Bulgarian - angle grinder electric tool with which you can cut metal, corner, stone, slate.
It is possible to grind welds or clean rusty formations from the surface.
This power tool allows you to clean wooden surfaces and cut ceramic products.
Let's figure out why angle grinders were called that, why they use it, what is the difference between one model of an angle grinder and another, depending on the class?
First you need to figure out why a grinder is called a grinder. The grinder is an angle grinder (angle grinder), which is used for cutting both wood and stone, and for grinding various surfaces. The name "Bulgarian" appeared in 1970 in the USSR. Then the Bulgarian factory, which still makes angle grinders, produced the first samples of the tool. The “homeland” of the instrument is Bulgaria, which is why it is called that. People appreciated the “assistant”, since then the name “Bulgarian” has been assigned to a useful tool and has come down to our times. Despite the cute name, the angle grinder - grinder - has a very tough, but true character!
Angle grinders (angle grinders) offered on the market have many differences. What is the difference between one model of an angle grinder and another? This tool can be divided by scope into economic and industrial class.
For example, if the classes are interchanged, then it will be very difficult to use an industrial angle grinder on the farm due to the weight, dimensions and power, you need to use another one.
As for the industry, a light small angle grinder will be of little use there, because it simply cannot perform many difficult operations due to its lightness, low power and limited functionality.
To select a universal electric tool, you need to decide on the type of planned work. If they are large enough, then a tool at a low price and with a small list of functions will not fit unambiguously.
The purpose of the grinder in industry depends on its class, the difference between which is as follows:
Inexpensive grinder with limited equipment of important parts and fixtures. Some models of this class do not have sufficient reliability and safety. The tool is well suited for rare and short-term work.
The case of an angle grinder - a grinder - can withstand minor loads. The mount, although quite strong, but this can not always guarantee ease of use.
What is it for? The tool is good for household work, but it should be borne in mind that the engine is not equipped with dust protection, during operation, small particles will get inside and accelerate the wear of moving parts. This will result in the need for tool repair. Dust of a metallic nature leads to a short circuit.
For repair and construction work, a more expensive and reliable angle grinder with high quality characteristics is used.
Equipment of this type is quite convenient and safe to use.
It has sealing inserts and engine paintwork, which prevents dirt from penetrating inside the tool. Angle grinders (angle grinders) are designed for domestic conditions, have a clamping mechanism, providing quick adjustment of the position of the protection casing.
The tool is equipped with convenient start buttons that even respond to pressing with a finger in a rubber sleeve. The ability to screw the handle on either side makes the use of such a tool convenient not only for right-handers, but also for left-handers.
So that the tool can be used comfortably, certain models of angle grinders support the installation of the handle from above.
Professional gradeA professional tool very rarely requires repair of an angle grinder - a grinder. The mechanisms are protected from dust exposure, and the tool itself is equipped with a soft start function, which allows you to gradually increase the speed of rotation and operation of the disk.
The grinder can be connected to a lower power circuit.
A tool of this class is equipped with vibration protection due to the productive auto-balance system of the working disk.
An angle grinder needs to be chosen, paying attention to several criteria.
First: scope.
Second: the number of pens.
Third: the elements of the equipment must be rubberized.
Bulgarians have different sizes and diameters of circles. The minimum size is equal to 115 mm. This circle is designed for simpler work. The largest size is considered to be a diameter of 230 mm. With the help of such a circle, it is possible to cut bricks, slabs, pipes and everything you need. The optimal choice of a circle for homework will be considered a diameter of 125 mm. To repair a house or apartment, you need to choose a circle equal to 180 mm. The power of the tool varies from 0.5 to 2.5 kW.
The choice of this parameter depends on the duration of operation and the power of the motor. There must be enough engine power to spin the disk.
Among the many additional options, it is necessary to note the soft start function. The system allows the tool to start without jerks, smoothing out power surges that occur in the mains.
You should pay attention to the presence of auto-balancing of the disk. The option is useful in cases where the discs wear out unevenly.
Vibration is smoothed and reduced. An angle grinder with a higher power must be protected from jamming. This function avoids the negative situation and consequences in which the electric motor can turn off automatically.
