Disc for Bulgarians on wood and rubber. Discs for grinding wood with a Bulgarian

Modern angle grinders, better known as the "Bulgarian", are used for various technological processes in construction and repair. Choosing a disc for the Bulgarian on wood and rubber, it is necessary to take into account the peculiarities not only of the instrument itself, but also of the objects being processed.

Main characteristics of cutting wheels

Depending on the material of manufacture and design features distinguish three main types of circles:

1. Abrasive disc for woodgrass, used for working with different surfaces. Depending on the thickness, the circle can be cut off and grinded.
2. A diamond disk designed to perform work with stone, concrete and other building materials. Such circles are divided into segmented and continuous. The first type due to better removal of the shovel through the slits and more efficient cooling ensures high productivity. These discs can be used for thin metal cutting.
3. The usual circle for the circular. However, it should immediately be noted that it is not recommended to use it for sawing wood products without work experience, as many cases have been known where people were seriously injured when clamping in a disk array . If possible, it is better to use another tool, such as an electric jigsaw, a chainsaw, etc., during such work.

Select a circle

When choosing grinding wheels for grinding wood with a Bulgarian, pay attention to the following points:

• The size of the circles should not exceed the maximum permissible diameter for which the Bulgarian is designed. The tool, intended for disks with a diameter of 125 mm, can not work with a cutting circle of 230 mm for a variety of reasons. Firstly, the speed of movement of the edge of the bulgarka is significantly exceeded (with a significant increase in the disk, it can simply fly apart). Secondly, to work with such a disk you need more power than the one for which a small tool is designed. Thirdly, to install such a consumable material, it is necessary to remove the protective cover, which makes the work more dangerous.
• When working with different types of materials, you should choose a disk that is designed specifically for them.
• Pay attention to the speed of the circle, which is maximum permissible (or linear speed). These figures are indicated on the surface of the circle. According to these values, it is necessary to choose the operating mode of the Bulgarian.

Outer diameter of discs

One of the important indicators of the cutting circle is its outer diameter, which is calculated in millimeters and is unified. For household purposes, as a rule, a disc for wood grinders is used 115-230 mm.

The diameter of the tool shaft (landing dimension) is practically the same on all disks - 22.2 millimeters, and special intermediate rings are used for mounting on obsolete models of Bulgarians.

The most universal is a disc for wood grinders 125 mm, 150 mm and 230 mm.

A circle of 125 mm is convenient to use when it is necessary to cut metal armature and rod.

A 150 mm wood grinder disc can not only grind and cut metal, but it can cut a bar or dissolve a board.

If the diameter is more than 230 mm, then such circles have an industrial purpose.

The 230 mm wood grinder disc has a wider field of application, as it can be used for machining metal alloy products of various grades.

Abrasive discs for Bulgarian

As mentioned earlier, abrasive wheels for grinders are divided into cut-off wheels (up to 3 mm thick) and grinding wheels (thicker). Despite the fact that the classification is very conditional, there is another significant difference between the disks: the reinforcement of cutting discs is usually carried out in 2 layers, and grinding a minimum of three.

Shape of abrasive discs

Abrasive wheels differ in their shape. Distinguish:

1. Standard flat discs.
2. Curved discs (in the form of a plate). They can be used for work in hard-to-reach places. With this form of the circle, the fixing nut is hidden, so grinding is more convenient to perform.

When purchasing a wood-burning disc, pay attention to the marking (for example, A 40 L), which allows you to find out the following information about the product:

• The first letter (or two) indicates the type of abrasive material used. For example: A - corundum, AS - electrocorundum, C - silicon carbide, which is used for works on granite and stone.
• The figures let you know the grain size of the abrasive. And the more it is bigger, the work will move faster. However, the cleanliness of the cut or grinding will deteriorate. A disk with a large grain is used, as a rule, for the processing of soft (non-ferrous) metal, and with a small one it is used for steel.
• The last letter in the marking gives an indication of the hardness of the ligament of the base of the circle (those letters that are located at the beginning of the alphabet, mean that the ligament is softer). It is recommended when buying to follow this rule - when working with soft material use a soft-clipped disc and vice versa.

Virtually all manufacturers of abrasive wheels use color marking products. Green is intended for stone, blue for work on metal. It is also worth mentioning about the inner landing ring. In circles that are designed for cutting, it is made of hard metal, and for polishing or grinding use cutting discs with a softer washer.

Diamond cutting wheels for Bulgarian

Depending on the purpose, diamond disks can be divided into several types:

1. Concrete. Circles of this type can easily cope with monolithic, including with concrete and reinforced structures.
2. Granite. Such discs are used in the work with particularly hard rocks.
3. Asphalt. Cutting wheels are best used in the processing of concrete and, accordingly, asphalt.
4. Construction Materials. Disks of this type can be used for cutting ceramics, bricks.

Diamond cutting discs of some manufacturers are also color-coded:

• Green is granite.
• Blue - concrete, marble.
• Yellow - gypsum, tile.
• Gray is ceramics.

Segmented diamond cutting discs are used for cutting materials using a dry method. When using solid discs, a wet cut (water cooling) is used. This, first of all, is associated with a very large heating of the continuous surface of the cutting wheel.

There are models that have partial segmentation. These are so-called turbodies, in which the slots are placed in the body of the circle (they do not leave the outer edge). Such products can be used at a higher speed than fully segmented ones.

So, choosing the most suitable for all parameters cutting disc for wood grinder, you can effectively and safely perform any work.

Safety regulations

When working with a Bulgarian irrespective of the type of the installed disk, it is necessary to strictly observe the safety requirements.

1. The tool must be equipped with a thrust knob and protective cover.
2. All work must be carried out in overalls and with the use of personal protective equipment. Also, it is very necessary to treat the choice of glasses or a mask very carefully, because eye damage (according to statistics, this is the most common injury) can be obtained even from small chips or a fragment of the circle itself.

Price

The cost of all cut-off wheels for Bulgar depends largely on both the model and the manufacturer's fame. For example, a diamond disc for a Bulgarian on a small diameter wood (125 mm) from a Bosch company costs at least 400 rubles. However, in spite of this, it is recommended to give preference to the proven manufacturers, since this tool is an increased danger. Therefore, on such an expendable material as a cutting disc, you should not save.