⚒ crown on the concrete: practical advice on the choice of

Often, at the final stage repairs or there is a need to install new in the decoration of the new house sockets and switches. To install these electrical devices need to do for their nests in the wall - Enclosures. To make these holes, you will need a special tool - the crown on the concrete. We will understand how to select a tool and how they work.

What is a crown on the concrete, and why it is needed

Today, without a tool that is capable of drilling wells concreteYou can not perform any kind of repair. Choose a drill for concrete is not very difficult. But to buy the crown for Enclosures for concrete with the correct parameters can be only if a good understanding, it is made and what this drilling tool. Here is a list of problems that are solved with the use of the drill bit:

• laying various pipes (water supplyGas, heating, sewerage);
• creation of cable lines (for example, entering into the house when the cable route electrification garden, Cottage, etc);
• installing some types of fasteners, for example, anchor bolts.

But the main purpose in life - the installation of electrical devices: switches, sockets, and more.

Advantages and disadvantages of crowns on concrete

In the drill bit has a number of advantages. With proper selection of the desired hole diameter is obtained quickly. Another advantage - the acceptable level of noise during operation. But this tool is still not common enough to be in the set, which should be in every apartment. For this there are several reasons:

• the price can be quite substantial. Especially it concerns diamond tools. But now commercially available and budgetary patterns that can be purchased for a few hundred rubles;
• apply the bit can only be effectively elekroinstrumentom industrial grade;
• different types of building materials require different types of cutting elements;
• specificity of tasks. If you need to drill on concrete for solving a variety of tasks (hang shelf, Fasten the cornice for curtains, etc.), the crown is only the need for a large repairs.

In fact, usually the tool is purchased at home for a particular purpose. If you do not plan to engage in professional repair, you can buy the most budget model, Drill her hole 3-4 and then throw away, because it still comes into disrepair during work. You can also look for an opportunity to take a punch with the drilling tool at the time of friends, neighbors and so on.

For a professional, which often have to drill holes in concrete diamond crown, the instrument price will no longer seem unaffordable. Indeed, the use of this tool will save energy, time and allow to do the work much more precisely and accurately.

Design and operation of crowns on concrete

The main design element - a metal cup. In the manufacture of crowns, there is a tool steel, which is produced from the desired tube diameter and length. According to the end edge of the cup mounted solid "teeth", which will cut the stone, concrete, brick. The material and shape of "teeth" essentially depend on the cutting properties.

By Donets cup on the center stem is attached. This rod which is clamped in the chuck of the drilling machine, perforating, shock or unstressed drill. Depending on the shape of the tail crown rod becomes clamped in trohkulachkovy cartridge or cartridge type «SDS-plus», «SDS-max».

An important detail! The crown is usually equipped with a drill bit located at the center. His appointment - centering torque. Particularly important is the presence of the drill on models with a large diameter and length.

By design, there are parsed model (then pilot drill bit can be, if necessary, removed or replaced) or options that do not have such an opportunity. Usually collapsible made more expensive professional tools, and the ability to change the budget class of drills is not.

During operation, the rotating cutting edge concrete their teeth, plunging it deeper. Drill centering tool, not allowing him to move. Depending on the type of power tool may be a drilling unstressed or stressed. For different types of material to be cut, it can be an effective use of impact or non-impact mode. Drilling can be a dry or wet with water.

Types of crowns on concrete

Contrary to popular belief, the crown price of concrete for the sockets of the diameter depends not particularly strong. Much more important is that the material from which cutting teeth are made.

Pobeditovye crown Concrete

Win - a group of cemented carbide produced by sintering a powder of tungsten carbide. The teeth of this material are soldered on the cutting edge and able to cope well with the concrete during impact drilling method. Pobeditovye crown concrete «SDS max» may have a diameter from 20 mm to 100 mm.

Important! Win poorly relates to temperature fluctuations. Therefore, hole drilling is recommended in the dry mode.

Pobeditovye tool belongs to the budget class. Its main drawback - the high risk of loss of teeth in a collision with reinforcing bars in concrete. Stop the choice on the crown with pobeditovymi tipped stands for those looking for a tool for single use only. Price - from 300 rubles.

