What is a cutting disc?

A cutting wheel is a special type of disc that is used to cut metal. These discs are often used in the construction and repair industry, as well as in other metalworking trades. In addition, these grinding wheels are also useful for cutting rivets and other types of fasteners.

A cutting wheel has a rim, called a "spoke". The radius is smaller than a standard disc and therefore does not rotate freely, but only on the inside of the case or hub of the wheel. You can find cutting discs made of many different materials, including cutting steel, aluminum, or titanium.

What is a cutting disc made of?

A cutting disc consists of a circular steel disc with a cutting edge that rotates at an adjustable speed. The disc is usually coated with a substance like Corundum for added comfort and grip. This allows the disc to glide smoothly over the cutting surface without catching or catching the fibers. The discs are usually made of Corundin for better durability and economy. A cutting disc when in use, should normally be used with a handle on the disc machine. This allows you to easily manipulate the machine and adjust its position.

The type of abrasive like corundin or zirconium are bound with a glue, a binder. It can be rubber, bakelite, or metal…

The best cutting disc for professionals

It all depends on the use you are going to have of it. If you want to cut quickly without worrying about the finish for example, choose a disc with low granulity. This disc is designed to cut different materials depending on the speed you set quickly.

On the other hand, if you are looking for a neat cutting finish, use a disc with a strong granulity, the disc will be less abrupt, will cut more neatly but slowly.

When choosing a disc to cut, you must take into account the material to be cut, the application and the budget, and thus, read its nomenclature here is an example in red on the image below.

Metal cutting disc

In this example we have a disk with the information "C60T-BF41"

C: the first letter

  • A corresponds to Corundum,
  • C to Silicon carbide,
  • Z to Zirconium,
  • Ceramic Grain CO,
  • ZA in Corindin zirconian/corundum
  • Corundum AC/silicon carbide

60 is the figure corresponding to the particle size

From 20 to 80, this figure expresses the concentration of grain. The higher it will be, the disc will allow a slow cut but with neat finish. The lower the figure, the cutting will be fast to the detriment of the finish which will be coarse.

T is the second letter of the disc to be cut

This letter classifies the disc according to its hardness, the available letters exist between M and Z. a disk M is very soft, a disk with the second letter Z is very hard. Basically, if you cut a hard metal you need a soft disc, and vice versa.

B is the penultimate letter

This penultimate letter informs us about the binder (glue that assembles the granulities) used.
M = Metal, B = Bakelite, V = Glass, R = Rubber.

F is the last letter

F indicates that the disc is stronger with a fiberglass frame. This prevents the disk from bursting. There are the letters V (vitrified) or B (resin).


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