Crown 68 mm in the concrete. How to choose and apply in work?

Anyone who has decided to change the wiring at home, in the office or in another room, is faced with the need to comfortably place sockets and switches. This requires a special tool - a crown of 68 mm for concrete. Its description deserves special attention.

Why do I need a crown?

A 68 mm crown for concrete is an integral tool in the electrician's kit. Its direct purpose is to drill holes for concrete and bricks for podzroetnikov and switches.

Creation of a hole using a device such as a 68 mm crown for concrete is much faster and safer than a tie-in with a bulgarian.

Tips for choosing and types of crowns

The choice of the crown depends on the material in which it is supposed to create the hole: what the wall is made of, and for how long it is necessary to use it. Also distinguish similar attachments for fastening to the perforator (trihedral, hexagon, SDS Max, and SDS Plus).

Basically, a 68 mm SDS concrete crown from proven, self-respecting manufacturers is available with a tail tag according to the standard, which is suitable for modern perforators. This tail has a length of 10 mm.

It is necessary to take into account that the crowns are divided into two types: shock and unstressed. Impact crowns for concrete are made of three alloys (winning and carbide-tungsten). In unstressed crowns, diamond deposition on cutting elements is applied.

Crowns for concrete come in different diameters - from 30 to 225 mm and above. The most demanded is the crown of 68 mm in concrete, which is ideal for switches and podrozetnikov. It is a diamond unstressed crown that can be used to cut a piece of wood in a tile without fear of damaging its surface.

Based on the type of base material, the following types of tools are selected:

1. Winning crown for concrete (price - about 500 rubles).
2. Crowns of carbide-tungsten alloys for concrete (the price is about 1000 rubles).
3. Diamond crown for concrete 68 mm (price - about 3000 rubles)

The cost varies depending on the country of origin. Chinese crowns for concrete can cost much less, and European - more expensive.

The most simple and cheap option are crowns with winning tips. Basically they are used not for permanent works. Such attachments, as a rule, wear out quickly and come to an unsuitable appearance.

Crowns made of carbide-tungsten alloys have high cutting characteristics, but are inferior to the quality and strength of the diamond crown. They are not recommended for professional use.

When a 68 mm diamond bit is applied to concrete, the work is characterized by greater reliability, namely:

• In the accuracy of drilling;
• Penetration depth;
• Universality for any materials;
• In a minimum level of vibration and noise;
• In speed and convenience.

The best option is the crowns, which are coated with diamond. Such crowns for concrete, regardless of the manufacturer, are longer and better serve. They are recommended to be used for a large amount of work.

Tips for using a crown for concrete

During the repair, redevelopment of apartments, offices or building construction, there is a need to create additional openings for rosette, ventilation, water supply, etc. The choice of crown depends on the diameter of the slot and the amount of work. For drilling reinforced concrete, the optimal method is drilling, in which a diamond crown is installed.

It is not recommended to save on quality, especially if a 68 mm crown is used for concrete. This tool is the most popular and in demand even in home repairs. Quality nozzle will be characterized by a long working life and will last a very long time.

All work on drilling holes can be divided into five stages: preparation, drilling, marking, installation and finishing.

To do the work yourself, you need materials such as building gypsum or plaster. From the main working tools should be prepared punch (or electric drill), crown for concrete, chisel, hammer, spatula. A ruler, a pencil, a level and a clerical knife can also be useful . Prepare a container for mixing the solution.

Reviews of manufacturers

The greatest preference for both experienced repairmen and home masters, give to such brands as REMS, Rothenberger, BOSH, CEDIMA, Dewalt. These brands are known for their excellent quality and long life.

Diamond crown for concrete 68 mm, the price of which is in the middle price segment, is produced by South Korean firm Arix and Chinese manufacturer Super HARD. According to feedback, the quality of these products is quite acceptable.

The Chinese company Werk is known among users as the cheapest product. But his quality wants the best. Slightly more expensive, but more durable products of domestic manufacturers DISTAR, "Adele".

Having familiarized with such an indispensable in repair tool, as a crown for concrete with a diameter of 68 mm, you can choose the most suitable type of tool for any conditions.