How to choose a balgarka - important features

January 08, 2021

The main criterion for choosing a grinder is for what purposes and how often you will use the power tool. Depending on the intensity of use, all angle grinders can be divided into three classes:

Household - this type of grinder is intended for performing various tasks at home and for infrequent use. This is a small (up to 1000 W) power electric tool, the engine of which is not designed for long-term, continuous operation. Due to engine heating, the device may automatically turn off. An important advantage of the grinder is that it is very compact, has a small (on average up to 2 kg) weight, which makes it convenient to work with it, even in hard-to-reach places.
Professional - a very productive and powerful angle grinder (up to 2000 W), designed for continuous and long-term use. To increase the tool's operating time, various engine cooling options are used (ventilation, the use of special materials with increased heat transfer), as well as high-quality special materials, etc. Professional angle grinders have greater weight and dimensions, and the vast majority are two-handed models;
Semi- professional - in terms of characteristics, they occupy an intermediate position between household and professional models. Sufficiently powerful (up to 1500 W) models can be used for long-term operation.

Disk size

The main characteristic of a grinder , which determines how deep a cut can be made . The minimum size of the cutting disc is 115 mm (can be used to cut material up to 30 mm thick), the largest is 230 mm. The most popular sizes of grinder discs are:
125 mm - the most popular size used in household and professional tools. A 125 mm disc grinder is very light, which can be safely used with just one hand. Thanks to its mobility, it is perfect for most household tasks.

150 and 180 mm - a compromise option if cornering Grinding is needed for both cutting (especially when cutting pipes) and grinding;
230 mm - the maximum diameter of the grinder discs . As a rule, these are very powerful models with which you can cut: pipes, bricks, concrete, but grinding with such a tool is not very convenient, because due to its heavy weight, its mobility is limited.

In addition, there are several other factors to consider:

The quality of the cut with a thin disc is better than with a thick blade. But at the same time, a thin disc is not suitable for deep, long cuts, because due to friction, the disc will wear out very quickly. Therefore, its thickness is selected based on the depth of the cut.
The larger the diameter of the circle, the lower the speed at which the grinder should operate. Wide (230 mm) discs are designed for a rotation frequency of no more than 6.6 thousand revolutions, medium (180 mm) - no more than 8.5 thousand revolutions, small (115 - 125 mm) - up to 11 thousand revolutions per minute.

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