The grinder, which is also called the angle grinder (angle grinder), is a universal device. With this tool, you can perform different kinds processing, such as cutting, grinding, polishing, chasing, etc. The angle grinder is suitable for working with stone, metal, and wood blanks. The effectiveness of the device depends on the correct selection of the nozzle for the grinder. In order not to make a mistake when choosing desired product, you need to learn its types.
Processing of almost any material is carried out using angle grinders with a variety of nozzles
In today's market, you can find many varieties of circles for angle grinders. A huge number of modifications can confuse an inexperienced person. Each type of nozzle has its own operational features that determine the design of the product. Differentiation of such instruments occurs according to the following criteria:
- appointment;
- material of manufacture;
- size.
Today you can find many circles on the grinder, which are used for processing metal, wood or stone parts. The purpose of the product is determined by its labeling. It should be noted that some types of nozzles are universal. For example, a stone wheel is often used to cut ceramic tiles, concrete and brick products.
However, most discs are only suitable for highly specialized work. Nozzles for metal should never be used when cutting wooden logs or planks. And the circles that are used for roughing steel are not usually used for stainless steel.
Helpful information! Why is Bulgarian called Bulgarian? The answer to this question is very simple: in the USSR, the first samples of this device appeared in the 70s. They were delivered from Bulgaria, so this name was assigned to the device.
Angle grinders are used for cutting and grinding materials. If desired, you can choose a circle for processing glass, plastic or marble slabs. All tools for angle grinders are divided into types according to the class of processing, as well as the degree of rigidity.
Classification of nozzles on angle grinders depending on the type of work
Nozzles used for cutting various materials, can be used to perform a variety of operations. Each device has unique properties and design. Depending on the purpose of the nozzle are:
- cutting;
- saw;
- peeling;
- cleaning (grinding);
- for making seams;
- polishing.
Cut-off. Such circles are used when it is necessary to cut or cut the material (rough). Cutting nozzle for angle grinders has the shape of a disk equipped with a cutting edge. In some cases, such circles are equipped with a solid cutting part, and sometimes with a segmented one.
Saw. By name it is clear that such products are used for cutting various parts made of wood. The peculiarity of these nozzles is that their cutting part has teeth. Such discs are widely used for sawing wood, drywall, chipboard and fiberboard. With the help of a saw blade, you can make a smooth cut of ordinary and laminated boards. It is worth noting that the teeth of the saw blades for the angle grinder may differ in shape, which affects their operational purpose.
Peeling. Such nozzles are used for grinding metal, concrete and wood blanks. Using a similar disc, you can easily remove from the surface old layer paint or varnish. Grinding wheels are also used to remove primer. If necessary, these products are used for grinding.
Strippers. Cleaning nozzles are included in the peeling group. They are circles, the edges of which contain a metal wire. Cleaning discs are used to remove rust from metal surfaces, as well as for the elimination of other types of persistent pollution. Most often they are used to prepare pipes for painting.
One of the most common types of cleaning nozzles is the petal circle. This product is used for processing workpieces made of metal, wood and plastic. The petal circle is a disk, along the edges of which small pieces of sandpaper are fixed. Depending on the nature of the work, the grain size of the working components is selected. On the modern market, you can find varieties of petal disk:
- end;
- batch;
- having a mandrel.
A cleaning (grinding) nozzle for a grinder with a mandrel is used when it is necessary to ensure high accuracy. Many products belonging to this group are used to remove burrs after cutting metal and plastic pipes.
Helpful information! With the help of cleaning wheels, the finishing of welds is performed.
Stitching attachments are used to arrange stitches in stoneware, concrete, and asphalt pavement. Seam wheels are specially designed to perform this kind of work.
Polishing. These products are used for polishing surfaces. Most often they are used after grinding. This group includes the following types of discs: felt, felt, as well as an emery wheel. Velcro is used to fix them on the tool, so they are very easy to change.
Nozzles for grinder: classification by material
For the manufacture of nozzles that are used while working with angle grinders, various materials are used. All of them are highly efficient, and also made with safety in mind. For example, many metal wheels have special slots filled with copper to prevent the disc from overheating during operation. Consider what materials you can buy circles for angle grinders.
diamond circle. Similar products include two components. The first of these is a steel base, and the second is a diamond coating. Such discs are used for processing metal blanks, as well as products made of stone, concrete, ceramics and glass. The diamond wheel for the grinder is characterized by high efficiency and accuracy of work. With it, the thinnest cut of the workpiece is performed.
"Turtle". Such a nozzle also has a diamond coating, however, the base in this case is represented by flexible rubber, which is characterized by high strength. The disk got its name due to the corrugated structure. Diamond-coated circles are fixed to the base with Velcro.
Carbide disc. For the manufacture of such devices, metals are used, the alloy of which forms a strong connection. The edges of such circles contain solder, which includes high-carbon molybdenum steels. Also, the solder contains impurities of chromium and nickel, which increases the resistance of the product to adverse operational factors. Such discs are used for cutting metal (less often - wood).
The "turtle" nozzle has a corrugated structure, and the diamond-coated circles are fixed to the base with Velcro
Abrasive. Such a circle is made of latex paper, the main characteristics of which are density and resistance to moisture. Similar devices for angle grinders include a special reinforcing mesh in their structure. An abrasive layer is applied to such a base. Wheels of this type, used for grinding, may have a polymer base.
Cleanup. This disk includes a metal wire, with the help of which paint, varnish and heavy dirt are removed from the treated surface. The diameter of such a wire is selected depending on the nature of the work.
