What is the diameter of the crown for socket boxes. How to drill a hole in concrete for an outlet or switch. Installing junction boxes in walls

AT domestic work ah (during redevelopment, overhaul, changing the interior) the problem often arises, how to make a hole in brick or concrete walls for a socket, switch or pipes to be laid? Ordinary drills for wood or metal in such cases, of course, are not applicable: they will instantly fail. Need special tools, including drill bits for concrete(according to hole diameter) size.

The shape of this construction device is a hollow cylinder, the upper edges of which have cutting sections for drilling holes with a diameter corresponding to the diameter of the crown. The cutting part can be made of various materials (pobedita, with diamond or tungsten carbide coating) and is much harder than concrete.

Backside The cylinder is a closed side, equipped with a fastener - a flange. Flange shapes may vary, which should be considered when purchasing a tool for specific model drills.

Since this toolkit is often used to drill holes for sockets, it is called so: a crown for concrete sockets. It is possible to make a hole over 30 mm in diameter using a special crown not only in concrete - a tool with such a nozzle will successfully cope with other types of working materials:

• brickwork;
• concrete with solid filler, having a small, medium or a high degree reinforcement;
• artificial and natural stone

The dimensions of the crown for concrete are determined in accordance with the diameter of the desired hole: it can be the diameter of the socket or the diameter of the pipe.

The scope of crowns is quite wide: in addition to installing switches and sockets, they are used when laying or replacing communication lines or electrical wiring.

Crowns for concrete. What are there?

There is a generally accepted classification that distinguishes several main types of concrete crowns for sockets or other elements. We list the most common:

1. Carbide drill bits from Pobedit- the most popular among home craftsmen for making several holes. Having a lower cost compared to analogues, crowns of this type are distinguished by strength and durability. However, there is also a limitation on the use of drill bits with hard-alloy nozzles (soldering): their use in areas of the working material with a reinforcing structure is excluded due to the possibility of "flying" soldering when it hits the reinforcement elements.

The sizes of such crowns are very different due to a wide range of possible works in normal conditions(for personal domestic use): minimum diameter is 35 mm, larger diameters are in the range of 110-120 mm.

1. Diamond drill bits for concrete drilling, which have technical (industrial) diamond inclusions in their segments, can be used for drilling concrete and reinforced concrete. With the help of such a crown, even the hardest walls can be coped with, including short-term work on metal fittings. Crowns with diamond grit make holes with very smooth walls.

The sizes of diamond crowns vary in a wide range: from 25 -130 mm for domestic work to 600 mm for industrial drilling machines. Quite expensive high-quality specimens (the price varies in the range of 1000 ... 8000 rubles: the thinner the crown and its length, the cheaper it is) justify their purchase when performing a large amount of work, significantly saving time and labor costs. Professional craftsmen performing large volumes complex work prefer this type.

1. Area of ​​application of crowns with tungsten carbide coating– making holes not only in brick and concrete, but also in ceramic or tiles. The combination of properties and technical characteristics of several types in one tool makes it unnecessary to purchase different crowns and allows you not to change them when performing complex work, which significantly saves time.

The power of a rotary hammer with a hexagonal shank used for working with tungsten carbide drill bits must be at least 800 watts. A serious disadvantage of using crowns of this type is their failure when they meet reinforcing / metal elements in the material.

Concrete hole sizes

For a competent selection of a crown that is suitable in size, you should know the diameter of the hole being made for the socket or other element - for example, for the cross section of pipes or the size of the wire route when laying communications. When purchasing a crown in a store, you should check with a consultant about it. specifications indicated in the accompanying documentation or labelling.

Crowns can be sold as individual tools, as well as special sets of several pieces of various sizes.

Most sockets or switches have a standard outer diameter of 68mm.(with an inner diameter of 60 mm), therefore, 68 mm concrete socket bits are the most popular in use. Less commonly used nozzles are 70 and 75 mm.

For laying communication routes, the most common option is a crown for concrete with a diameter of 300 mm.

The choice of instrumentation is also influenced by its length and the number of segments of the cutting part: 5, 6 or 8 - the larger this indicator, the higher the productivity of the crown. A centering drill is also included in the package of the crown for concrete for socket boxes, the role of which is to fix the crown in the center of the hole being made, preventing it from “walking” in the working material. The center drill needs to be changed frequently as it dulls quickly. The crown for concrete is designed for penetration into the depth of the material up to 1.5 meters.