Do not forget that long-term and frequent overloads can be the cause of breakdown and failure of the electrical appliance. When carrying out work, it is required to periodically make stops, which, in turn, will help not only to eliminate and prevent overheating, but also save the user from carrying out unscheduled repairs. Repairs can often be very expensive.
To purchase high-quality equipment, you need to ask the seller for a certificate of quality for the device you are purchasing. Maintenance of the tool during the entire warranty period of use will be important. Manufacturers who are not indifferent to the reputation of their company give a very long warranty on their own product, which will protect the buyer from purchasing low-quality and defective equipment.
Users who choose a tool on the principle of price-quality note many positive aspects of the grinder, a good service life.
If you follow all the rules, safety precautions, working conditions, the equipment can serve faithfully for quite a long time. In the event of a breakdown after proper use of the instrument, repairs can be much cheaper than the cost of repairs if the instrument is used incorrectly in unsuitable conditions or used for other purposes.
On the page we answer most of the questions regarding the grinder
The correct name is an angle grinder (angle grinder). Or a little abbreviated - angle grinder. There are various types of grinders: angle grinders, vertical grinders, straight grinders, eccentric grinders, belt grinders.
The word Bulgarian first appeared in folk slang in the 70s of the last century in the USSR, when Bulgaria began to supply its first tools - angle grinders manufactured at the Sparky Eltos enterprise in the city of Lovech. To call a tool in everyday life or in production is an angle grinder for a long time, because people have shortened this name to a short and capacious one - a grinder, according to the country of production of the tool. And so the name of the angle grinder was fixed in everyday life - a grinder.
The word Bulgarian has taken root in colloquial speech since the times of the USSR and is still used in the CIS. So on the Russian-language Internet, the word grinder is used in the search 320,000 times, and the word angle grinder is only 10,000. In Bulgaria, at that time, the grinder was called flex, since the first angle grinders among the capitalists were produced by FLEX-Elektrowerkzeuge GmbH. You will be surprised by the spelling of a grinder - an angle grinder in Bulgarian - ggloshlaifi (Ъgl - angle). In English, an angle grinder is written - angle grinder, in German - winkelschleifer.
It is curious to observe the reaction of the Bulgarians when, for example, they read the following text from the instructions for working with the grinder: It is forbidden to work with the grinder in an unhealthy state, illness and under the influence of alcohol and drugs. When working with a grinder, it is forbidden to wear jewelry that the grinder can wind around herself. In the text, we associate a grinder with a tool, and Bulgarians with a woman. Accordingly, they are puzzled by the instructions: You need to use the grinder in a stable position with personal protective equipment .... it is forbidden to use it if it makes extraneous noise ..... in those places where the grinder is used there should be fewer people .... the handle of the grinder is made of vibration material...etc. Or a search query "cheap to buy an angle grinder."
In Russia, not only the angle grinder is named after the country - Bulgarian, but also, for example, there is a haircut - Canadian, stove - Dutch, knife - Finnish, flu - Spanish, dance - Polka ... Abroad, similarly, there is Russian roulette, roller coaster .
The grinder is one of the most popular power tools used in construction, car services, and everyday life. It applies:
Angle grinder often includes:
It is necessary to work in a stable position while firmly holding the grinder. The power cord should be out of the way, it is better to fix the metal being cut in a stationary state. Make sure that when cutting the metal, the circle does not pinch. It is necessary to cut so that the direction of rotation of the circle coincides with the direction of the cut. The protective cover was pointed at the worker.
The angle grinder was invented in Germany in 1954 by Ackermann + Schmitt (FLEX-Elektrowerkzeuge GmbH). The company was founded by Hermann Ackermann and Hermann Schmitt in 1922 in Stuttgart-Bad Cannstatt. They first invented the MS 6 hand sander with a flexible shaft (flexen). And then the world saw the first DL 9 angle grinder.
Brief history of SPARKY ELTOS AD, Lovech, Bulgaria
This page answered only a small part of the questions about the grinder. In the future, we will try to highlight other questions: Which Bulgarian company is the most reliable? Which angle grinder is better to buy for home? How to choose a Bulgarian? other.
