How to Correctly Install a Diamond Disc on an Angle Grinder

It is unlikely that you will find a power tool for various types of surface treatment, which would not need nozzles, the purpose of which you need to know, so it does not hurt to study thoroughly cutting wheels for angle grinder and their characteristics. In particular, carefully study the disks for processing different types of materials, the ratio of the power of an angle grinder and the diameter of the nozzle, in a word, be prepared to change the nozzles, which are consumables.

What are the cutting wheels for an angle grinder?

First of all, let’s decide what kind of work the angle grinder is doing. The list is quite limited: polishing metal, stone, concrete, tile, brick and wood, as well as cutting all of the listed materials except wood. Some craftsmen claim that cutting wheels for an angle grinder also exist under a tree, you can hear allegations that such disks have been used for more than a dozen years. Maybe so, but most masters know that a saw blade on an angle grinder for wood is a consumable made without standards and life-threatening.

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In general, angle grinder attachments are classified as abrasive, diamond and polishing. The first ones grind as they work, decreasing in diameter, since they are made entirely of abrasive chips, the disk for an angle grinder on stone is all-metal: small particles of industrial diamond are applied along the edge. Polishing can be of two types: in the form of a ready-made version, with a fabric coating, or it can be a metal disk, to which Velcro is glued.

Diamond blade for angle grinder and its purpose

Quite a lot of information about the disk can be found out only by looking at it, since many manufacturers use color stickers as markings. For example, if you see a predominance of blue, it means that most likely the disk is abrasive, for metal, green indicates circles for cutting concrete. As for the first, it is perfect for grinding and cutting, it all depends on the hardness of bonding of the abrasive and the material of the included fractions.

Video: How to Correctly Install a Diamond Disc on an Angle Grinder


All relevant information can be found in the alphanumeric markings. For example, “A” will mean that the basic composition of the edged disc is artificial corundum. The letter "C" is placed on the silicon carbide nozzles. The numbers nearby indicate the size of the grains, large numbers indicate the cutting of ferrous metal, and those that are smaller. non-ferrous, the finest fractions are used when cutting steel. Nearby is indicated and the maximum speed of rotation, as well as the size of the discs on the angle grinder.

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At the end of the marking line is often a letter indicating the degree of adhesion of grains, the closer to the end of the alphabet, the stronger the bond.

As for diamond-coated wheels, there are practically no signs on them, except for an arrow indicating the direction of rotation, as well as size numbers. Well, how much the disk suits you can be determined by its appearance. In total, a diamond blade for a detachable angle grinder has three different options: a solid disk or "crown", turbo disc and segmented.

Most distinguished segment and "turbo". The first is a flap diamond wheel for an angle grinder, divided along the edge into separate segments by narrow slots designed to remove dust and better cooling. For the same purpose, grooves are made on the plane of the solid disk along the edge. "Turbo" is equipped with through lateral slots indented from the edge, oriented in the direction of rotation. A solid circle is best for wet cutting of stone and tile, turbo and blade for dry.

How to remove a disk from an angle grinder and replace it with another?

Therefore, it is better to know how to remove the disk from the angle grinder, and not the casing. The kit for an electromechanical tool should include a special key that fits the grooves of the nut fixing nozzle. However, this is bad luck, the axis on which the disc is mounted rotates freely, and the question hangs in the air, how to change the disc for an angle grinder. Everything is simple. there is a special button on the typewriter, by pressing which you can fix the axis, after which we unscrew the nut counterclockwise.

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By the way, try not to wait until the abrasive nozzle grinds to this very nut, change earlier. The disk is mounted on the angle grinder in the reverse order, that is, first we put it on the axis, then press it with a nut and turn the special key clockwise. The disk must be equipped with a metal rim of the hole, this is additional protection against breakage during rotation.

how to install a diamond blade on an angle grinder