Note! Separately, it should be said that the nozzles used for angle grinders include support plates. Such products are made of polymeric materials or durable rubber. They are used in combination with some grinding and polishing tools.
Cutting devices for grinders: their features
Cutting a wide variety of materials is the most popular operation for which an angle grinder is used. A very important point necessary for this task is the competent selection of nozzles. The choice is made depending on what material will be processed. For example, for cutting metal, cutting wheels are used, for the production of which a crystalline mineral, corundum, is used.
All circles for the grinder are color-coded depending on their purpose. For example, for cutting metal objects, it is customary to use discs with blue markings. It is important to remember that cutting wheels are recommended to be installed on angle grinders with speed control.
Cutting products for metal processing are also differentiated by dimensions. The main geometric data of such nozzles include:
- outside diameter;
- thickness.
Metal cutting discs are available for three types of angle grinders: small, medium and large. The diameter of these products varies from 115 to 230 mm. Circles of 125 mm are very popular. Less common are products with a diameter of 150 and 80 mm.
The thickness of such devices ranges from 1 to 3.2 mm. Accordingly, large circles are made thicker in order to have sufficient rigidity. And for small nozzles, this indicator can be completely different.
Cut-off bits, which are used to work with stone and concrete, are made of a completely different material - silicon carbide. Such an abrasive ensures the efficiency of the angle grinder when cutting white brick, as well as slate. The most common type of grinder is angle grinder 125 (with speed control). This is due to the fact that it is the most functional and has a low weight.
Silicon carbide is not suitable for processing red bricks. In this case, it is customary to use circles with diamond coating applied to a metal base.
Related article:
Types of wood discs for angle grinders: sawing, cutting, peeling, grinding and polishing. Rules for using angle grinders for wood.
Similar products have green marking, allowing you to accurately select them for the grinder. Photos of silicon carbide products, as well as other types of discs, make it possible to visually appreciate their differences.
Note! Different discs are used to cut wood. This can be a chain circle, along the edges of which a chain from a chainsaw is installed, or a metal product with teeth (circular).
Experts recommend taking into account the technical characteristics of wood when choosing a nozzle for a grinder. Chain Saw best suited to work with wooden products. This material has a high viscosity coefficient, so it is the most difficult to process. Before starting work, it is recommended to study the safety rules and take the necessary precautions.
Peeling attachments for grinder: varieties
To remove paint and varnish materials and rust, special nozzles are used - peeling. This group includes several types of discs, which differ in the material of manufacture and characteristics. In order to remove a layer of paint from the pipe, metal brushes are used. Bulgarian is often used for such work. The brushes can be in the form of a bowl or a disk with coils of metal wire around the edges.
In order to select the required processing intensity, it is required to select the desired wire diameter. In this case, a certain pattern can be traced. For a rougher impact, nozzles with a larger diameter wire are used. Accordingly, thinner wire is used for gentle processing.
The design of the nozzles takes into account two options for placing the wire. In the first case, it is collected in bundles of various thicknesses, and in the second, it is located freely. Nozzles for a grinder for removing paint from metal products are very popular. It is worth noting that, in addition to brushes, there are other devices that belong to the peeling group, such as:
- diamond peeling nozzles;
- abrasive grinding wheels.
They have a lot in common. However, the location of the abrasive material in this case is different: it is located along the perimeter of the disk. Thus, the processing is done in a slightly different way. It is important to remember that diamond-coated roughing heads are not commonly used for metal workpieces. They are used to remove layers of stone, concrete and other similar materials.
In turn, abrasive grinding nozzles, which also belong to the category of peeling ones, are used when working with metal products. With these tools, you can perform rough processing of the workpiece. There are many uses for these products. Their design is excellent for grinding metal. Nozzles for a grinder of this type are used for processing welds, as well as for. The thickness of these products may be different, but it should not be less than 5 mm.
Helpful information! The universality of the angle grinder has influenced its wide distribution. Bulgarian is used in almost all areas of construction. This tool is used for cutting, grinding, polishing and other processing options for a wide variety of materials.
Grinding nozzles for grinder: rough and gentle processing
Grinding is one of the most popular processes for which angle grinders are used. With the help of such a tool and a set of nozzles, it is possible to carry out rough and gentle processing of metal, stone and wooden surfaces. As a rule, grinding precedes polishing of workpieces. The nozzles that are used in this case may consist of sandpaper or felt material.
The petal disk for the grinder was widely used. This tool consists of a circle (base), along the edges of which sandpaper petals are fixed. They may have different grain sizes. This indicator is selected depending on the nature of the work.
The use of a petal wheel allows for roughing workpieces from different materials. It can also be used for fine sanding. For finishing, fine-grained petals are used.
Today you can find another variety grinding discs to Bulgarian. Some abrasive products are fixed to the base with a special Velcro. To use such a circle, it is necessary to screw it onto the tool spindle.
Polishing is the softest wood treatment. For polishing jobs that are related to finishing stage turning this or that material, special felt discs are used. And also on the tool market you can find circles, the working part of which consists of a dense fabric. Nozzles for polishing grinders are very popular when working with wood, as their use allows you to bring the surface of the material to the smoothest possible state.
Nozzles on the grinder for rough processing of various materials
For rough grinding various surfaces special disks are used, which have their own characteristics. Rough processing of wood is aimed at eliminating knots, as well as a layer of bark. The use of such nozzles for metal blanks allows you to remove paint and rust.
