created from a strong alloy, due to which a hardness similar to diamond stones is achieved. Craftsmen call these types pobedit; these products differ in strength from other types that are created for metal or wood.

There are 2 main types by which concrete drills are classified:

for a drill - consist of a shank for a nozzle, which is made in a cylindrical or multifaceted shape. The dimensions are small, the product is suitable for creating holes in many hard materials, for example, brick, foam block. It is recommended to use a high-power drill, which will allow you to drill into concrete,
for a hammer drill - the drill is cylindrical in shape, has a shank, designations SDS PLUS or SDS MAX. The goods themselves are quite large and long, suitable for reinforced concrete structures.

If you need to create holes in a reinforced concrete structure using a simple drill, then it is not always possible to solve the problem with just a drill. You need to use a hammer drill, and for this tool, drills are divided into the following types:

screw - used to create deep holes,
spiral - suitable for large holes,
flat - used for drilling passages of different sizes and depths.

For proper operation, you will need to not just insert the drill into the chuck, but snap it into place. To make this task easier, the products have a slight thickening at the very end. It should also be noted that the products are considered professional tools, since they can be used to create holes from 4 mm to 3 cm in diameter.

If you need a larger hole, then the crown type will come to the rescue. Such products make it possible to make a recess of 12 cm in diameter. The products are very durable and are produced in several versions:

diamond - visually made in the form of a pipe or crown, mounted on a rod, the edges are coated with diamond, which ensures high strength,
pobedit - similar to an attachment, the main difference from diamond is the absence of sputtering; it is replaced by special teeth made from pobedit.

It is recommended to use crown products for holes for sockets, switches or wiring, and other communications. To select a suitable concrete product for a drill, you will need to take into account not only the parameters of the element, but also the dimensions of the future hole. Based on this, the length of the drill is selected, which depends on the diameter:

diameter 4 mm - length 5 cm,
5 mm - 10 cm,
6 mm - 15 cm,
8 mm - 25 cm,
10 mm - 54 cm,
12 mm or more - up to 100 cm.

It turns out that for large holes a long concrete drill is used. If you use thin instruments, there is a risk of damage due to increased load.

The best metal drills

Metal drills can be twist, step or milling. They are made of high-speed steel and have a special sharpening. As a rule, the range of applications of such a tool depends on its angle.

Graff GMSD430

4.9

★★★★★

editorial assessment

95%

buyers recommend this product

The drill is made of high-quality high-speed steel of increased hardness. Fourteen steps with a pitch of 2 mm make it possible to produce holes with a diameter of 4 to 30 millimeters without replacing equipment. Each level is marked accordingly to make drill selection easier. The number of available sizes is 14.

The special tip point allows you to quickly get started. For more reliable fixation in a self-clamping or jaw chuck, the shank has a triangular design.

Advantages:

high strength;
size markings;
a large number of steps;
neat work;
secure fit.

Flaws:

heaviness.

Graff GMSD430 is suitable for making holes in sheet metal. A universal choice for both home and professional use.

Bosch PointTeQ 2.608.577.174

4.9

★★★★★

editorial assessment

94%

buyers recommend this product

The main feature of the PointTeQ drill is its self-centering tip, which ensures easy and smooth drilling. The two cutting edges remain sharp for a long time, guaranteeing neat holes.

Stayer 29660-6-20-8

4.8

★★★★★

editorial assessment

90%

buyers recommend this product

The equipment is made of high-quality high-speed steel and has a triangular shank with grooves, which allows you to transmit maximum torque. The special geometry of the drill guarantees accurate holes of various diameters.

The length of the tool is 75 millimeters, standard sizes of steps are 6-20 mm. To prevent jamming during operation, cross-shaped points are made on the cutting edge.

Advantages:

durable metal;
accurate drilling of various diameters;
cross point;
secure fit.

Flaws:

high price.

Drill Stayer 29660-6-20-8 is suitable for precision work with sheet metal.

Granite 165078

4.7

★★★★★

editorial assessment

84%

buyers recommend this product

The model is made of high-speed steel and is durable and fracture-resistant. The self-centering tip reduces the chance of the drill bit drifting, ensuring clean holes.

The length of the main part is 102 millimeters, diameter - 7.5 mm. For reliability and smooth insertion into the material, the main surfaces of the tool are ground on all sides.

Advantages:

high strength and durability;
secure fit;
neat drilling.

Flaws:

heats up quickly.

Drill Granit 165078 is designed for making through and blind holes in workpieces made of steel, cast iron, bronze, and aluminum.

Features of drills

In order to choose the right drill for concrete structures, without making mistakes, you will need to know the features that distinguish them from products for metal and other materials.

The shape of the working area will be quite blunt; this area is made of a Pobedit plate. This type is suitable for concrete as woodworking products will include sharp tips. Due to this, at the beginning of the work, the wood is stuck inside, and only then a hole is made. The working area of a metal product is similar to a cone with no sharp points.

The color of concrete products is often metallic white. Products for wood will be strictly metal, and for metal, black colors are used.