What Is The Disc Made Of For The Angle Grinder

5 types of discs for angle grinder and their purpose
What disc for an angle grinder is needed to cut wood? And metal? And which wheel is needed for grinding a concrete floor? Read about basic angle grinder discs in the article!

5 types of discs for angle grinder and their purpose

With an angle grinder you can cut, sharpen, grind a wide variety of materials and surfaces. But for each of them you need a suitable disc. About what circles are for an angle grinder and what they are for. In this guide. There are also instructions on how to change the bit and tips to help you deal with a jammed accessory.

What is Disc for Angle Grinder

It is an attachment for an angle grinder. The required option is selected in size (diameter) and material, depending on the task.

Material classification

Depending on the purpose, the material of the attachments for the angle grinder also differs. Each species has characteristics that make it most suitable for a particular job. The arsenal of grinding and polishing wheels is quite impressive.

what is the disc made of for the angle grinder

Cutting discs for an angle grinder are also divided into several varieties, depending on the material:

  1. For metalworking. Steel options with an abrasive surface made of alumina or electroorundum.
  2. Working with a stone is carried out using a cutting element made of silicon carbide abrasive. They can be whole and divided into segments. The first option is used for dolomite, limestone, and the second for tiles and other hard surfaces.
  3. Saw wheels are used for wood. They differ in the shape of the teeth. So, there are variable-beveled and straight models. The former are universal, while the latter are designed for needles and other soft wood. There are also trapezoid-shaped teeth. They are suitable for medium to high density materials.

We should also talk about diamond accessories. They are made of steel interspersed with diamond chips. The peculiarity of such wheels is increased wear resistance.

How to choose?

In order to choose the right cutting wheel for your angle grinder, there are several important points to consider. First you need to understand the labeling of the disks. It is difficult for an ignorant buyer to understand what certain colors, letters and numbers mean.

  • Colors indicates the material for which the disc is intended. For example, the blue circle is for metal cutting, and the green circle is for stone. And also circles are usually accompanied by a signature about the material for which it is needed.
  • The letters A, C, and AS refers to the material used to make the disc. The letter A stands for corundum, and the other two are silicon carbide and fused corundum, respectively.
  • And also circles differ in their diameter. The minimum circle size is 115 mm and the maximum is 230 mm. Small diameter circles are usually designed for low power grinders. Diameters from 125 to 150 mm are intended for medium power grinding machines.
  • Circle thickness can be 1 mm (thinnest) to 3 mm (maximum). A large diameter bit is thicker, and a smaller diameter wheel is smaller. Small wheels are usually used for cleaning and processing, but larger diameter wheels are used for cutting hard materials. A universal option would be a circle with a diameter of 150-180 mm. Such discs can both cut and process the surface.


Consider what is a cutting wheel for an angle grinder. In fact, this is the main device in the process of cutting or processing material. The motor in the angle grinder spins the diamond disc, which has a certain amount of cutting crystals. It is these strong crystals that cut the surface.

The milling cutter can be designed for different types of work, depending on the material with which it is necessary to work, and according to its functional purpose. There are cutting wheels for metal, wood, plastic and even stone. Over time, the circle gradually grinds down and becomes smaller.

Depending on its purpose, attachments for an angle grinder can be classified into several types.

Cutting discs are perhaps the most popular model of cutting discs. They are used for cutting all sorts of materials. In turn, cutting discs can be classified according to the material for which they are reassigned.

  • Metal cutting blades are among the most durable. They vary in size, thickness and diameter.
  • Wood cutting discs differ in their appearance from metal discs. There are sharp teeth on their edges, which cut the wooden surface. Handle such discs with extreme care. There are many cases where workers have been injured from these very circles.
  • Discs for stone outwardly do not differ in any way from circles for metal, but their composition is different. These discs use different abrasive materials.
  • Diamond blades are one of the most versatile attachments for all materials. Ultra-strong crystals that grow into the composition of the circle are able to cope with metal, stone, and concrete. These discs can differ in the size of the spraying (fine and coarse), as well as the cutting edge (solid and individual cutting sectors).

This completes the classification of cut-off models. Next, it is worth considering the types of grinding discs and polishing wheels. These models differ in their coverage. They may contain sandpaper, felt. And also the grinding discs can be spongy or cloth.

It is also worth noting such types of discs for an angle grinder as sharpening and roughing (or stripping). There are also some varieties among them. For example, a disk with twisted cones. These circles are made of a round steel wire brush.

Sharpening consumables are usually small in diameter. They are used, as a rule, for cleaning welded seams or for sharpening tools. Diamond grinding wheels differ in that the work with them is carried out exclusively by the peripheral part of the wheel.

It should be said about the materials from which the cutting wheels are made. They can be diamond, carbide, abrasive and metal wire wheels.

  • Diamond discs are diamond-coated, and they themselves are usually made of steel. On carbide discs, instead of diamond spraying, high-carbon steels are used, to which nickel and chromium are added.
  • Abrasive discs consist of thick latex paper, between the layers of which there is a reinforcing mesh. These discs usually have the most affordable price.
  • Wire discs intended for stripping work. Cutting hard materials with such circles is quite difficult.


In the modern tool market, there are wheels for an angle grinder from various manufacturers from different countries. German-made discs have earned great prestige. Cutting wheels from Germany are distinguished by high reliability, precision and cleanliness of the cut.

Products of domestic manufacturers can also be distinguished. Among them “Zubr”, “Sparta” and “Tsentroinstrument” became very popular among buyers. The price for the disks of Russian manufacturers is more attractive than for foreign ones.

