How to choose a disc for a grinder - recommendations from the masters

How to choose a disc for a grinder - recommendations from the masters How choose the right disc for the grinder so that there are no problems

The grinder (or, if correctly, an angle grinder) refers to those electric tools with which you can perform various types of work - cutting, cleaning, grinding, polishing, brushing.

For this, all sorts of discs for an angle grinder and unusual attachments are used.

The main thing is that the selection of consumables is correct. The attachment must necessarily correspond to the operation to be performed on a specific grinder model.

General information

They produce a large assortment of tools and attachments, and each of the varieties is used to solve specific problems or even several operations.

It will be possible to buy them at a retail outlet from manufacturers (it does not matter, from foreign or domestic) at different prices. We invite you to consider the main types of attachments, their purpose, as well as how to choose the right disc for the grinder.

Varieties of discs for a grinder

Wheels for an angle grinder are replaceable elements. When working with various materials, one should understand their varieties. This helps to carry out high-quality operations.

Circles can be easily classified according to the following parameters:

  • By purpose.
  • By the type of work carried out.
  • By design.
  • By cutting type.
  • By material of manufacture.

  • Fit.

Please note, that according to the purpose, the attachments for performing work can be for wood, metal, concrete, stone, marble and others. Manufacturers indicate the purpose in the marking, which is applied to the product itself. Most varieties are versatile tools that work with different types of materials.

By the type of work performed, which are indicated in the title, manufacturers try to produce such attachments for an angle grinder:

  • How to choose a disc for a grinder - recommendations from the masters Cleaning (metal brushes, flap end wheels, batch or with a mandrel).

  • Roughing (wheels for grinding workpieces, twisted cutters, roughing diamond discs).
  • Sawing - this is the presence of teeth on the cutting edge, and this is a structural feature of the product. This makes it possible to obtain high-purity cuts on plasterboard, wood, plywood, gas silicate and other similar materials.
  • Cut-off - such cut-off and diamond discs are produced with a solid edge for cutting and everything is divided into segments.
  • Grinding (discs with varying degrees of grain size and hardness).

  • Polishing (here we are talking about felt, felt, as well as sanding and with a special Velcro).
  • For cutting joints in concrete, asphalt and more.
  • Milling (for cutting cups, grooves, edging, etc.).
  • Sharpening - their characteristic feature is the ability to carry out operations through the lateral surface.

A disc is a product with a certain diameter

... and a thickness that has a bore to be attached to an angle grinder with a cutting solid edge , with a segmented or even figured configuration. The choice of a particular type will depend on the operation being performed and the material on which the operation will be carried out.

Cutting with this nozzle can be done dry, combi or wet. Such a feature is indicated in the marking.

How to choose a cutting disc for a grinder?

According to the material of manufacture, the discs can be abrasive, diamond, carbide and brush. The main wheels of the first type will be a special latex paper or even fiber, on which an abrasive layer and a binder are applied.

The accessory, which is made of fiber, comes with a plastic or rubber backing pad.

A carbide wheel is one that is made of a material such as alloy steel. These consumables can be used to cut aluminum, high carbon steel, stainless steel and other materials as indicated on the marking.

Diamond discs are a universal consumable. They are a steel product, on the surface of which there is a diamond coating. This makes it possible to obtain the thinnest cut on any type of material.

Popular products, which are popularly called "turtles", are a type of attachment made on a flexible basis, has a corrugated structure, and are attached with Velcro.

Moreover, they produce diamond discs with a solid edge for wet cutting, turbo segment and segment for dry cutting, as well as combined ones.

Standard disc sizes

Outside diameter, cm Thickness, mm Bore diameter, cm
11.5 1 ; sixteen; 2; 2. 5; 3; 3.


2. 2;

12.5 0. eight; 1; 1.25; sixteen; 2; 2.


15 3 and 3.2

1. 32; 2.223

18 1; 1.25; sixteen; 2; 2.

5; 3


1. 6; 2; 2.5; 3; 3.2; 4

2. 223; 3.


The sizes of non-standard circles may differ from what is indicated in the table if they are made according to the manufacturer's specifications.

Cutting discs

Cutting discs, or as they are also called, abrasive discs for angle grinders are used most often. Silicon carbide or fused alumina with different sizes and hardness is used as abrasive grains.