Angle grinder is an electromechanical tool designed for cutting, grinding and cleaning parts made of stone and metal alloys. It is applied during both construction works, and works on metalworking. Another name, grinder, was born in the 70s, when the first representatives of this type of instruments appeared, produced in Bulgaria. The term angle grinder is traditionally also applied to grinders without angle gears.
The body is shaped like a cylinder, often with a side handle near the attachment point. Inside the angle grinder contains a universal collector motor (UKD) or a traction converter (for modern angle grinders), a start switch, an angular gear and an electric motor. Some models are equipped with a speed controller.
As attachments, special disks (circles) and brushes are used, which are threaded onto the angle grinder spindle. Usually the spindle has an external thread M14. The brushes have an internal thread and are mounted directly on the spindle. Wheels have a through hole only and require a flange and clamp nut for fastening. For reliable fastening, it is necessary to tighten the threaded fastener with considerable force. In this case, it is necessary to block the spindle from rotation. To do this, either two flat recesses are made on the spindle, on which a wrench can be placed, or a special locking mechanism is added to the angle grinder body. Typically, such a mechanism is a rod pressed by a spring. When you press the button on the angle grinder housing, the rod extends and enters the groove on the spindle. In this case, the key is not required, but such a mechanism sometimes jams when working in dusty environments, as a result, the rod does not return to its original position. It must be remembered that when the machine is running, the fastening nut is self-tightening. If the nut is loosened further, the spindle lock mechanism can be damaged, so it is necessary to use a thick paper gasket between the clamping nut and the metal flange of the cutting wheel. In Soviet times, such cushion mugs were included with the machine. Please note that the metal flange on the wheel must be installed to the clamping nut.
One of the applications of angle grinders is the polishing of various surfaces using pile discs with polishing paste. Sometimes, (usually for reasons of explosion safety) an air-driven angle grinder is used, since collector motors spark during operation. Polishing work is usually associated with painting and paint thinners, which creates the prerequisites for a volumetric explosion.
Injury caused by an angle grinder
The disk rotation speed of this machine is 6000 - 15000 rpm; when working with such a machine, the following rules should be observed:
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Angle grinder (angle grinder), open grinder - a power tool, one of the varieties of grinders designed for cutting, grinding and cleaning products made of stone, metal and other materials. Used in construction and metalworking.
The body is shaped like a cylinder, often with a side handle near the attachment point. Inside the angle grinder contains a universal collector motor (UKD), a starting switch or a traction converter (in modern angle grinders), an angular gear and an electric motor. Some models are equipped with a speed controller.
As attachments, special disks (circles) and brushes are used, which are threaded onto the angle grinder spindle. Usually the spindle has an external thread M14. The brushes have an internal thread and are mounted directly on the spindle. Wheels have a through hole only and require a flange and clamp nut for fastening.
There are wheels for processing various materials, including steels, aluminum alloys, stone, ceramic tiles, etc. Usually, the composition of the wheel allows it to be used only for certain materials.
Brushes are designed to clean surfaces from dirt, such as rust and paint. The brush bristles are made of steel or brass. Brass brushes are softer and wear faster, but they do not spark or scratch steel surfaces.
The colloquial name of this tool is "Bulgarian". It originated in the USSR in the 1970s, when the first samples of this type of instrument appeared in it, produced precisely in Bulgaria, since there were practically no products from capitalist countries in the Soviet Union. [Source not specified 92 days]
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Bulgarian is an angle grinder, which is a universal tool. It will not be superfluous in any household, because when carrying out repair and construction work, you constantly have to grind, clean or cut something. Therefore, every owner should buy this tool, but before that it is important to decide what characteristics the equipment should have. Decide for yourself what list of operations you have to perform, you should not purchase a tool that performs much more manipulations than you need, as in this case you will overpay. Bulgarian - this is the tool with which you can cut slate, metal corner and stone. With it, you can grind the weld or get rid of rust from the surface. Using this tool, the master can cut ceramic products or clean wooden surfaces. To do this, it will only be necessary to change the nozzles.
Before purchasing the tool described above, you need to decide what materials you will most often use, what depth of cut should be provided during the work, whether you want to repair grinders during operation. Before purchasing, you need to pay attention to the weight of the tool, since professional equipment, as a rule, has a significant mass and is unlikely to be convenient for use in everyday life. After analyzing all the functions of the tool, you can choose an adequate model for yourself.