What are the discs for angle grinder for metal

“Angle grinder” in the common people is called an angle grinder. It is mainly used to cut metal. For example, to cut a metal corner or a water pipe with a hacksaw for metal, you need to make a lot of effort, and if you install a cutting disc on an angle grinder, the work will be done in a matter of seconds.

  • Types of work where an angle grinder is used
  • Cutting nozzle device
  • Pros and cons of different attachments
  • Grinding Disc for Angle Grinder
  • Ensuring safe work
  • Pros and cons of different attachments

    The abrasive wheel has an affordable price, there is always a wide range and some versatility. But it wears out quickly, which is accompanied by the release of sparks during use, which can lead to a fire.

    During application an unpleasant odor appears, which for a long time cannot be weathered. This makes the tool difficult to use indoors.

    Diamond discs do not cause sparks, there is practically no strong smell either. However, such a circle is afraid of overheating, so you have to take breaks during the application process. If a non-segmented disc is used, then liquid cooling is required. And also its price is quite high.

    Cutting nozzle device

    Inexperienced craftsmen often ask: “For what work are discs used for an angle grinder, what kind of discs are there for this tool?”

    The first part of the question has already been answered above. Now there will be an answer to its second part.

    The circles for this tool are of two types:

    • Abrasive;
    • Diamond.

    The most common discs. Abrasive. Previously, the abrasive was fragile, which is why it shattered to pieces, injuring the master if there was no protective cover on the angle grinder. Now, in order to work safely, a complex structure with multi-layer reinforcement is provided for cutting abrasive discs.

    Between the layers of the reinforcing mesh there is a bonded abrasive made of carbide, aluminum, various corundum and other materials. The main task of particulate matter is scraping off a thin layer of metal while cutting or polishing. During operation, the disc is grinded, its size becomes smaller. A disc whose wear does not exceed 35% can be effectively used.

    Diamond tip arranged differently. Diamond grit is applied to its outer radius using a very strong bonding material. To prevent bending during heating, expansion grooves are applied to the outer radius, which act as teeth, which facilitate cutting.

    All cutting attachments are marked according to the type of material:

    • Green color (cutting ceramic, concrete, stone objects);
    • Blue color (metal cutting and processing).

    There are also cutting discs to cut non-ferrous metals, including aluminum. You can, of course, cut the winged metal with an abrasive wheel, but the cut comes out of poor quality. To avoid this, experts can lubricate the circle with soap or wax, supply water to the work area.

    But it is better to purchase a special circle for aluminum, it is not too expensive. The abrasive for it is silicon carbide. It will allow you to easily cut non-ferrous metal.

    Types of work where an angle grinder is used

    This electrical device is a versatile tool that allows you to cope with the following types of work: cut various hard materials (metal, stone, wood), which is the most popular area of ​​application of this device; grind (sand, polish) various objects; cleaning material from paint, glue, rust.

    For these purposes special nozzles are used, called disks. The most popular are cutting discs. They are installed on an angle grinder and cut, molded or cut out any material.

    There are jobs that cannot be done without an angle grinder. For example, cut a square-shaped hole to provide ventilation in a garage door made of metal. Of course, besides the specification for the different types of surfaces to be processed, there are mechanical characteristics for the discs.

    The main one is disk size. With its help, the main possibilities are determined, in particular the depth of cut. However, a significant diameter is not always good:

    • You need a large angle grinder to use it. It should be borne in mind that a powerful angle grinder is required not only to ensure the rim of the disc. To spin a cutter with a diameter of 230 ml, a 1 kW motor will not be enough;
    • A large angle grinder needs space. For example, cutting off a rusty exhaust manifold pin under the bottom of a car is easier with a small angle grinder that has a small diameter disc. Therefore, many specialists leave the discs half-worn out to do this kind of work.

    Another example of using a disc for an angle grinder for metal, which has a small diameter. With it you can cut reinforcement from a reinforced concrete wall, when you need to install a switch, or a block of automatic machines for an electric meter. But to cut the corners of “80s” to build a fence or a shed in the yard, you can only use a disc with a diameter of at least 150 millimeters.

    Grinding Disc for Angle Grinder

    The second, on the well-known area of ​​use of the angle grinder is metal grinding. If you use the nozzles in a complex and consistent manner, then you can get the result no worse than with the factory processing on a special machine (which cannot be said about a metal brush or sandpaper).

    When the craftsman is experienced, he can process stainless steel or aluminum sheet in such a way that a pattern created by traces of the work of a circle appears on them.

    There are two types of grinding wheels:

    1. Petal. It acts more softly, grinds relief surfaces well, but does not cope well with removing hard protrusions;
    2. Abrasive. It is needed to remove hard unevenness (melting of welded seams, large burrs during cutting or cutting metals). It can be used to sharpen tools. If you have the skills, you will be able to grind a flat surface, but there is a high probability of error and it takes a lot of time to work.

    What are the discs for angle grinder for metal

    “Angle grinder” in the common people is called an angle grinder. It is mainly used to cut metal. For example, to cut a metal corner or a water pipe with a hacksaw for metal, you need to make a lot of effort, and if you install a cutting disc on an angle grinder, the work will be done in a matter of seconds.

    • Types of work where an angle grinder is used
    • Cutting nozzle device
    • Pros and cons of different attachments
    • Grinding Disc for Angle Grinder
  • Ensuring safe work