Grinder for concrete - types and features of choice

As a rule, after pouring concrete, the surface is uneven. To eliminate this disadvantage, apply such a time-consuming treatment as grinding. For these purposes, use a special tool - this can be a small manual grinder for concrete or a professional large-sized machine.

Next, we consider in detail what types of grinders are and what you should pay attention to when choosing a tool.

Types of grinders

To date, the market offers a large selection of similar equipment of various types.

However, all existing grinding machines differ in two ways:

• Destination.
• Type of construction.

Next, consider in detail all these types.

Type of appointment

So, all grinding machines are primarily divided by type of destination.

They are:

• Household - used for short work, as they have little power. This tool is not designed for heavy loads. Therefore, when using, the instructions from the manufacturer must be strictly observed. The advantages of such devices include low cost and low weight.
• Professional - used for intensive and long-term work. Such machines have much more power and can be used for a long time. As a rule, they are endowed with additional accessories by the manufacturer. Of course, the price of professional cars is higher. In addition, they consume more energy and are less convenient to use, since they have greater weight and dimensions.

  

• To level the screed - unlike the above described devices, these machines are designed exclusively for leveling concrete floors.. With their help, it is convenient to rub seams and eliminate other defects on the surface of the screed. Machines of this class have a dust collector or they have the ability to connect a vacuum cleaner, in addition, they can perform both dry and wet grinding.
• For grinding stone - can be used not only for concrete, but also asphalt concrete or even stone surfaces. In such machines the possibility of using metal brushes is provided.

Type of construction

In fact, all grinding machines for concrete are divided into two types:

• Corner - in the people such a tool is called grinders. Corner typewriter while working with their own hands. With their help, you can perform grinding of all types of surfaces.
• In the form of a platform on the rollers - are more powerful devices that are designed for grinding horizontal surfaces.

Angle machines are good because they are more versatile. However, such devices are not so convenient and effective in those cases when it is necessary to process a horizontal surface of a large area.

Note! When working with a grinding device, regardless of its type, it is necessary to observe safety precautions - wear glasses, do not remove the protective cover from the grinder, and also be extremely careful and cautious.

What to look for when choosing a tool

When choosing a grinding machine, there are a number of points that need to be paid attention to. Next we look at the main ones.

Power

From this parameter depends on the performance of the tool, as powerful machines can work longer continuously. However, as mentioned above, they cost more, weigh more and are more energy-intensive.

Power шлифовальных машин колеблется в пределах 600-3000 Вт. Не всегда имеет смысл приобретать мощный инструмент, к примеру, для небольших объемов работ «по дому», достаточно будет болгарки для шлифования бетона мощностью 600-1000 Вт. Если же планируется обрабатывать большие площади, то понадобится более мощная шлифовальная машина для бетона–1500 - 2000 Вт.

Maximum disc diameter

The area of ​​the treated surface depends on this parameter. If a Bulgarian is acquired, which will be used for different purposes, for example, it is planned to cut reinforced concrete with diamond circles, then the maximum cutting depth will depend on their diameter.

All discs are divided by diameter into three types:

• Small - 150 mm
• Medium - 150 - 200 mm
• Large - 250 mm.

Spindle thread

The size and thread of the spindle depends on which disks the device can work with. The most common is the size of M14. However, you can find on sale and models that have spindle size M16.

It should also be borne in mind that the labeling of different manufacturers is different. There are no uniform standards.

Working area

The speed and convenience of processing depends on the size of the working area. The larger the working surface, the less, respectively, will have to spend time and effort on surface treatment.

In concrete sanding machines, the working surface is interconnected with the maximum disc diameter.

Equipment

When choosing a tool, it is imperative to pay attention to the additional equipment, since the ease of use and versatility of the device depend on it.

Additional equipment includes:

• Handle - helps reduce vibration and properly distribute the force when working with the tool. In some models, the handle is rigidly fixed, and in some - it can be adjusted.
• The system of stabilization of revolutions - is able to fix a certain frequency required by the operator, regardless of the applied load on the instrument. This system allows you to maintain the performance of the device in the process.

• Dust collector - as it is easy to guess, this option is to collect the dust formed as a result of polishing. As a rule, a concrete polishing machine has an airtight container or bag that can be embedded in the housing or removable.
• Smooth adjustment of speed - with the help of this function, you can configure the device to work with different materials, not only with concrete.
• Battery operation - this option is important when you have to do work in the absence of electricity. Such cars are especially convenient for the household purposes when their short use is required. True, the disadvantages include the high cost of batteries and limited uninterrupted work time.

• Water supply - thanks to this option, the device can be connected to a water source, as a result of which liquid will be sprayed onto the working area. This will reduce dust levels and increase the time of continuous operation of the device. This function has almost all professional machines.
• Lock the start button - increases the security of the device, as it prevents the possibility of accidentally starting the device. In addition, this option allows you to hold the device in the on state, which makes the tool more convenient, since you do not have to hold the button in a long time.

Tip! In addition to grinding, it may be necessary to make a hole in it when working with concrete. In this case, the most effective way to perform this operation is diamond drilling of holes in concrete.

Manufacturer

When choosing a manufacturer, of course, it is better to give preference to well-known, well-proven brands.

These include:

• Bosch;
• Makita;
• Stern;
• AEG and others

To perform everyday tasks, you can pay attention to the tools from such manufacturers as:

• Sparky;
• Einhell;
• Proton and others

Tip! You need to purchase tools in large stores, where you will be provided with high-quality warranty service.

Here, perhaps, all the main points that you need to know when buying a grinding machine.

Conclusion

As we found out, the grinder for concrete can be of various kinds. Therefore, before you go to the store and proceed to the selection, you should decide what tasks will be assigned to it.

Thus, you can choose the most convenient and productive tool. From the video in this article, you can get additional information on this topic.