Today, there are several types of nozzles for grinding on a grinder. For example, peeling discs are very popular. Among them there are products that are used for processing stone and concrete (diamond) and abrasive wheels used for metal parts.
Roughing products are often used to remove an old layer of paint. In some cases, they are used to remove varnish. Another common variant of the nozzle on the grinder is the brushes. The design features of these elements are reflected in their effectiveness. The disc, which has a metal wire, is able to quickly remove paint from a metal surface.
Note! In the building materials market, you can find end circles for angle grinders. Such products are used when it is necessary to align the cutting line of the board. Aligning the ends with an oblique cut is done quite often, so this tool can be called indispensable.
Separately, it should be said about the nozzles for polishing cars. For rough processing of a paint and varnish covering (LKP) machines apply special woolen disks. The material in such a circle can be located freely or twisted into dense threads.
Also, abrasive discs are used for rough processing of cars, which are distinguished by high functionality and a longer service life.
Today you can find other nozzles on the grinder for polishing cars. For example, felt and felt discs are very popular. For finishing Car paintwork uses vulcanite nozzles, the main material of which is rubber.
Nozzles for grinder for grinding: gentle treatment
For coarse grinding of certain materials, petal nozzles are used primarily. They, as mentioned above, consist of petals located close to each other and having an abrasive coating ( sandpaper).
The grain size of the petal nozzles can be different. It is selected depending on the nature of the work. It is worth noting that the design of this grinding nozzle allows it to serve for quite a long time, which is a definite plus. In shape, individual petals resemble a trapezoid.
The second type of nozzles, which are classified as soft, are grinding wheels. They are made of sandpaper, felt or dense fabrics. Discs of this type are fixed with Velcro on a plate basis. They are usually sold in a set.
For processing wood, a kit is used that includes 5 discs. They all duplicate each other. In case of wear of one circle, it will not be difficult to replace it with new nozzle. Similar products are used for finishing wooden surfaces. There are other nozzles on angle grinders that are used for grinding wood. For example, wood cutters for grinders are very popular.
Felt circles, as well as products that include in their design dense fabric used for wood processing. It is important to remember that for grinding with the help of such circles, it is necessary to use a special wax paste. It is applied to the surface of the part before starting work.
Another type of nozzles that is used for finishing wooden surfaces is cup products. They consist of nylon fibers, which together form a fairly dense coating.
What discs for grinding concrete and metal are used most often
For grinding concrete, two types of nozzles are used on angle grinders: diamond and abrasive. It is important to remember that its effectiveness depends on the diameter of the circle. The larger the disk, the more load it can carry.
Note! Disks of this type are actively used in the installation concrete screed. Its grinding can significantly improve the strength characteristics. At home, a grinder equipped with a special nozzle is enough to perform a similar operation.
Nozzles for a grinder for grinding concrete can be purchased on the market, in hardware store or place an order online. To date, there are two methods of grinding this material:
- dry;
- wet.
In the first case, the operation is performed using special disks. Dry grinding of concrete is highly efficient, but it also has some disadvantages. The main disadvantage is abundant dust formation. Before starting dry grinding, it is necessary to prime the surface, which will increase its strength.
Wet (or wet) grinding of concrete differs from the previous method in that it involves the use of water, and this avoids the formation of dust. This type of grinding is considered to be of higher quality, however, when using a grinder, it is not possible.
It is important to remember that grinding and polishing with a grinder are two completely different processes. When polishing, the surface of the material is processed until it is smooth. In turn, grinding is necessary to level the surface.
Grinding of metal products is carried out using special discs. They include the following materials: silicon carbide, electrocorundum, etc. And also in the composition of such circles there are special fiberglass meshes.
For grinding metal, various brushes are used, which consist of a wire located on a metal base. In addition, today you can purchase other, more technological nozzles for the grinder. The tape file is a direct confirmation of this. It is used for polishing, grinding and removing rust. It is worth noting that the angle grinder must have smooth speed control, which is necessary condition to use this nozzle.
Grinding discs for metal are used for the following operations: tool sharpening, fine finish welds, as well as cleaning the surface from rust and paint. When choosing nozzles for metal, you must first be guided by how much work you have to do.
Nozzles for a grinder for grinding wood: peculiarities
For sanding wood surfaces, petal and round nozzles are used. In the first case, sandpaper is fixed around the perimeter of the disc. In its turn, round discs provide fastening of emery circles on a flypaper. Both options for woodworking attachments are quite convenient. In some cases, such tools are equipped with a special adapter that allows you to use.
Helpful information! Nozzles for grinders for grinding wood can have different grain sizes. Her choice depends on the type of work. Coarse-grained products are used for rough, rough processing, and fine-grained products are used for fine finishing.
Which tool is best for wood sanding? This operation can be performed using an angle grinder or a special grinder. The choice of tool depends on the purpose for which the surface will be processed. If grinding is necessary in order to prepare the wood for painting, then you can use a special disc on the angle grinder.
For varnishing wood, it is best to process it with a grinder. There are several varieties of this equipment. Longitudinal type devices are so called because of the direction of movement emery tape. In turn, in the vibration variety, circles are used on which abrasive material is applied.
Metal brushes for grinders for rust cleaning and woodworking
Many people believe that with the brush heads used for angle grinders, only steel products can be cleaned. However, such tools are also used when it is necessary to process wooden details. For wood, nozzles with brass wire are used.