If necessary, go from the opposite - the outlet has already been purchased, and the size of the hole is unknown - you should measure the outer circumference of the outlet with a caliper. The resulting indicator will determine the diameter required to make the hole.

Of the models of branded manufacturers, Bosch, REMS, DeWalt, acceptable quality and the budget price is offered by the South Korean Arix and the Chinese SuperHARD. Among domestic manufacturers, DISTAR and "" should be distinguished.

Laying or replacing communications, wiring, switches, sockets are common repair procedures. In most cases, the walls in the rooms are brick or concrete, and holes for these devices must be drilled in them. That's what special drill bits are for.

Characteristic

Socket boxes are used for the convenience of wiring on concrete and brick. Their standard sizes are:

• diameter inside - 60 and 68 mm;
• depth - from 25 to 80 mm, traditionally - 40 and 45 mm;
• center distance - 71 mm.

The crown is special device for drilling holes in concrete. In shape, its end resembles a crown. Since the tool is often used for drilling holes for a socket, it is called a hole for concrete sockets.

Buy concrete crowns for socket boxes and 1000 more necessary little things you can in the store Diammarket.ru

It can be used to drill concrete, masonry, artificial or natural stone, as well as reinforced concrete. The crown can drill to a depth of 1.5 meters. The size of the hole depends on the diameter of the crown itself, which can be quite wide.

Material and shape

The concrete crown looks like a piece of pipe, the upper edges of which have special cutting sections for drilling holes for sockets and other elements. The cutting surface is made of hard alloy, it is much harder than concrete and can process it without collapsing.

The other end of the cylinder is equipped with a flange (fastener) - it serves to attach the fixture to the drill cylinder head.

Drill, additional parts

The drill must have a sufficiently large head and high power. Drills of the following types are used:

• pneumatic, which are driven by a stream of compressed air;
• electrical;
• special drills.

The set of drill bits for concrete socket boxes also includes a centering drill. It is fastened in a special knot so that the crown “does not walk”. Such a drill needs to be changed often - as a rule, it quickly becomes dull. In addition to conventional carbide cutting surfaces, drill bits can be diamond-coated, for which industrial diamonds are used.

Such crowns are extremely durable, do not require sharpening and are able to drill the most durable surface.

Kinds

For correct operation with concrete or other processed material, you need to choose the appropriate type of tool. When choosing a crown, you need to consider the following conditions:

• properties of the drilled material;
• drill power;
• working conditions.

Carbide

Crowns for socket boxes with hard-alloy nozzles (surfacing) are used most often. They cost less than other crowns and are used for drilling in normal conditions, in the home for personal use.

Such a crown is created by applying soldering from a strong alloy to the cutting surface of the tool. A feature of such drills is that the solderings fly out during drilling when they hit the reinforcement. Therefore, they are not suitable for concrete sections with reinforcement.

Diamond

The strength of such a crown is similar to a diamond wheel - it cuts concrete just as well. Such a product is most effective for drilling concrete, reinforced concrete. quality tool of this type has a high price, but this is justified by durability, saving labor costs and time. This crown is ideal for a large amount of work.

The cutting surface of this tool is coated with technical diamonds and is capable of cutting through rebar. It is suitable for work in very difficult areas. When working with it, it is still recommended to avoid areas with metal - this will prolong its working capacity.

Tungsten carbide

Crowns for socket boxes with tungsten carbide coating are used for drilling ceramic tiles except for concrete, stone and brick. This type of tool is very handy for working with various materials at the same time: it does not need to be changed and you can immediately move, for example, from drilling concrete to creating holes in ceramic tiles, and then to working with brick or stone.

Such a tool combines the properties and technical characteristics of several crowns.

The tungsten carbide crown has a hexagonal shank, it is used for drilling with a conventional drill. Its power should be 800 watts or more. The only significant drawback is that this type of crown fails when it hits reinforcing bars or metal elements.