Also available are nozzles on bakelite (with and without strengthening elements) and vulcanite bond with a recessed center and flat circles.the latter type of products cuts for metal using an emulsion, because it has a low degree of thermal stability, and also cannot work under increased load.

Discs differ in the material of manufacture with which they work. The marking of such products has a color and an inscription. The decoding of the inscriptions is presented in the table.

Inscription Purpose - for cutting ..


Me l Metal
Co Stone and concrete
Stayer l Steels
A luminium Non-ferrous metals, aluminum, alloys
Inox High-alloy and stainless steel
Ca stiro n Cast iron and cast products

Please note what if there is a blue stripe on the disc, then the circle is created for working with metal, and if there is a green stripe, then for working with concrete.

By the way, products made on a vulcanite bond operate at a speed of 50-80 m / s, and at a bakelite bond 80-100 m / s. On the disc itself, there is always a date until which it can be used, i.e.

an expiration date. If the disk is made on a vulcanite bond, then the shelf life is not more than 1 year, and on a bakelite bond it is even 6 months.

Rough discs

Which disc to choose for the grinder? A product such as grinding wheels can be attributed to the group of grinding materials, and they are used before preparing the product for the grinding process, to clean contaminated surfaces on metal. They are made of a binder and an abrasive.

They are produced in the form of solid and flexible products.

In the first case, a bakelite bond, ceramic or even vulcanite, is used, and in the second, the circle is made on the basis of rubber. The degree of surface cleaning will largely depend on the grain size. A distinctive feature of grinding wheels is that they always have the same bore diameter, and it is equal to 2. 2 cm. They are produced with an outer diameter of 11.

5; 12. 5; fifteen; 18 and 23 cm, and with a thickness of 0.3 to 2 cm.

It is interesting that this group of products includes cord brushes, in which the working surface is a metal wire. Products are also called twisted cones, and they can be both disc and bowl-shaped.

Discs for grinding the workpiece

How to choose a disc for a grinder - recommendations from the masters Products from this group make it possible to perform sanding with the required degree of roughness on wood and metal. Even the grain size (abrasive) will play an important role. The smaller the grain size, the higher the quality of the polished surface will be.

Manufacturers try to produce wheels with many grain sizes, from 50 to 3000.Consumables can be made of sandpaper, and have a felt, felt, spongy or fabric surface.

The felt wheel is used to perform the polishing operation on an angle grinder, which is equipped with a speed control device.

Products are made from fine or coarse wool of sheep, goats, cows and camels. The diameter of such circles ranges from 5 to 15 cm, and their thickness is 2.5-3 cm. It is recommended to polish at the speed indicated by the manufacturer on the consumable.

Grinding wheels

With the help of such wheels, or rather discs, you can bring the edge of the cutting tools back into working condition, and also clean out the welded seams. They are produced both in bowl and flat. A distinctive characteristic of such products is the thickness, which should be at least 0.5 cm.

How to choose the right discs for a grinder

Discs for an angle grinders in retail chains can be purchased in a different assortment and at different prices (there are moderate, and if very high).

With the help of products that are made of different materials and using different technologies, they perform various operations. What are the basic rules for choosing and what should you pay attention to? Here you should clearly understand what material you will have to work with.

And you should also pay attention to the following factors:

  • Thickness and diameter (indicators should not be more than those indicated in the passport data for angular grinder, or, more simply, the disc must fit into the protective casing).
  • Landing dimension (it must necessarily correspond to the spindle diameter of the electrical device).
  • Rotation speed (it must necessarily correspond to the type of tool, and must be indicated on the disc itself).

  • Type of cutting (wet, dry or combination method).

The rules that should be followed in order for the products to serve as long as possible are quite simple. For hard materials, opt for soft wrapped discs, and for soft materials choose hard discs. The working area during operations should not overheat, and therefore we advise you to periodically remove them from the material so that it can cool down.

A deep cut cannot be made in one pass.

You can also not press products with great force and work at high speed. It is worth remembering that if in the process of work there is a beating of the disk, then there will be cracks on it, and such a consumable cannot be cut. It definitely needs to be replaced.

( 1 grade, average 5 of 5 )