If you need a wood grinder, then you can choose economy class equipment. It will cost within 1400 rubles, however, for such a price you will become the owner of a tool that does not have many important details and fixtures. Some models of this class do not provide adequate reliability and safety. If you use the tool quite rarely, as well as for a short time, then this model is suitable for you. Its body is made of thin steel, but it will be able to endure minor loads. Fastening with such a tool is carried out using a clamp with a nut and a tightening screw. It is strong enough, but it does not always guarantee convenience in operation, since it will be necessary to use a screwdriver and a suitable wrench. The tool is suitable for household use, but the engine is not protected from dust, as a result of which small particles of the elements to be worked with will contribute to abrasive wear of moving surfaces, and repair of grinders may be required. Metal dust can cause a short circuit.
If you are doing construction and repair work on a commercial basis, then it is recommended to purchase a more expensive and reliable model that will be of better quality.
Bulgarian, the price of which is 3,500 rubles, belongs to the instruments of the middle class. Such equipment is considered convenient and safe. It has sealing inserts and a lacquered rotor, which prevents the penetration of contaminants. Such machines are intended for use in domestic conditions, they are equipped with a clamping mechanism, which provides a quick adjustment of the position of the protective cover. Such tools have convenient start buttons and respond to finger pressure in a rubber glove. Such an angle grinder, reviews of which are quite often positive, has a more impressive set of functions. It can be used by a left-handed or right-handed owner, since the handle can be screwed on one of the two sides. For convenience, some models of this class allow you to install the handle from above.
Repair grinder, most likely, will not come in handy if you purchase a professional tool. The mechanism of such equipment is protected from dust, and has a soft start function. This guarantees a gradual increase in the speed of the disk. That is why such a tool can be connected even to a weak electrical network. Tools of this class are protected from vibration, manufacturers install an automatic balancing system for a working disk on them. The cost of such equipment can start from 4000 rubles, and the final threshold is very impressive.
Bulgarian - this is the tool that should be chosen according to several criteria. The first one is the area of use. The second thing to pay attention to is the number of handles. For domestic use, their number may be limited to one unit. However, if you choose professional equipment, then there should be two handles. Among other things, these components of the equipment must be rubberized.
Circles for grinders can have different diameters. The minimum size is 115 mm. It can be used to carry out the most simple work. The largest disc dimensions are 230 mm. With it, it will be possible to cut bricks, pipes, slabs, as well as everything that is needed. If you choose circles for a grinder that will be used at home, then 125 millimeters should be preferred as the optimal diameter. If an apartment or house is being repaired, then a 180 mm disc should be chosen. The power of the equipment can vary from 0.5 to 2.5 kW. The choice of this parameter depends on the duration of the motor operation - the motor power should be sufficient to spin the disc.
Bulgarian is the tool that sometimes has to be used for a long time. That is why it is important to take into account the presence of additional functions, among them we can highlight the option of a smooth start. Such a system will allow the equipment to start without jerks, this will smooth out power surges that occur in the network. You can also pay attention to the presence of automatic balancing of the disk. This feature will be useful in case of uneven wear. The system smooths unevenness and reduces vibration. If you purchase a grinder of sufficiently high power, then it must have an anti-jamming function. This option will prevent negative consequences in which the engine can turn off automatically. It is important that the use of such a tool is safe. To do this, the equipment is equipped with restart protection. If the current supply was stopped, and then resumed again, the angle grinder should not start working on its own. Pay attention to the fact that the grinder has the protection of the motor from the penetration of all kinds of particles and dust.
When working with this electric tool, one should not forget that long-term and frequent overloads can cause the machine to fail. Therefore, when carrying out work, it is imperative to make periodic stops of the equipment motor, which will not only prevent possible overheating, but also eliminate the need for repairs. By the way, it can be very expensive. If you want to become the owner of high-quality equipment, no matter what class it belongs to, it is important to ask the seller if the tool has a quality certificate. In addition, it is necessary to take care of the warranty, as well as maintenance during the entire period of operation. Those manufacturers who are worried about their reputation give a fairly long warranty on their product, which protects the buyer from purchasing low-quality equipment.