Dimensions, parameters

To determine the size of the crown and its choice, you need to determine the diameter of the drilled hole for the socket. These tools are sold individually and in a special kit that contains everything desired diameters. When buying a tool in a store, you can check with the seller for what size socket boxes it is suitable for. This data is indicated in the instructions or marking of the tool.

The standard circle size is 68 mm. Most regulators, socket switches are created for it, so the 68 mm product is the most popular and common. Less commonly used tools are 70 and 75 mm. Crowns are also available in sizes from 8, 10, 12, 20, 24, 32 mm.

If an outlet is purchased, and the hole size is unknown, measure the outer circumference of the outlet with a caliper, this will be the diameter of the crown (68, 70 or 75 mm). For the selection of a suitable tool, its length and the number of cutting segments are also important, there can be 5, 6, 8 of them - the more, the more effective the tool.

Application

Before starting work, it is necessary to carefully and carefully prepare the tool for operation.

Assembly

Before use, the tool must be properly assembled:

• the first thing to do is to insert a drill from a win, it is bolted;
• further, a bowl is attached along the thread;
• check the assembly: it should be strong, nothing should stagger.

If assembled incorrectly, it is possible to break the drill or bowl, and the master can be injured.

drilling

After assembly, they start working. To do this, use a hammer drill or impact drill. A conventional drill can also be used, for example, for hole saws in ceramic tiles or material of low thickness and hardness. Drilling concrete of normal thickness with a conventional drill to the depth required for an outlet will take half a day, so it is better to use a hammer drill.

First, markings are made at the site of the future socket, a point for the centering drill is marked. He is directed into it, and drilled. In this case, goggles, a respirator, construction gloves are used. After drilling, the tool is removed and the central part is knocked out. This is done with a simple punch drill, chisel, hammer. Diamond crowns make a hole with very smooth walls. After drilling, you need to let the crown cool down - so the soldering will last longer.

Prices, manufacturers

If you need a crown for one or two drillings in ordinary concrete without reinforcement, you can buy a cheap one (Chinese). After a small number of drillings, it will “die”, as the victorious soldering will fall off.

The most expensive are diamonds. Their prices range from 1000-8000 rubles. - the smaller the diameter and length, the cheaper the crown.

Crown 152 mm. manufacturer of the middle price category (South Korean Arix) costs about 8,000 rubles. A product for 14 mm from the Chinese Super HARD is about 900 rubles, it is also for 68 mm - about 2000 rubles. Special drill bit for concrete for socket holes small size in glass and tiles costs about 500 rubles.

Conventional carbide-tipped bits are much cheaper. Such a product of a domestic manufacturer with a diameter of 50 mm can cost 150 rubles, 65 mm - 375 rubles, 68 mm - 420 rubles. The cost of Chinese products is approximately the same, and in some cases even cheaper. Other foreign brands (Europe, USA) are twice as expensive.

BOSH, CEDIMA, REMS, Rothenberger, Dewalt are expensive brands with excellent quality. South Korean firm Arix, Chinese Super HARD demonstrate acceptable quality and reasonable price. Chinese Werk - cheap and cheerful. Good, but rather expensive domestic manufacturer DISTAR (Ukraine, Russia, Belarus), "Adel".

Not everyone knows what is a socket. Especially if everything is in order with electricity in your apartment. But once the socket falls out of the wall, you will see the socket. This is the socket into which the socket or switch is inserted. They are mounted inside the wall, and serve as the place where the wiring meets the contacts of the socket or switch.
There are several types of sockets. Most often you can find two, a socket for concrete, or drywall. Socket boxes for concrete are also used in installation work brick walls, foam concrete, aerated concrete, and others with similar characteristics. To install such a socket in the wall, a special hole is made in it.

A socket is attached to it with the help of special solution, gypsum or asbestos cement. It is possible to make such a hole different ways. The simplest of them is to use an electric drill or a puncher with a special nozzle, a crown for socket boxes.

Concrete crown for socket boxes

A crown for sockets resembles a part of a metal pipe, where one end is equipped with cutting elements, and a flange with end fastening is located on the other. A centering drill is located in the center of the pipe. And the holes on the sides of the pipe serve to remove dust when drilling.

With such a crown, it is best to work with a hammer drill, in extreme cases, with an impact drill. To drill a hole for a socket, first of all, determine its center point.

