Features and tips for choosing pneumatic grinders

Electric tools are widely used in repair and construction. But in some cases it is either very inconvenient or impossible to connect it. Then you have to use alternative solutions, one of which will now be discussed.

Pneumatic grinder with the proper skill, it allows you to confidently cut and grind:

• metal sheets;
• bricks (separate and in the form of masonry);
• hardened concrete;
• various pipes;
• steel billets;
• ceramic tiles.

During processing, the tool is capable of:

• clean out scale and other contaminants from the weld;
• remove rust;
• polish any metal, any building stone;
• polish various surfaces;
• remove layers of paints that are difficult to remove manually.

Regardless of the specific model, the following are provided:

• motors pushed by compressed air;
• rotors;
• levers that start the mechanism;
• conical pairs;
• flanges and nuts for them.

To start the grinder, you need to press the lever. Under the influence of the air flow entering the motor, the rotor will spin up. The transmission device will begin to move after it. It rotates the shaft, on which the abrasive wheel is already mounted. When the lever is released, the air flow stops immediately, and then the tool stops working.

The main thing in this choice is the exact determination of the mass and size of the "grinder". By increasing these indicators, engineers achieve increased functionality from their product. But the flip side of this success is less ease of use. For the simplest household purposes, you can completely limit yourself to a 115 mm grinder.

In most cases, UShM-125 is used. Such a tool is functional enough so that you do not need to use additional devices. At the same time, it is also not too heavy. Of no small importance for many consumers is the fact that grinders with a 125 mm disc are relatively inexpensive. But if you plan to cut something solid, you need 180 mm circles.

With such equipment, you can safely take on any construction and repair work. The "Bulgarian" will not care about thick steel pipes and brickwork.

The most powerful tools are equipped with 230 mm discs. They can handle even the hardest workpieces and building structures very easily. But the problem is that such a tool is not suitable for grinding.

It is important to make sure when choosing that the device is not too heavy and will be comfortable to use. It is worth trying the grip in various ways, working at shoulder level. It is very good if the tool is equipped with vibration-reducing handles. The differences between specific brands should also be kept in mind.Pneumatic angle grinders are supplied by different manufacturers, however, the products of the German concern Bosch deservedly occupy the first lines in various ratings.

In a second, up to 15 liters of air passes through the "grinder" of this company. The equipment is selected individually. It is determined taking into account the range of work required and the variety of materials. The cheapest models cost about 1000 rubles. But their quality is unlikely to satisfy the consumer.

Models from leading companies are sold for at least 3000-4000 rubles. However, the increased rate is fully justified. Personal safety requirements say that the angle grinder must be equipped with a reliable casing. It will cover the operator from sparks and metal splinters, from various debris. A useful option, according to professionals, is the supply of water to cool the disc. If this function is present, a longer service life of the mechanism is guaranteed. In addition, the frequency and duration of work breaks is reduced.

In addition to Bosch grinders, you can safely choose products from Hitachi and DeWalt. We must also remember that the air flow is created by the compressor. A significant role is played by what its performance is, which limits the maximum throughput of the acquired angle grinder.

Metabo DW 125 Quick can serve as an example of UShM-125. It is designed for a pressure of 6.14 atm. At the same time, up to 500 liters of air passes through the "grinder" in a minute. A device weighing 2 kg creates a noise of 97 dB during operation. Such indicators allow you to navigate when choosing - similar devices should be at least no worse.

How to choose the right grinder, see below.