Drills for a hammer drill for concrete: parameters and selection rules

Having the proper tools is crucial when working on any concrete project. The most potent and adaptable of these tools is the hammer drill. However, the kind of drill bit you use has a big impact on how effective a hammer drill is. Selecting the appropriate drill bit for concrete can help you work less laboriously and more quickly.

Concrete is a hard substance, so specific drill bits made to withstand its hardness are needed when drilling into it. Concrete can quickly wear down standard drill bits, unlike wood or metal, so it’s important to use bits designed specifically for this purpose. Usually, these bits have a carbide tip, which is strong and able to cut through concrete’s thick layer.

When choosing a drill bit for your hammer drill, there are a few important factors to pick from. Significant factors influencing the bit’s performance are its length and diameter, kind of shank, and material composition. Making the best decision can also be aided by being aware of the particular requirements of your project, such as the concrete type and hole depth.

You can make sure that your hammer drill performs at its peak, enabling you to finish your concrete drilling jobs quickly and precisely, by carefully taking into account these factors. The correct drill bit makes all the difference when hanging shelves, installing fixtures, or working on bigger construction projects.

Important parameters

Poking holes is a common requirement during construction and maintenance. An electric drill will work fine on wood, plasterboard, or brick surfaces; a hammer drill is needed on concrete.

This tool can both drill holes and apply an impact load at the same time; it works similarly to a jackhammer. It is therefore required to install an extra tool. It is not the same as a traditional drill:

• the shape of the spiral part;
• a special cavity inside;
• the use of a hard alloy for the manufacture of the working surface;
• the number and parameters of the cutting parts.

With the aid of a shank, the tool is inserted into the chuck and fixed firmly. The most popular kinds of shanks are as follows:

• a shank, which is a distinctive feature of the tool (made of high-strength steel, installed in the chuck of the hammer drill);
• a spiral-shaped rod (alloys are used in its manufacture, which give the products increased strength);
• soldering (the cutting part of the drill, it affects the quality and time of work).

Depending on how many faces there are, they are:

• 3-sided;
• 4-sided;
• 6-sided;
• cylindrical;
• SDS.

How to choose the right drill

You should take the strength of the materials being processed into account when selecting a tool. Experts advise:

• use tools with a flat spiral part to create holes in concrete structures (they are more durable and long-lasting);
• give preference to tools from reliable manufacturers (their products are of good quality, reasonable price, the equipment is well suited for the hammer drill chuck).

The most well-liked producers are:

• Bosch;
• Makita;
• Diager Twister;
• Sturm.

Length is important.

• for household purposes – 6 * 110;
• for electrical wiring, furniture installation – 12 * 220;
• for heating, plumbing installation – 24 * 460.

Drills and drills: differences

The drill and a drill have differences in appearance, even though they look similar:

• the drill is intended for a drill, the drill is for a hammer drill;
• The drill shanks have special recesses, the drill shanks are even and smooth;
• a drill is harder than a drill, so it can create holes in concrete;
• When creating holes, the drill performs simultaneous rotational and impact movements, so productivity increases several times.

The SDS fastening system, which is used to secure the drill in the hammer drill chuck while accounting for the drill’s diameter in millimeters, was created by Bosch specialists:

• SDS – for a 10 mm tool with 2 slots;
• SDS-plus – used for 10 mm and 4-slot tools;
• SDS-top – for securing a 14 mm tool;
• SDS-max – for professional equipment – 18 mm;
• SDS-quick – the grooves on its shank are replaced by protrusions.

The assignments that must be completed should be considered during the selection process.

It is advised to select a tool:

• for creating small holes (slightly rounded cutting edges provide more strength);
• crown type for drilling large holes (diamond drills).

Features of drill design

A concrete processing drill includes the following parts:

• shank;
• spiral rod;
• cutting part.

All of them are divided into:

• self-sharpening (suitable for holes that need to be drilled to a great depth, often go well with SDS-plus shanks, used in the process of installing medium-heavy structures);
• flat (used to create holes to a shallow depth, requiring a lot of effort when performing the work);
• spiral (have large drilling diameters, suitable for dismantling thick walls and upcoming large volumes of work).

In order to enhance the quality indicators while building, you ought to:

• use the tool operating speed recommended by the manufacturer;
• remove the drill from the hole after 10 seconds of operation to avoid overheating;
• drip a few drops of oil onto the shank and chuck of the equipment before starting work;
• control the drilling axis to avoid breakage of the tool;
• use a drill with a diamond coating for concrete surfaces with a large amount of reinforcement.

Selecting the appropriate drill bit for a hammer drill is essential to working with concrete efficiently. The perfect drill bit should be made of sturdy materials like carbide to withstand the hardness of concrete, and it should have the right diameter and length for the task at hand. Furthermore, choosing the appropriate kind—such as an SDS bit or masonry bit—ensures that your hammer drill will work with it and enhances performance. Drilling efficiency can be greatly increased and tool damage can be avoided by being aware of these factors and adhering to selection guidelines.

Tool dimensions

It is important to consider the type of work to be done when selecting the size. The following criteria need to be considered:

• diameter of the working part and shank;
• working length.

The drill sizes range from 4 mm to 30 mm. You can use tools with a length of 6 to 10 mm to drill holes for switches and sockets.

Drills measuring between 6 and 10 mm are good for use in home settings. For heavy structure installation, use between 10 and 20 mm. Some models have a spiral rod that collects small debris and removes construction dust.

The tool’s length can vary from 50 to 1000 mm, though 100 mm is the most common length. It might be necessary to use a tool 500 mm in length to diamond drill walls. The drill’s length should be shorter the smaller its diameter (to avoid breaking during operation). More powerful equipment is needed for larger drills.

When working with concrete, selecting the proper drill bit for your hammer drill is essential for the longevity of your equipment as well as the effectiveness of your work. It’s critical to comprehend the various characteristics of a high-quality drill bit, including material, coating, size, and shank type. The effectiveness and lifespan of the bit are determined in part by each of these variables.

When choosing a drill bit, take your project’s particular needs into account. A bit with a carbide tip is usually the best option for heavy-duty tasks because of its toughness and endurance when drilling through concrete that is difficult to drill through. Bits with specific coatings can also lessen heat accumulation and friction, which will increase the bit’s longevity.

Another important factor to consider is the bit’s size. Make sure the bit you select fits the holes’ requirements for depth and diameter. Not only does using the proper size guarantee accuracy, but it also keeps your hammer drill from wearing down needlessly. To guarantee a tight fit and best performance, the shank type should also be compatible with the drill model you’re using.

You can improve the effectiveness of your drilling operations and preserve the caliber of your equipment by adhering to these selection guidelines. Purchasing the proper drill bits might seem like a minor detail, but it can have a big impact on how your concrete projects turn out. Enjoy your drilling!

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