The depth of drilling is determined by eye. Usually the depth of the crown is slightly greater than the depth of the socket.

Having completed drilling, we take out the crown, and using a chisel and a hammer, we remove the inside. You can do this with a perforator. On average, the hole takes no more than 10 minutes.

When drilling walls, a lot of dust is generated. Protective measures should be provided in advance, protective mask, or a respirator, and goggles.

What is a concrete crown made of?

The standard crown set includes:

1. Flange mount adapter for SDS Plus, or SDS Max.
2. Center drill.
3. Crown with incisors. Depending on the model, the cutters are victorious, diamond, and with other high-strength alloys.

Crowns for holes for socket boxes are available different diameters. The most running 68 mm, 70 mm, 73 mm, 75 mm.

Crown types

A crown is a tool for making holes. They are distinguished according to the characteristics of the material to be drilled, concrete, wood, expanded clay, drywall, and others. And also by the type of cutting edge, diamond, victorious, tungsten.

Diamond hole saw for concrete sockets

Diamond crowns, regardless of the manufacturer, will allow you to quickly and accurately drill holes. It is good to use it with a large amount of work, or in cases where greater accuracy and accuracy of the work performed is required. Thanks to the spraying of technical diamonds, the crown copes with hard walls.

Although it is not advisable to use it in walls where there is a lot of iron fittings. When in contact with iron, it wears out quickly. Also, when using it, it is better to switch the puncher to drill mode.

Diamond crown afraid impact loads. It is desirable to use it where accuracy is needed when drilling holes, as an example, to make a hole in a tile.

The only drawback of a diamond crown is its price. Depending on the manufacturer, it starts from 2000 rubles .

But there is also good news. Diamond crowns can be restored. There are special companies for this.

Before restoration, the crown undergoes a special examination, where its suitability for restoration is checked.

It should be well centered, without horizontal beats. And have an acceptable degree of deterioration.

In order for the diamond crown to last longer, you must adhere to right conditions operation. This is taking into account the characteristics of the material and cutting mode, and compliance thermal regime. Protect crown from overheating.

In construction, several types of diamond crowns are used:

1. Crowns of the KS series are used for drilling precise holes in concrete and other materials of similar density. Polycrystalline diamonds were used as cutters. Designed to work in hammerless drilling. They do not like shocks and vibrations.
2. Serrated crowns are designed for percussive drilling. They are the most widespread on the market. Suitable for most rotary hammers. They don't like fittings. When drilling holes in reinforced concrete, the teeth, catching on the reinforcement, can break.
3. Crowns for drilling porcelain stoneware and metal. The advantage of these crowns is dry drilling. The main disadvantage of this type of crowns is the control of pressure and the number of revolutions. Failure to follow the instructions for use may result in damage to the instrument.

Victory crown for socket boxes

In the manufacture of victorious crowns, high-strength steel with victorious soldering is used.

By design, it resembles diamond crowns. The crown resembles a bowl in its appearance, in a circle of which pieces of pobeda are soldered.

In the center of the bowl there is a hole for the crown retainer. A latch is inserted through it for fastening drill drill, and the lower part becomes a perforator.

The work of the crown is similar to the action of the drill bit. After the drill enters the wall along the marked center, the victorious cutters installed along the edges of the bowl begin their work.

cutting concrete wall in a circle, gradually deepening into the wall. After reaching a certain depth, we knock out a piece of concrete of the sawn middle part.

When choosing a victorious crown for yourself, do not skimp on quality. Cheap crowns fail quite quickly. Optimal price-quality starts from 1200 rubles . Do not overheat the crown. When overheated, delamination of victorious solderings is possible.

Tungsten carbide crowns

These crowns use a tungsten carbide coating as a cutting edge.

This alloy has good cutting characteristics, but is inferior to diamond coating in terms of its strength. Despite this shortcoming, such crowns are cost-effective.

They work well with concrete and brick walls. They are also easy to drill holes in ceramic tiles.

Tungsten carbide crowns can be used with an ordinary drill. They cut concrete, stone, brick well, making even holes.

The main precautions in working with such bowls:

• Do not use them in places where there is metal.
• Protect from impact loads.
• Do not use drill bits with low power tools. The drill must be at least 800 watts.