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When finishing work without this tool can not do. So - what is a Bulgarian? This is an angle grinder that makes polishing and sanding any surface easy.
The body of the angle grinder (usually cylindrical) is made of impact-resistant plastic. The key elements of the tool are the motor and gearbox. The electric motor is hidden in the body of the angle grinder, it “starts” the drive gear of the gearbox, which rotates the larger “driven” gear, on the axis of which the working disk of the tool is attached. The task of the gearbox is to reduce the number of revolutions of the disk. A powerful motor can “give out” more revolutions than is required for high-quality material processing - for example, modern collector motors accelerate to 30,000 revolutions per minute, and the average rotation speed of the tool nozzle is only 10,000 revolutions.
In the photo, views of the grinder
The use of the grinder depends on which nozzle is installed. You can use the tool for polishing, grinding, processing metal and concrete (in this case, you will need abrasive and diamond wheels).
A grinder with a cutting disc (a nozzle designed not for grinding, but for cutting materials) works on brick and tile, protects metal surfaces from rust and processes seams after welding.
Note!
A wire brush tool can remove paint or corrosion from metal surfaces.
Which angle grinder is better depends on the amount of work that is planned to be performed with its help.
In the photo Bulgarian
Conventionally, tools of this type are divided into household and professional - the latter are more powerful. Household models are not able to work for a long time without interruption - they need to be stopped every 15-20 minutes and "allowed to cool" for the same period of time. The set of functions of household grinders is simpler than in professional tools.
According to the format, two-handed and one-handed instruments are distinguished. Both types can be equipped with a detachable handle. The additional handle can be rearranged to hold the grinder as comfortably as possible. The handles are usually made of a material that absorbs vibration.
There are low-power (700-900W), medium and powerful grinders (from 900W to 1500W and over 1500W, respectively). The power of the grinder affects the maximum allowable size of the working disk - the more power, the larger the disk can be put on the grinder and the larger the surface that can be processed with the tool in one go.
Types of discs differ in diameter and material. For low-power and medium-sized tools, discs with a diameter of 100-150 mm are used, for powerful ones, discs with a diameter of 180-230 mm are suitable.
Discs for grinders can be grinding and cutting. Grinding discs are made wider and thicker so that the nozzle can cope with the load.
Note!
Diamond cutting discs are used to work with materials other than metal - granite, tile or ceramics.
To work with small planes, cup grinding wheels are used. With their help, plastic is cleaned, thick layers of paint are removed, and panels are adjusted. Polishing pads are used to work with a large number of materials - they are suitable for processing wood, plastic, stone and metal.
An ordinary grinder
Choose a tool depending on how often and for what amount of work it will be used. Household grinders can work about 20 hours a month. If the need for a tool arises often, for "home" use it is worth taking either a household model of maximum power, or a professional one - minimum.
When buying, they check the serviceability and quality of the grinder. The noise of the included tool should be uniform. If a burning smell appears during operation, you should choose another model. Case parts made of plastic are also checked: they must be intact, smooth, and of high quality.
Additional characteristics are determined depending on what work will be performed by the grinder. If the grinder is taken to work with stone or concrete, it is important that the body is protected from dust and material particles that form during operation. For working on metal, a model with a small number of revolutions is suitable; for processing stone, a larger number of them will be required.
Which is a versatile tool. It will not be superfluous in any household, because when carrying out repair and construction work, you constantly have to grind, clean or cut something. Therefore, every owner should buy this tool, but before that it is important to decide what characteristics the equipment should have. Decide for yourself what list of operations you have to perform, you should not purchase a tool that performs much more manipulations than you need, as in this case you will overpay. Bulgarian - this is the tool with which you can cut slate, metal corner and stone. With it, you can grind the weld or get rid of rust from the surface. Using this tool, the master can cut ceramic products or clean wooden surfaces. To do this, it will only be necessary to change the nozzles.
Before purchasing the tool described above, you need to decide what materials you will most often use, what depth of cut should be provided during the work, whether you want to repair grinders during operation. Before purchasing, you need to pay attention to the weight of the tool, since professional equipment, as a rule, has a significant mass and is unlikely to be convenient for use in everyday life. After analyzing all the functions of the tool, you can choose an adequate model for yourself.
