In arsenal, any home or professional wizard should have an electric door - an electric tool, the main task of which is a breakdown of holes in various solid materials. This breakdown is carried out by a special carbide drill, which is also called the "brown". The material being processed is destroyed as a result of a combined reciprocating and rotational effects of a carbide bora. What to pay attention to when choosing a hammer?
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The main characteristic is the power of the punch. The clear classification of power perforators does not exist, but it is generally accepted to consider the aggregates with a capacity of 450-900 watts by household, and perforators with a capacity of 900 watts to 2000 watts are professional. Therefore, you should choose, paying attention to the alleged volumes and types of work. If it is planned to hammer fat walls and regularly - a professional tool should be purchased. If the perforator is supposed to be used on occasion to the case, in everyday life - it is quite suitable and less powerful, and, consequently, a cheaper, household perforator.
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By type of engine placement in the case, the perforators are divided into horizontal and vertical. In the horizontal perforator, the engine is on one axis with a shock tool. All household perforators are horizontal and possess the advantage - they are very convenient to work in narrow openings. In the vertical perforator, sometimes called L-shaped, the engine is perpendicular to this axis. Features of this layout allow you to apply a more powerful engine and improve the cooling of the unit, which significantly increases the time of continuous operation.
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Another important parameter of the perforator is the impact force. This is the kinetic energy with which the shock tool is in contact with the treated surface. Measured in Joules (J). The impact force is directly proportional to the power of the perforator. For domestic use, a tool with a blow of 3-4 J, and for professional use, a perforator with a force of 15-20 j is needed. The higher the impact energy, the smaliar the time will be required to perform a specific scope of work.
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When choosing a perforator, pay attention to the presence of additional modes of operation. An ideal option will be an aggregate that allows the maximum to use possible use of the perforator. Those. Such a device that allows you to simply drill, drill with a blow (the main function of the perforator) and use it as a jackhammer. Purchase a perforator that supports all three possible modes of operation, will save from the need to keep an additionally drill in your tool set and a portable jackhammer.
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Perforators also differ by type of cartridge to install the shock tool. Currently there are SDS + and SDS MAX cartridges. In the SDS + cartridge, it is possible to install a bera with a diameter of no more than 15 mm. Accordingly, household perforators are equipped with this type of cartridge. In professional models, an SDS MAX cartridge is applied, which allows you to install boos 26 and more than millimeters.
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There are differences and in the speed of rotation and shocks of the working tool. For household perforators, it lies in the range of 250-2500 rpm and shock speeds from 2000 to 5,500 ° C. For standard domestic applications, the speed of 1000-1500 rpm is quite sufficient with a frequency of shocks of 4500 ° C / min.
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You should pay attention to the weight of the perforator. The convenience of working with the unit depends on this indicator. A good household perforator should not weigh more than 3-3.5 kg.
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The additional functions of the perforator include such pleasant little things as smooth adjustment of the spindle rotation speed, the presence of reversing the direction of rotation (facilitates the extraction of the jamble tool), the presence of an overtook coupling in the spindle drive (protects the engine and operator's hands when the tool is jammed), the anti-vibration system and the system "soft" »Start.
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Manufacturers of perforators great set. Those brands like Bosch, Metabo, Hitachi have proven perfectly. If you are a silent master, we recommend choosing from their model range. For example, Bosch GBH 8-45 DV for the third year in a row is considered the best professional puncher in the world. If the unit is assumed to be used by amateur purposes, on occasion to occasion, you can stay on budget models, such as Sturm RH-2551, Forte RH-26-9R or INTERTOOL DT-0181.
Well, in principle, and that's it. We hope that these brief recommendations will help you make the right choice.
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