The cost of tungsten carbide crowns depends on their diameter and the manufacturer's company. Starts from 750 rubles.

The size of the crown for the socket

For non-professional installers electrical networks, then if you need to install an additional outlet. You will have a question about the selection of the correct diameter of the crown for drilling a hole for the socket.

To get an answer to this question, check the diameter of your socket. With this information, feel free to go to the store to purchase a crown. In order not to make a mistake when choosing, ask the store employees about the diameter of the holes resulting from the use of a particular crown.

The standard size of the socket is considered to be a diameter of 68 mm.

Under this standard, switches, sockets and other switching devices are produced. To drill holes for switches and sockets, a crown with a diameter of 68 mm is massively used. Crowns with diameters of 70, 73, 75 mm can also be used.

Sequencing:

• The acquired crown must first be properly assembled. First we insert the central drill and fix it with bolts. Then we fix the bowl along the thread. AT assembled, everything must be tightly fitted, any looseness is not allowed. Such deficiencies can lead to breakage of the bowl or drill, and cause injury to a person.
• When the crown is assembled, you can start drilling concrete. Use a perforator for this purpose. If there is no perforator, do not despair. An impact drill will work for your purposes. conventional drill not suitable for drilling holes in concrete. The process of using it can take a long time.
• Before you start drilling, make precise markings of the places where you are going to install your sockets and switches. Determine the places where the marks for the center drill will be set. Accurately match the drill with the mark, start drilling.
• Use tools while working personal protection , respirators and goggles. During operation, there will be a lot of fine building dust in the air.
• After finishing drilling work, put aside the punch with a crown, and remove the central part from the hole in the socket. To do this, you can use a puncher with a drill, or an ordinary chisel with a hammer.

Good advice is not to over-save. Do not buy cheap Chinese-made concrete crowns.

They got a bad reputation. They withstand a small number of drillings, then die safely. Their victorious incisors fall off. This is the case when the miser pays twice.

Since the most running hole is 68 mm, and you do not know the exact size of the socket you bought earlier, just take a caliper and measure the outer diameter. You will receive an answer as to which crown you should purchase.

In "Instrument-24" you can buy products from leading manufacturers - ADTnS, Baumesser, Distar, Diamond Hit, Strong, Milwaukee and so on. Socket boxes greatly simplify the repair and construction works. Masters do not need to use auxiliary materials, install unaesthetic outdoor sockets. With crowns, you can quickly, accurately drill mounting hole even in reinforced concrete. Diamond segments also "cope" with bricks, masonry and other materials.

How to choose a crown for a socket

When choosing diamond models, you should pay attention to technology. For example, the micro-shock dry-cut sockets produced by Diamond Hit do not generate dust, like equipment that uses soldered-in solders. They work with standard non-percussive drills and drill clean holes for electrical, wiring and more.

If you need to work quickly, on concrete or other solid material, use tools different class, Messer diamond models will fit. This equipment with a hex adapter for connecting different drills, which increases the speed of operations by up to 30% and does not require additional cooling.

When selecting, the nature of the work is also taken into account:

for through holes, niches of small depth, models with a diameter of 6.8-8.2 cm are suitable;

for technical niches - from 8.2 cm;

for electrical wiring - from 1.2 cm.

"Instrument-24" - a wide range and convenient purchases

In the catalog of our website there are many diamond tools with different performance characteristics. Tool-24 offers inexpensive models for universal works, "advanced" equipment for efficient work on reinforced concrete and other hard surfaces. Our crowns:

thanks to diamond segments they reduce noise, vibration and are suitable for use in residential buildings;

designed for dry drilling - safe when working near electrical wiring;

are made from durable steel, diamond raw materials and have a long working resource.

To order our products, use the form on the site, call or write to our managers. Delivery of purchases is carried out in Moscow and to the shopping mall, when sent to the regions of the Russian Federation.

During overhaul electrical work is usually carried out. They provide for the laying of new electrical wiring, as well as the installation of special socket boxes that facilitate the installation of electrical switches and sockets. For forming cavities in concrete walls, brickwork and surfaces from cellular concrete concrete crown is used. It simplifies and significantly speeds up drilling operations. Let us dwell in detail on the device of the nozzle, its varieties, characteristics, as well as technological features process.