If you need a wood grinder, then you can choose economy class equipment. It will cost within 1400 rubles, however, for such a price you will become the owner of a tool that does not have many important details and fixtures. Some models of this class do not provide adequate reliability and safety. If you use the tool quite rarely, as well as for a short time, then this model is suitable for you. Its body is made of thin steel, but it will be able to endure minor loads. Fastening with such a tool is carried out using a clamp with a nut and a tightening screw. It is strong enough, but it does not always guarantee convenience in operation, since it will be necessary to use a screwdriver and a suitable wrench. The tool is suitable for household use, but the engine is not protected from dust, as a result of which small particles of the elements to be worked with will contribute to abrasive wear of moving surfaces, and repair of grinders may be required. Metal dust can cause a short circuit.
If you are doing construction and repair work on a commercial basis, then it is recommended to purchase a more expensive and reliable model that will be of better quality.
Bulgarian, the price of which is 3,500 rubles, belongs to the instruments of the middle class. Such equipment is considered convenient and safe. It has sealing inserts and a lacquered rotor, which prevents the penetration of contaminants. Such machines are intended for use in domestic conditions, they are equipped with a clamping mechanism, which provides a quick adjustment of the position of the protective cover. Such tools have convenient start buttons and respond to finger pressure in a rubber glove. Such an angle grinder, reviews of which are quite often positive, has a more impressive set of functions. It can be used by a left-handed or right-handed owner, since the handle can be screwed on one of the two sides. For convenience, some models of this class allow you to install the handle from above.
Repair grinder, most likely, will not come in handy if you purchase a professional tool. The mechanism of such equipment is protected from dust, and has a soft start function. This guarantees a gradual increase in the speed of the disk. That is why such a tool can be connected even to a weak electrical network. Tools of this class are protected from vibration, manufacturers install an automatic balancing system for a working disk on them. The cost of such equipment can start from 4000 rubles, and the final threshold is very impressive.
Bulgarian - this is the tool that should be chosen according to several criteria. The first one is the area of use. The second thing to pay attention to is the number of handles. For domestic use, their number may be limited to one unit. However, if you choose professional equipment, then there should be two handles. Among other things, these components of the equipment must be rubberized.
Circles for grinders can have different diameters. The minimum size is 115 mm. It can be used to carry out the most simple work. The largest disc dimensions are 230 mm. With it, it will be possible to cut bricks, pipes, slabs, as well as everything that is needed. If you choose circles for a grinder that will be used at home, then 125 millimeters should be preferred as the optimal diameter. If an apartment or house is being repaired, then a 180 mm disc should be chosen. The power of the equipment can vary from 0.5 to 2.5 kW. The choice of this parameter depends on the duration of the motor operation - the motor power should be sufficient to spin the disc.
Bulgarian is the tool that sometimes has to be used for a long time. That is why it is important to take into account the presence of additional functions, among them we can highlight the option of a smooth start. Such a system will allow the equipment to start without jerks, this will smooth out power surges that occur in the network. You can also pay attention to the presence of automatic balancing of the disk. This feature will be useful in case of uneven wear. The system smooths unevenness and reduces vibration. If you purchase a grinder of sufficiently high power, then it must have an anti-jamming function. This option will prevent negative consequences in which the engine can turn off automatically. It is important that the use of such a tool is safe. To do this, the equipment is equipped with restart protection. If the current supply was stopped, and then resumed again, the angle grinder should not start working on its own. Pay attention to the fact that the grinder has the protection of the motor from the penetration of all kinds of particles and dust.
When working with this electric tool, one should not forget that long-term and frequent overloads can cause the machine to fail. Therefore, when carrying out work, it is imperative to make periodic stops of the equipment motor, which will not only prevent possible overheating, but also eliminate the need for repairs. By the way, it can be very expensive. If you want to become the owner of high-quality equipment, no matter what class it belongs to, it is important to ask the seller if the tool has a quality certificate. In addition, it is necessary to take care of the warranty, as well as maintenance during the entire period of operation. Those manufacturers who are worried about their reputation give a fairly long warranty on their product, which protects the buyer from purchasing low-quality equipment.