Brushes have some advantages over abrasive discs. They have a long service life and lower cost. They are used in the case when you need to remove rust or old paint from the workpiece. Separately, it should be said that brushes are indispensable tools for processing hard-to-reach places.
Brass nozzles on angle grinders for woodworking allow you to remove paint and varnish material as efficiently as possible. Brushes are used for more than just cleaning surfaces. This tool is also used when it is necessary to artificially age the wood. This process is called brushing.
Brushing is used to create unique design interior items. Using the angle grinder, you can process small items. On an industrial scale, such a tool is not operated. The nozzle for brushing on the angle grinder allows you to highlight such elements of wood as rings and various irregularities.
Metal brushes are able to quickly and effectively remove old paint from steel pipes, remove rust and plaque. When choosing such nozzles, it is imperative to pay attention to their rigidity, since the operational efficiency of the brushes depends on this indicator.
To use such a nozzle, you must have an angle grinder, which provides for the possibility of installing a second saw blade. And it is also necessary that it has an outlet for connecting a vacuum cleaner. When crushed, quite a large number of construction waste. To protect the master during work, a casing for the angle grinder is used.
Note! Strobing nozzles are not suitable for all angle grinders. The device must be powerful enough to provide the desired result. The minimum angle grinder in this case should not be lower than 1500 watts.
Before buying discs, you should pay attention to the length of the shaft. This element must necessarily have sufficient length necessary to install an additional circle. The second disk is needed to form the opposite wall of the groove.
For use, you must have a grinder, which provides for the possibility of installing a second saw blade
The dimensions of the disk itself also play an important role. This is due to the fact that the diameter of the circle affects the depth of cut and work efficiency. Security is also important point, depending on the dimensions of the nozzle on the grinder for chasing.
Such a design affects the nature of the load: it becomes more uneven. Therefore, when choosing a tool, it is necessary to pay attention to what type the bearings belong to. Ordinary ball parts fail much faster. Experts recommend using angle grinders with roller bearings for chasing. Needle products are also suitable for such work.
During operation, the chasing wheels must act in one direction - towards the master. Otherwise, the tool will bounce off working surface.
Before starting work, it is necessary to attach a nozzle to the angle grinder for a vacuum cleaner to the angle grinder. A tube is fixed to it, which is required to remove dust and larger particles. During operation, it is necessary to hold the tool firmly to prevent the discs from jumping off.
If necessary, the grinder attachment can be installed on a chainsaw. It is easy to buy such a product in any store that specializes in the sale of gas tools. Its installation is described in detail in the instructions, so there should be no problems.
Some chainsaws are simple in design, so it is much easier to install a grinder on them. For example, the Stihl chainsaw is very popular. The grinder attachment on the saw may fit some models, compatibility with which is not indicated in the technical documentation of the tool. In order to choose the nozzle correctly, experts recommend comparing the diameter of the crankshaft of the saw with the same indicator of the grinder hole.
A variety of nozzles on the modern market makes it easy to change the purpose and performance of the device. However, not everyone knows about the possibility of converting a chainsaw into a cutting and grinding tool. Most people are familiar with the reverse. – nozzle saw on the grinder.
Note! When buying such a nozzle for a saw, one important point must be taken into account. The selection of the grinder is carried out under specific model chainsaws.
The nozzle pulley, which is the leading one, can be of different types. Before buying, you need to evaluate the compatibility of the chainsaw main star and the nozzle pulley. If the tool does not fit, then it is not possible to install it instead of the clutch.
Varieties of pulley nozzles grinders on a chainsaw
It should be noted right away that there is no official classification of nozzle pulleys of this type. Consider the most common pulley options. The first of them belongs to the Stihl 180 chainsaw. It has some design features. Such a pulley looks like a closed bowl. A similar element is not collapsible and is used in the following modifications of the Stihl saw: MS 180, MS 250 and MS 170.
Nozzle grinder for chainsaw Stihl 180 can be installed on the drive sprocket of the saw without removing the clutch. In this case, there is no bowl at the pulley. There are several variants of this design, which are classified depending on the pitch of the sprocket. The main advantage of this type of nozzles is that they are very easy to mount. It is also worth noting their reasonable cost.
Chainsaws professional type differ in that they have a clutch, the sprocket of which, if necessary, can be replaced. For such devices, special pulleys are used. The cost of this tool is more, however, its quality characteristics will be better.
Attachment angle grinder for chainsaws Calm, Partner, Taiga, etc. is used when you need to make an even cut on wood or metal. During operation, you must be careful, and before starting it, you must definitely check the correct installation of this nozzle.
Rating of grinders in 2018: the best models in terms of cost and quality
To date, there is a huge variety of angle grinders, which differ in the manufacturer, technical specifications and cost. Some models are very popular, as consumers note their advantages over standard devices. Before purchasing this tool, it is recommended to pay attention to the angle grinder rating, which contains the best representatives who have certain advantages.
Interskull UShM-125/1100E. This model of the Interschool brand belongs to the budget segment. Its distinguishing feature is the highest power among inexpensive angle grinders. Many users note another advantage of this device - soft start.
The cost of this tool is only 3900 rubles. Of the minuses, only a large mass of the product can be noted. It is used for discs with a diameter of 125 mm. For circles of 230 mm, there is a heavier model from Interschool - angle grinder 230.
Makita GA5030. Such a grinder costs about 4,000 rubles, so it is also classified as a budget segment. The main advantage of this device is minimal amount vibrations during its operation, which affects the convenience of work.