Why do you need a crown for socket boxes

Crown for concrete sockets - the purpose of the device

A crown for concrete is a universal device that allows you to form cavities and channels with increased surface cleanliness to solve the following tasks:

• installation of sockets;
• installation of switches;
• pipe laying.

The performance of the tool allows you to drill a variety of materials:

• concrete surfaces;
• masonry;
• brick walls;
• various types of blocks.

Previously, before the appearance of a diamond or victorious tool, conventional drilling was used to perform similar tasks using a perforator or an electric drill, and a grinder equipped with a circle for concrete was also used. However, with the advent of carbide heads, electrical installation operations have been greatly simplified. Concrete bits are significantly superior to outdated tools in terms of efficiency.

Concrete crown for sockets - nozzle device

Concrete crown for socket boxes

The crown for the socket for concrete is a special device for an electric drill. A drill bit for concrete for a hammer drill or a pneumatically driven tool can also be used. Outwardly, it is a body of revolution with working segments on the end part and a metal axis connecting the chuck of an electric or pneumatic tool with a crown for a socket in concrete.

The socket crown consists of the following parts:

• drive shaft made of durable steel. One side of the shank is threaded for flange connection cutting tool. The other end of the shaft is fixed in the jaws of the drill chuck or perforator;
• centering drill, designed to work on solid building materials. The drill shank corresponds in diameter to the size of the hole made in the end part of the drive shaft. The centering drill is fastened by screwing the threaded lock;
• working body, which is a cutting nozzle. The flanged part of the crown is threaded to the metal axis, and the working part has segments for cutting concrete. cutting edge It is made of carbide materials, the strength of which allows you to process any surface.

Bringing the tool into working condition is carried out by connecting constituent parts and does not cause special difficulties. Depending on the tasks performed, crowns that differ in size and material of the cutting edge can be used.

What is the best crown for socket boxes - varieties and features of nozzles

The sequence of installing a socket in a concrete wall

For efficient drilling of cavities, it is important to choose the right working tool, taking into account the strength characteristics of the building material to be processed. Depending on the tasks, the crown for concrete differs in the material of the cutting surface.

The following types apply:

• diamond crown for socket boxes installed in concrete;
• tungsten carbide nozzle for processing bricks and ceramics;
• a tool with a cutting edge made of Pobedit.

Let's take a closer look at each type.

Diamond crown for concrete sockets

The main feature of a working tool with diamond coating on the cutting edge is the possibility of forming cavities in a solid mass without impact. This technology allows you to ensure the correct geometry of the holes. Perfect purity surface distinguishes the formed cavities from the holes obtained by the tool with victorious soldering.

When working with diamond-coated nozzles, two methods of drilling a concrete mass are used:

• with submission to working area water. Drilling is carried out by a professional tool;
• without forced cooling. Processing is done with a drill or a conventional puncher.

Concrete diamond crown (undercut)

Accordingly, each technological method processing is carried out by various tools:

• wet cutting diamond bits. The cutting segments are attached to the body of the working head using carbide solder. To maintain a stable temperature of the diamond nozzle, which heats up at an accelerated rate in contact with concrete, water is supplied. This allows you to extend the service life and reduce dust formation. The working head is subject to restoration when worn;
• heads with a cutting edge made of diamond grit, which is able to save operational properties with a significant increase in temperature in the cutting zone. This allows you to perform operations on the formation of channels in concrete without the supply of coolant. Such a drilling tool has an increased service life, however, with a decrease in cutting ability, it cannot be restored.

A rosette crown with a diamond working part has a set of advantages:

• increased cutting ability, which allows cutting reinforcing rods;
• reduced noise level, as well as the absence of dust during use wet method concrete processing;
• increased coefficient useful action, as well as increased, in comparison with victorious soldering, service life.

Due to the advantages, diamond tools are used when performing work in both industrial scale, and when performing repairs by private owners.

Diamond crown for concrete and porcelain stoneware PAZ 67 mm

The following benefits should also be noted.:

• structure preservation building structures in the cutting zone;
• the possibility of restoring wet-type nozzles.

The only drawback of a diamond crown for rosettes is the increased cost. To keep the tool in working condition, certain skills are required to perform the work.