Almost any man uses an electric tool as needed - to cut something, grind, drill. One of the most popular electrical mechanisms for performing various jobs is angle grinder (angle grinder).
An angle grinder in the common people is also called a grinder. To understand where this name came from, you need to dig a little into history.
In the Soviet Union, the word "Bulgarian" appeared in everyday life in the late sixties of the last century. At that time, far from us, the Bulgarians bought a license from Bosch for the production of angle grinders. Since the goods of the capitalist countries were not available in the USSR, this instrument of Bulgarian production appeared in the fatherland. At that time Bulgaria was a country of the socialist community, and we had well-established trade relations with this state. Therefore, in the USSR, first of all, angle grinders of this country appeared, hence the name. An instrument from Bulgaria began to be called a "grinder".
Angle grinder is a tool necessary for construction or repair work. It is convenient to use such a tool when the material needs to be cut, cleaned, polished. Of course, all these works can be done with the help of manual devices, but then you have to spend a lot of time.
"Bulgarian" is considered a fairly versatile tool, with it you can perform various work:
The scope of angle grinders is wide, it will be difficult to list all the work performed with its help at once.
Angle grinders are divided into two types according to their purpose: professional and household. Unlike household "grinders", professional machines can work in a more difficult mode, withstanding prolonged loads. True, such a tool costs more - better materials are used for its manufacture. The electric motor of a professional angle grinder is able to operate almost continuously for several hours without overheating.
Angle grinders vary in size. Large "grinders" allow you to use cutting wheels with a larger diameter, only a small disk can be installed on a small angle grinder. Each size of the angle grinder has its own advantages when carrying out certain work, and it will not always be convenient to use a large angle grinder. A large tool is convenient to use when you need:
Small "grinders" are convenient to perform various grinding and polishing work. First of all, the angle grinder was intended for this - it’s not for nothing that the name of the tool contains the word “grinding”.
The main characteristics determine in what capacity it is best to use an angle grinder. Can be distinguished:
Rotational speed important in professional life. With a low number of revolutions, it is impossible to carry out some work, or the processing will progress slowly. Some types of work need to be performed only at low disc speeds. Many inexpensive "grinders" have only one speed. As a rule, it is quite high (about 10-11 thousand rpm).
//www.youtube.com/watch?v=A_YXFt-h8Kc
Power modern angle grinders range from 500 to 2800 watts. Headroom doesn't hurt, and usually a professional tool is more powerful.
Weight and size are also of great importance for carrying out various works. It is not always convenient to use a large angle grinder, despite the high power of the tool. For example, when cleaning car body parts, it will be difficult to hold a bulky angle grinder for a long time, and in general it is inconvenient to use a large tool. And a small machine will not be able to make a deep cut, since it is impossible to install a large cutting disc in it.
Functionality important for complex work requiring special conditions. Additional functions of the SCMS include:
(circles) are defined by two main parameters:
There are five basic cut-off wheel diameters: 230, 180, 150, 125 and 115mm, but professional discs can be 300mm or larger. Accordingly, circles of a larger diameter are suitable for large angle grinders. More cutting discs have different thicknesses, and it can be from 1 to 4 mm.
Circles differ in their purpose - according to the type of material with which you will have to deal with when working. There are discs for metal, stone, wood, reinforced concrete. The circles themselves can be made of different materials and have different shapes.
For work at home, there is no need to buy a large grinder - just purchase a tool designed to install a cutting disc from 115 to 150 mm. Since, small-sized angle grinders do not have very high power, you should choose the most optimal model for this parameter. The best solution would be to purchase a machine with a consumption of 1000-1200 watts.
It is better to choose a tool model with a speed controller and a “soft” start - the angle grinder will start smoothly, and at different speeds it will be possible to process materials more efficiently. You should pay attention to the convenience of the handle. Not bad if the handle will have anti-vibration properties.
And another important factor is the choice of tool manufacturer. You should not buy an angle grinder of unknown origin - everyone knows that the miser pays twice. There are many popular brands that have proven themselves only on the positive side. It is unlikely that it will be a disappointment to buy an angle grinder from Metabo, Bosch, Makita. And, of course, you should not buy a hand-held and used tool.