The Makita GA5030 angle grinder has a rather small power (only 720 W). However, this is sufficient to work with metal pipes, ceramic tiles and wood. The weight of the device makes it easy to work with it. The mass of this model is 1.4 kg.
Bosch GWS 20-230 H. Bulgarian from a well-known German manufacturer, which is distinguished by high build quality and component parts. The cost of the model is approximately 7200 rubles. Such a device belongs to the middle price segment.
Helpful information! Many users note that the Bosch angle grinder of this series is one of the best options for home use. It is also worth noting that the device itself comes with an additional handle and 8 different circles.
Hitachi G18SS. An efficient device that has quite affordable price(6000 rubles). The advantage of this model is that it has a large margin of endurance and has protection against overheating. Bulgarian Hitachi - great option for home use.
Safety precautions when working with discs for grinders
Use of any construction tool has its own nuances. Before using the grinder, it is necessary to study the safety precautions in detail, since its improper operation can lead to serious injury.
The safety of the angle grinder primarily ensures protective cover. In the event of a disc split, this element protects the master from splinters. In no case is it recommended to remove the casing from the grinder.
The direction of rotation of the disc is also important. It is impossible to allow situations in which the movement of the circle will be the opposite of the master. This can lead to the fact that the grinder will break out of your hands. The direction of movement of the disk should always be towards the person working with the angle grinder.
For home use, it is recommended to purchase an angle grinder with speed control. This is due to the fact that different materials require different wheel speeds. One of the most important rules: it is strictly forbidden to use discs that do not correspond to one or another material.
And, finally, the last thing to remember is that angle grinders cannot be used for other purposes. The passport of the device clearly indicates what this or that angle grinder can be used for, as well as the limits of its functionality. Subject to all of the above rules, working with an angle grinder will be as safe as possible, and the tool itself will last more than one year.
An angle grinder is a very common tool that can be purchased on the market, in a store or ordered online. This device has many options for use precisely due to the possibility of changing nozzles. Before purchasing a grinder, you need to take into account what it will be used for and study the range of discs. Choosing the right nozzle will allow you to do the job quickly and efficiently, and most importantly - safely.
Every man knows. They are used in all areas of mechanical processing of any materials. They are effective, easy to use and have a low price.
But the correct selection and use of technical brushes will increase the performance and resource of brushes, as well as improve the quality of processing.
To work correctly with a brush - to achieve the quality of processing.
In this article, we have collected information about correct selection modes of operation and the choice of technical brushes that are optimal for solving your task.
The method of selecting the operating mode.
In case of insufficient effect, you should:
- Increase the speed by using a larger diameter brush and/or increasing the RPM (do not exceed the maximum allowed!)
- Use a brush with a shorter bristle
- Apply a brush with a larger diameter wire
When too strong effect follows:
- Reduce speed by using a smaller diameter brush and/or reducing RPM
- Apply a brush with a longer bristle
- Apply a brush with thinner wire
When filling up burrs, you should:
- Increase speed and/or use a shorter bristle brush
- Check the position of the brush and the workpiece: the brush should hit against the cutting direction and work with the tips of the wires
- Use a wider brush
- Use a brush with a larger diameter wire
Correct clamping force.
A prerequisite for successful brushing is a light pressure, as only the tips of the wires do the work. The lack of speed cannot be compensated by the clamping force. Squeezing destroys the brush faster.
Line speed.
The speed indicated on the brush or in the catalog is the maximum safe. Usually, the operating modes of brushes are much lower than safe ones.
To use quality correctly is to work effectively.
Cold-drawn wire is used with a self-sharpening effect that provides bare-metal stability that outperforms competitors by up to 25% in tensile strength and up to 13% in hardness.
Pay attention to the conical brushes, which make it possible to work in right angles. But at the same time, they can be used for processing edges, grooves and surfaces, including concrete.
Speed not less than 35-45 m/s, *6000-12000 rpm.
If you process the surface with an angle grinder, for example body work or fence, use a cup brush. For drills cup or cylindrical with shank.
Shank brushes 3000-15000 rpm
Corrugated wire technical brushes are best. Important speed is not less than 35 m / s, work with the tips of the wires and the direction of rotation of the brush against the direction of cutting.
Speed not less than 5-25 m/s * 3000-15000 rpm
Removal of rust and paint without thinning the metal, without the cutting operation characteristic of abrasives, with a subsequent decrease in corrosion resistance.
Speed not less than
5-25 m/s (stripping)
35-45 m/s (finish)
Corrugated stainless wire shank and cylindrical brushes easily remove tarnish from welds. Unlike the use of chemicals, there is no need for washing, drying products and special storage of chemicals.
Speed not less than 30-40 m/s * 10000-15000 rpm
Well proven when processing soft sensitive surfaces. The brushes are suitable for processing wood and plastic. Avoid overheating - the polymer bond of the abrasive has a relatively low melting point.
Speed not less than 5-20 m/s *1000-4500 rpm
If you are unable or unwilling to use the drive, use hand brushes. Pay attention to the correct choice of pile material depending on the material being processed.
Note:
There are brushes with a shank for drills that can withstand a maximum speed of 4500 rpm, and professional ones that can withstand up to 20,000 rpm.
The higher the speed, the higher the cleaning effect, as a rule.
Thick wire (0.50-0.80 mm) for rough, aggressive cutting.
Fine wire (0.10-0.35 mm) for finishing.
Steel wire: for processing metal surfaces.
Steel wire rope: increased hardness and self-sharpening effect.
Steel corrugated wire: flexible, different aggressiveness depending on the wire diameter.