Tungsten carbide socket bit in concrete

Strength characteristics, structure and manufacturing technology of the cutting edge allow processing various materials:

• concrete without steel reinforcement;
• brickwork;
• ceramic tiles.

Features of the universal tool:

• no need to change nozzles for processing various building materials. This allows you to speed up the drilling work;
• increased surface cleanliness of the formed cavity in the contact zone of the cutter with the material. There are no bumps or chips.

However, there is one significant drawback - the failure of an expensive cutter in contact with steel reinforcement. Besides, effective work tool is provided at an increased rotation speed and increased power of the electric drill. A tungsten carbide bit for concrete cannot be considered universal tool, since it cannot be used to process all kinds of building materials.

Tungsten carbide socket bit

Victory crown for rosettes

This type of tool is widely used when performing work by private craftsmen and home craftsmen. The cutting edge is formed from carbide material, which is used as a win or its analogues. The tool can be used with electric drill or perforator. The strength of the socket bit in concrete allows it to be used in impact mode.

The main advantages of the Pobedit cutter:

• low tool price;
• long service life;
• extended range of sizes.

Along with the advantages, there are a number of disadvantages:

• the difficulty of restoring victorious solderings;
• breakage of the working part of the tool during the processing of reinforced concrete.

Carbide crowns for concrete have different sizes - from 3.5 cm to 12 cm, which allows them to be used for various construction works.

Crown for sockets on concrete - diameter of nozzles

Victory crown for rosettes

When deciding which socket diameter is better to use, you need to know the size of the glass body for installing a switch or socket. The specified size is standardized and is 6.8 cm in diameter with a cavity depth of up to 4.5 cm. For convenience electrical work it is desirable to use a cutter having a diameter of the working part increased by several millimeters. A head with a diameter of 7–7.4 cm will do. The reduced diameter of the working part will not allow you to install a glass holder in a drilled cavity and fix it on plaster or alabaster.

Which crown to drill for a socket - criteria for choosing a tool

It is necessary to take a responsible approach to the issue of choosing a cutting tool for creating technological channels in concrete and other building materials.

The following points must be considered:

• socket crown diameter;
• the number of formed cavities;
• the amount of costs for the purchase of crowns for sockets;
• strength characteristics of the processed building material;
• Availability steel reinforcement in a concrete block.

When deciding on the choice of instrument, it is necessary to analyze all factors. When performing one-time work, there is no need to purchase expensive diamond cutters. To solve this problem, you can buy a cheap carbide cutter. For industrial use it is advisable to buy an expensive diamond crown with an increased service life. When buying, you should also take into account the reviews of the operators, as well as the rating of the manufacturer.

Crowns for concrete sockets

How to drill cavities using a concrete diamond drill bit for rosettes

Prior to the start of the drilling event, the required size of the bit for the socket in concrete should be selected and assembled.

Assembly operations include the following operations:

1. Fixing the guide drill with a bolt.
2. Fastening the cutting bowl to the shaft thread.
3. Checking the strength of the assembly and the absence of backlash.

When creating a cavity using an assembled crown, follow these steps:

1. Make a markup and mark the location coordinates future outlet or switch.
2. Drill conventional drill hole in the center of the cavity.
3. Fix the assembled bit in the power tool chuck and insert the center drill into the drilled channel.
4. Turn on the electric drill or hammer drill and, with a little effort, drill a hole for installing the socket.

When performing work in without fail it is necessary to use personal protective equipment - goggles and a respirator. After drilling, remove the drilled part and allow the equipment to cool.

How to make a hole using a concrete socket drill bit

Not always the strength of the material makes it easy to make holes with a crown. In this case, you can use a drill.

When performing work, follow the sequence of actions:

1. Determine the center of the cavity, drill a hole.
2. Drill a group of holes around the perimeter of the channel with a minimum gap between them.
3. Clamp the cutter in the punch chuck and make a hole along the previously prepared contour.

Unlike the first option, the edges of the resulting cavity will not have increased surface cleanliness.

Conclusion

In preparation for electrical work, you can speed up the drilling of holes using a diamond tool. You should choose the right size of the crown for the socket boxes, as well as learn how to drill. The design of crowns for a socket guarantees increased surface cleanliness, efficiency and quality of work performed.