Tungsten carbide bits for concrete

The cutting edge of this class reinforced continuous sputtering of tungsten carbide powder. The appointment of such a tool - drilling without impact. The crown is easily able to cope with brick, ceramic tilesSo indispensable when installing sockets on the tiled wall. Crowns may be sold individually or as a set, when one shank can be fixed glasses of various diameters.

It is interesting! Most often, buy a set of more favorable, than to look for tungsten carbide crown piece.

The main disadvantage of this type - a very low survivability in a collision with the metal. Once is enough to stumble upon the reinforcing rod to the crown out of order.

Diamond drill bits for drilling of concrete

Another version of the tool for non-impact drilling in concrete - concrete diamond crowns for Enclosures. They can be used in a dry mode or when wetted with water. The edge of such a crown is divided into several segments deposited on it fine diamond dust or grit.

Diamond drilling tools have a number of advantages:

Comment

Andrew Feofanov

recruitment specialist tool "VseInstrumenty.ru"

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"Much better diamond drilling tools behave when dealing with moisture. In this mode, it produces less dust and reducing the temperature increases the drilling rate and prolongs the tool life. "

The main disadvantage of this type - the high price. Thus, diamond crown concrete DI-STAR 72 mm would cost about 4000 rubles.

Selecting the crown on the concrete in the parameters

To select the best model, you need to pay attention to its compliance with the required parameters for the operation.

Diameter and length

These parameters are the dimensions required openings. Standard size for installation Escutcheon - 68 mm. Other options are generally intended for laying pipe and cable lines. If there is no sale of products with the desired stem length, use an extension cord. It is important to make sure that the crown is not loose shank with clamping in an extension cord.

By the method of drilling and fastening type

Shank type depends on what kind of electric drive is used for drilling:

• hex flange for clamping in the drill chuck trohulachkovy. Standard diameter of the shank - 10 mm;

• SDS-plus - mounting standard for use in rotary hammers;
• SDS-max - similar to the previous, but differs enlarged diameter (20 mm). This standard is designed for high power industrial equipment.

Important! Flange standards are not interchangeable. Safety regulations prohibit the use of the tool shank is not an appropriate type of electric cartridge, even if they fit the diameter.

By way of drilling can choose an option by means of the table:

Recommendations for the use of crowns concrete popular sizes

When using any type of crown diameter and should observe safety precautions. Do not operate while standing on a ladder or other insufficiently stable surface. It is impossible to drill at the junction of slabs, as a high risk that the crown is stuck. Before the work necessary to remove the plaster to the drilling site, so as not to stumble randomly on the wiring or other unpleasant surprises. And, of course, you need to take care of safety glasses and a dust mask.

Diamond crown 68 mm Concrete

Although the crown price Enclosures for concrete with diamond cutting teeth and above, these are the crown prefer professionals. Speed ​​of drilling and durability - these are the reasons for the popularity. It is important to observe the rules of outlets location, switches and other electrical products.

Crown concrete for the perforator 110 mm, 120 mm

This class - the largest of used in everyday life. The industrial work can be used and larger diameters (up to 60 cm!), But because of the narrow scope of the demand for them is much smaller and find a tool to sell almost impossible.

Leading manufacturers of concrete crowns

Today, the release of the drilling tool, with which you can carry out the holes for Enclosures, engaged in both domestic and foreign companies. Popular domestic brands "Practice", "Anchor", "Bison" and "Trio Diamond dial," Ukrainian brand "Distar". Their cost is relatively low, but the quality is quite on the level.

Foreign brands tend to have higher quality and are durable. But the value of such products over domestic products. Among the most popular - brands «Keos Co ltd» and «Messer Cutting Systems» from South Korea. And, of course, well known high quality standards of the German company «Hagwert» and «Bosch».

Review of prices on the crown of the concrete for the gun, depending on the type and size

Depending on the manufacturer, diameter, length and length of the cup liner price diamond bit for concrete 110 mm can range from 1,500 to 8,000 rubles. and more. Estimate the order of prices for other products, you can use the table (according to Yandex. Market):

The crown 50 mm Concrete

The crown 70 mm Concrete

The crown 150 mm Concrete

Of course, these prices are approximate and may vary from region to region. But to estimate the order with their help you can cost.

Consumer reviews on the crowns of concrete

And what do ordinary users, based on our own experience, that already tested crown on the concrete in your work? Let us give one of the best.

Review on the crown of the concrete:

And if you have questions to the author, ask them in the comments below.