Stainless steel wire: for stainless steel and aluminium.
Brass wire: for processing soft materials, bronze and copper.
Polymerabrasive: finishing, roughening and texturing.
When you have chosen the right operating modes and selected the right brush, it is important not to forget about the most important thing - safety precautions.
Observe the necessary safety measures when working with power brushes:
- People who are in the area of work with power brushes must wear goggles or a mask.
- Inspect the brush before use for mechanical damage.
- Pay attention to the correct attachment of the brush to the driven tool.
For your safety: wear protective clothing.
Brushes are called as current collectors inside the grinder - necessary element an electric motor, without which an angle grinder, like any other electric tool, cannot work, and removable nozzles that allow cleaning, grinding and even polishing various surfaces with this tool. In this article, we will try to deal with those and other brushes.
Brush features
If we talk about electric brushes, then first you need to explain the name. This device was called brushes in the early days of its existence (the beginning of the 20th century), when, indeed, a design resembling a brush or, more precisely, a brush was used to remove current from the rotor of an electric motor. Such a device, despite its high efficiency, turned out to be too short-lived and was replaced by a more durable one, made of a dense material into which a copper wire is pressed.
The movement of the rotor of the electric motor causes constant friction of the working surface of the electric brushes, which is the main reason for the failure of this part. As a result, they have to be changed periodically. This process is natural and inevitable during long-term operation of any power tool. It is very simple to identify brush wear: a previously reliable unit will start to work intermittently, the characteristic smell of ozone may appear from the abundant formation of sparks in the current collector. It is advisable to replace the electric brushes at the first sign of wear.
Electric brushes are graphite, carbon or metal-graphite. In all varieties, the main material is carbon.
In the first case, the product is pressed at high pressure, and then thermally processed, gaining increased wear resistance. The coal option is the cheapest, as it does not involve heat treatment. These brushes are the least durable. Metal-graphite brushes are the most expensive, since, in addition to carbon, they contain metal powder. This is the most wear-resistant option, which in household appliances can be found very rarely. As already mentioned, a removable attachment for a grinder is also called a brush.
In order for the UMSh (angle grinder) to perform its main functions, it is necessary to install one or another nozzle on it. These can be cutting or grinding discs or brushes with various kinds of pile, fixed in a circle. Such a removable device is called a cord brush or even shorter - a cord brush. Brushes, like discs for UMSh, are consumables. During operation, they wear out, and they need to be changed. The brushes for the grinder are designed in such a way that they are mounted on the rod thanks to the hole in the center, this is their main difference from the brushes for the drill, which have a shank for their installation in the drill chuck.
The bristle of the brush, depending on the specifics of its application, can be steel, brass, polymer fibers and even wool.
What are they for?
In this section, we will not talk about electric brushes for a long time, their purpose is to remove current from the rotor (armature), in other words, without them there will be no rotation in the electric motor, the rod of the power tool will not rotate, and it will not work. But about the cord brushes you need to say more. They are used for mechanical processing of various materials. different types These attachments are used for cleaning before painting or applying primer, for brushing wood, for removing old paint from various surfaces, for polishing, grinding, smoothing corners and other operations.
They are especially necessary for cleaning metal products after welding, in order to remove scale.
Classification
As already mentioned, electric brushes can be classified according to the material from which they are made. Graphite brush, as the name suggests, is made of graphite, which is added with carbon black and binding elements. This type of current collectors is most often used for UMSh.
The carbon brush is made of the same material, but without heat treatment. Such a product wears out much faster and is practically not used for grinders. It is important not to make a mistake when purchasing replacement brushes. Carbon brushes on the grinder will not last long.
A metal-graphite brush is used in large industrial units, and it is unlikely that it will be possible to install it on a grinder. This is the most durable product, characterized by a very high price. The variety of cord brushes is much greater, their shape, material and size vary significantly, which is determined by the variety of applications for such equipment. They can also be classified according to the material from which they are made. The most popular brushes with metal bristles. A metal brush is a fairly versatile nozzle. For the manufacture of such products, both metals and alloys are used.
For work on metal, steel brushes are used. brushes from of stainless steel It is better to use stainless steel or aluminum. Often the steel pile is covered with brass, such brushes do not corrode. There are also pure brass brushes - despite their great softness, they have a number of advantages: a relatively soft effect on the material, the absence of sparks when working on high speed, no scratches in surface treatment.
The wire for such brushes can be different. Twisted wire is usually the most rigid, it can be assembled in bundles (they are more rigid and can self-sharpen) or fixed randomly. With the help of such effective nozzles, welding scale or rust can be torn off. The corrugated cord brush has a wave-like curved pile and, unlike the previous type, does not affect the surface so intensively. With its help, you can clean the surface of old paint.
Flat bristle brushes have the widest range of applications, they are the most versatile and can be used on any surface. Their effectiveness may be somewhat lower than that of specialized nozzles. Nozzles with polymer bristles, such as nylon, are used for polishing various surfaces, including metal. They can be successfully used for woodwork - to highlight the texture or finish. Plastic brushes are often used to work with soft materials.
Brushes can also be divided by shape.
Cup is used to work with large surfaces. Its form follows from the name. On such a brush, most often, a clamping nut is immediately fixed, since the special key provided with the grinder cannot be applied to it. The conical brush is used to work on concave surfaces. Radial, as a kind of flat brushes, is used to treat hard-to-reach areas. The disc brush, the most common type of cord brush, also has a flat shape and can be used for processing a wide variety of small surfaces.
