Bulgarian - angular grinder( USM), is a power tool, designed for cutting metal and stone, for grinding and grinding surfaces. Despite the fact that the Bulgarian can not be called an instrument for daily use, in some cases, it is simply unrealistic to do without it.
There are many varieties of USM.Among them there are Bulgarians on batteries, connected to the power grid, as well as Bulgarians of various sizes, equipped with all sorts of functions. True, all these parameters depend on the cost of this power tool. In this article, we will tell you how to choose the Bulgarian for the house correctly?
What are the Bulgars - types
If the cutting is carried out only in the home, then the angle grinder should be small in size, with a small capacity. True, professionals such Bulgarians will not use, tk.these models are not very productive, and there are not so many useful functions in them.
If the Bulgarian is to be used in a continuous cutting cycle, then here it is better to choose professional USM.Their main difference from non-professional Bulgarians is that they can work without interruption for an hour in a row. But they have one big disadvantage, which is that they are heavy and big. And if such a power tool breaks, then it will be much more expensive to repair it than household Bulgarians.
All Bulgarians are distinguished by one-handed and two-handed. In order that you would be more clear which Bulgarian is better: one-handed or two-handed, let's compare them:
- One-handed Bulgarians have a power that rarely exceeds 1.5 kW.Typically, such an electric tool is convenient to use as a grinding or cutting. As for the circles for such USMs, they should not be more than 150 mm.
- Two-handed. The power of such an electric tool lies in the range of 2-2.5 kW.Dimensions of discs on a bulgarian of this type are in the range from 180 to 230 mm in diameter. These discs perfectly cut brick, concrete, hardened steel.
Technical characteristics
What are the discs for the Bulgarian
The diameter of the discs for the Bulgarian can be different. Which one to choose depends on the Bulgarians themselves and on the type of work ahead. If we talk about the size of the disks for the USM, they can be: 115, 125, 150, 180, 230 mm. The larger the disk size, the greater the mass of the ears. But such a disk can do a lot.
What is the power of
One of the main parameters can be attributed the power of this power tool. The higher this parameter, the higher the productivity of the grinder. The average power range of the EWM ranges from 500 W to 2.7 kW."Household" will not be bad to show itself in the work in the event that it will have a power within 0,8-1 kW.If there is a cutting of concrete, or similar in hardness of materials, it is best to buy a model with a capacity of 1.5-1.7 kW.
What is the rotational speed of the
disk This parameter indicates how many revolutions per minute the tool spindle makes. Modern Bulgarians can develop a speed of rotation in the range of 2800 - 11000 rpm. If the disk is of small diameter, then its rotation speed is large and can reach 11,000 rpm. Large disks have a lower rotational speed, which usually lies in the range of 6600 rpm. If, for some reason, the rotation speed is higher than the permissible norms, this can lead to the destruction of the disk. The
of the more expensive price category is equipped with disk speed controllers, depending on which disc is mounted on the spindle.
What functions can be equipped with
? The functions of Bulgarians vary and depend on the cost of the instrument. In order to make it easier for you to choose a quality Bulgarian for your home, let's consider the functions of this power tool.
- Soft start. This function allows you to gain momentum smoothly. Those.in this case there is no sharp jump in the speed dial, which gradually destroys the instrument.
- Ability to adjust the speed. This function allows you to choose the most optimal number of turns when cutting various materials, which generally leads to savings in consumables and electricity.
- Maintain a constant speed. Very important function. It becomes especially noticeable in the case of laborious work.
- Anti-jam function. If the disk becomes jammed, the power tool will automatically de-energize.
- Protection against secondary starting. It is necessary when power is cut off, when the tool is simply forgotten to be turned off. In this case, repeatedly until the "Start" button is pressed, the echo can not be turned on.
- Vibration damping during operation. It will be especially useful for powerful professional ears. In this case, the comfort of work is enhanced.
- Adjusting the grip position will be very useful for those people who are considered left-handed. Also, this function increases the use of power tools.
- The ability to quickly change the disc. If the discs are changed frequently, then there is no need to tighten the lock nut.
Ease of use and weight of the
power tool Bulgaria is a hand tool. Therefore, when choosing it, it is desirable to pay special attention to the convenience of using it.
In this case, priority should be given to the convenience of the handle on the body of the EWM.After all, the correctness of cutting material depends on its location. In addition, the correctly installed handle takes on the "lion's share" of vibration during the operation of the ears. That is why serious producers of Bulgarians make such pens anti-vibration.
If we talk about the mass of the Bulgarian, it is directly related to the power of the power tool. On average, the USM with a power of 0.7-0.8 kW weighs about 1.5-2 kg."Kilowatt" Bulgarians have a weight of already 2-2.3 kg. A USM capacity of more than 1.5 kW weighs 3.5 kg.
What nozzles( disks) are equipped with Bulgarian
With the help of a nozzle, you can not only cut material, but also grind, polish and clean it. In principle, the list of works in this plan is very decent, therefore for each of these types of work there are also their attachments:
- Velcro disks. These discs allow you to polish wood, stone, etc. The base of the nozzle is a platform, with a diameter of 125, 150, 180 mm. On it with the help of "Velcro" fastened various disks: emery, polishing, etc. Fine polishing is carried out with the help of discs made of sheep's wool.
- Petal circles. Wooden surfaces are very convenient to grind with the help of such circles. Such a disk has several layers of sandpaper, superimposed on each other along the entire circumference. One such circle is capable of processing up to 10 square meters.m surface of wood.
- Wire nozzles - crampons. Designed for cleaning metal from rust, from old paint. They are cup and disc.
- Diamond wheels for grinding. They are used for polishing marble, granite. These nozzles are usually used in those firms in which monuments are made. It is desirable to use such attachments on that Bulgarian, which is equipped with a speed regulator.