And cord brushes are divided into size groups. The diameter of the brushes is determined by the technical capabilities of the grinder and the scope of this nozzle. Brushes with a diameter of less than 115 mm are usually used for processing small surfaces. It is better not to use a circle of more than 200 mm for a small angle grinder, you will have to remove the protective cover, and this is a violation of all safety standards. Such large brushes are usually used for processing large structures and only with the help of large powerful UMShs.
The most acceptable for domestic purposes is the brush diameter of 125 mm. It is possible to offer a fourth classification of cord brushes - by application. Brush brush, the name is given from the name of the technical operation, which is carried out with the help of this nozzle. Brushing - preparation of the surface for subsequent processing: removal of rust, paint, dirt. At some stages, this is a process of chemical action on the surface of the product, but the initial treatment consists in mechanical cleaning of the surface. For mechanical brushing, metal (steel or brass-coated) brushes are used. The task of such processing is the removal of scale, oil stains, minor defects, burrs, and the like. Without brushing, it is sometimes difficult to assess the quality of the weld, adhering scale can hide some defects.
For processing soft materials (plastic or wood), nylon, tow (sisal) and hair stripping brushes are used. Such brushes must be moistened with special emulsions (for wood, you can use vegetable oil), otherwise the surface will be matte.
How to choose?
In stores, the choice of cord brushes for grinders can be very wide. Consider what you need to consider when choosing this type of nozzles. The selection parameters can be dictated by the nature of the work to be done and the size of the angle grinder on which the brush will be installed. On a small grinder, in no case should you install a nozzle designed for a large unit. It is also important to know the number of revolutions of the grinder, the brush must be selected in accordance with this indicator. If on a fast angle grinder there is a circle designed for low speeds, its effectiveness will be small, since, most likely, it will fail before the end of the work. Working on a “slow” angle grinder with a nozzle for a revolving unit will be very laborious and will take much more time than with a brush corresponding to the capabilities of an angle grinder.
If you have decided on the size and type of brush, you should pay attention to its quality. The wire iron brush should have an evenly distributed bristle, individual bristles should not be longer or shorter, this factor can cause poor surface finish and excessive vibration, therefore, the load is not only on the parts of the grinder, but also on the hands of the one who will do the work .
Excessive vibration of the machine during operation - main reason high load on the muscles of the hands. With a brush with a small diameter, the vibration is always less. A polymer brush is the lightest type of cord brush, and the vibration with it is the smallest, but not every surface can be treated with such a nozzle. A polymer-abrasive brush is used for brushing (aging) wood, and you should not try to process metal with it.
If you have no experience with cord brushes, of course, you need to consult, and sometimes you have to purchase several different nozzles in order to determine in practice in the process of work best model. The most popular manufacturers of cord brushes, presented on the shelves of specialized stores, can be built into a kind of rating. Russian brands: Zubr, Praktika, SibrTech, Enkor. Foreign: DEXX, FIT, MATRIX, Lessmann, Wortex.
angle grinder(angle grinder, in other words, a grinder) is a power tool that is actively used by both household craftsmen and professionals in their field. With the help of such equipment, you can not only cut the metal into separate blanks, but also prepare the parts. But this requires buy a special nozzle- a brush with a pile located around the body of the device, which is often called a brush or cord brush.
In addition, periodically the brushes "fail". This happens due to the high loads that the nozzles are subjected to during work, because it is a consumable material. Thus, this part needs to be replaced. In both cases, the performer needs to know which brush to choose. To do this, you must possess manufacturers and trademarks. Responses to data topical issues given in our article.
Functions: for cleaning, paint removal
Cord brushes for grinders are used in all areas where mechanical processing of any materials is required. The brushes are easy to use and effective. and what is important - have a low cost. The right choice increases the performance and life of the brushes, as well as improves the quality of the work performed.
Brush for angle grinders, corrugated wire. Photo All Instruments.ru
With the help of cord brushes performers carry out the following operations:
- deburring;
- removal of rust, paint, varnish, anti-corrosion coating, slag, scale, resin, sealant and other contaminants;
- grinding;
- polishing;
- grout;
- texturing;
- wood brushing;
- grinding sharp corners;
- removal of discoloration.
Such operations are often performed during welding and body work. Since welding is common in almost all areas of activity, brushes are also in high demand among customers of various categories.
Types of cord brushes on angle grinders for wood and metal
The criteria for the typology of brushes are the configuration of products, the material of the pile, the size (diameter), and the type of wire. Each type of brush has its own characteristics and is suitable for certain operations.
Production material
The material from which it is made bristles for brushes, is the main criterion for classification. Depending on the material of the processed products, appropriate nozzles should be selected.
Metal (iron), brass, copper
cord brushes with metal pile the most popular. They are versatile, with their help it is possible to perform various types of work. This type of nozzle includes brushes with pile not only from metals (steel, copper), but also alloys, in particular brass. The latest version of the nozzles is designed for processing soft materials, bronze and copper.
Cup brush for angle grinders with a bristle of twisted metal wire. Photo
Steel: stainless steel (stainless steel), brass plated steel
Nozzles with a pile of steel are designed for processing metal surfaces. Cord brushes with bristles stainless steel should be used for work with products from the corresponding material, as well as from aluminum.
Cylindrical brush with stainless steel bristles. Photo VseInstrumenty.ru
This "combination" provides high quality processing. There are also models with brass bristles, i.e. steel bristles are covered with brass, which provides protection against corrosion.
Reference. Often, steel and metal cord brushes are combined into one category.
Nylon (polymer)
Nylon and other polymer tips are suitable for polishing metal products, run woodwork, finishing, texturing, roughening. In addition, brushes made of similar materials are designed for parts made of soft metals.
Forms
There is a wide variety of nozzle configurations for grinders. Each type is used to perform certain tasks. The right choice provides convenience for the performer and quality.
Round
Despite the large list of shapes, all cord brushes have a round shape. clearly given fact shown in the illustrations.
Bowl-shaped, cup-shaped
Cup cord brushes are the best fit for processing large surfaces.
Cup brush for angle grinders trademark. Photo by InstrumentLend.ru
conical
Tapered brushes should be used for work with products, the surface of which has recesses.
Radial
Flat brushes, which include radial, are used to treat surfaces located in narrow and hard-to-reach places.
Radial brush for angle grinders with a pile of twisted steel wire. Photo
Disk
Disc nozzles are the most common, they also have a horizontal plane. Therefore, they fit perfectly for surface treatment in narrow places.
Disc brush for angle grinders, twisted steel. Photo 220V
Wire
For the manufacture of bristles for nozzles, various types of wire are used.
twisted
Nozzles, the working part of which is made of twisted wire, are brushes with villi twisted into bundles or in a chaotic manner. Such a structure provides impact severity, the bristles break less and fly out as they wear.
Brush for angle grinders, "plate", twisted wire. Photo
harness
Cord brushes are twisted bristles. Such devices are characterized by increased hardness and self-sharpening effect. They are used in particular for the removal of rust and scale.
Cup harness cups. Photo
Corrugated
Corrugated villi have a number of wavy bends. Such bristles have springy properties, which softens the impact and reduces the vibration of the angle grinder.
Cup brush with corrugated steel wire. AllTools.ru
flat
Flat bristle bits are the standard choice for machining metal, steel, wood.
Cup brush with a straight line. even bristles. Photo
Dimensions
Speaking about the sizes of nozzles for angle grinders, they mean diameter. Allocate small cord brushes, the dimensions of which do not exceed 115 mm. Such devices are used for processing small surfaces. Their use is relevant both in everyday life and in production conditions.
Brush for angle grinders. small, diameter 65 mm. Photo
There are also large brushes with a diameter of 115-200 mm. Designed for industrial applications, suitable for grinding machines significant power.
Other types: manual and for a drill
Particularly popular are drill bits and hand cord brushes. Devices are often combined with brushes for grinders.
Hand brush with metal bristles and wooden handle. Photo
They are a separate group Supplies. The demand for brushes for drills and hand tools is due to the variety of types. A wide range ensures the best choice.
How to choose?
When choosing a nozzle for an angle grinder, you should pay attention to the following details:
- Pile must be distributed evenly have the same length. Otherwise, the brush vibrates, the processing is uneven and of poor quality.
- An important parameter is recommended machine speed. If you put a low-speed brush on a high-speed grinder, it will quickly break. The fast spin brush is ineffective on a low speed machine.
- The less cord brush diameter, the lower the load on the engine and, accordingly, the vibration. As a result, the hand gets tired less. But what larger diameter, the fewer passes you need to make. Accordingly, less time and effort wasted.
Every man in the assortment of tools should have such things as a grinder and a drill. The grinder is able to clean the metal from old paint and corrosion. In everyday life, a drill can greatly facilitate repair work if it is necessary to stir any mixture or tighten screws.
But each of these tools has a common goal - cleaning the surface from rust and corrosion. To do this, use metal brushes. On the Internet, you can find photos of metal brushes so as not to make a mistake in choosing. In this article, we will look at the types of brushes.
Brushes for drills and grinders
Tools such as a drill and grinders can clean any surface from rust and corrosion. Consider the main types of brushes.
cup brush
The brush is able to cope with cleaning the surface from traces of concrete and corrosion. Such a metal brush for grinders and drills is often used to process flat steel products.
If you need to process wooden surface then use a nylon brush.
Tapered brush
Such a brush for a drill and grinder is used in order to get rid of rust or other debris in hard-to-reach places. This happens because of its peculiar design of the brush.
Disc brush
If you need to clean a large area of \u200b\u200bthe surface, then it is the disk brush that is used. It has high rigidity and strength, so you can use it for a long time.
The metal cleaning brush is manufactured according to the latest technologies. Such a brush is commonly referred to as a brushing brush and is used in industry.
Korshchetka
Brushes are used to clean parts from rust and flux deposits. Also, if it is necessary to give the product a marketable appearance, this type of brush is used.
If it is necessary to clean a certain plane of debris, then use a nozzle with hard bristles. To complete the cleaning, use a nozzle with less rigidity. This is used so that the brush does not spoil the surface itself, but simply cleans it from the remnants of unnecessary old paint.
For right choice The best brushes for metal should be purchased from the best and most reliable manufacturers who have earned the trust of their customers.
Choose the right brush for the grinder and drill. Consider when choosing the speed for the machine. This rule cannot be ignored, because if you put a brush designed for low speed on a machine with a high speed, then there will be no result.
And such a brush will quickly deteriorate and become unusable. The same applies to metal brushes. They are designed for high speed rotation, so you should not turn it on at low speeds. So, such a brush will not give the desired result.
You should be very careful when buying, because the final result depends on it. You should purchase brushes only from reliable manufacturers, so as not to buy a low-quality brush and not waste your money.
Photo of brushes for metal for grinders and drills
