A grinder is an angle grinder, which is a universal tool. It will not be superfluous in any household, because during repair and construction work, you constantly have to grind, peel or cut something. Therefore, every owner should buy this tool, but before that it is important to decide what characteristics the equipment should have. Decide for yourself what list of operations you have to perform, you should not purchase a tool that performs much more manipulations than you specifically need, since in this case you will overpay. A grinder is that tool with which you can cut slate, metal corner and stone. With it, you can grind the weld or get rid of rust from the surface. Using this tool, the craftsman can cut ceramic products or clean wooden surfaces. To do this, it will only be necessary to change the nozzle.
General information
Before you purchase the above tool, you need to decide what materials you will most often use, what depth of cut should be provided during the work, whether you want to repair the grinders during operation. Before purchasing, you must pay attention to the weight of the tool, as professional equipment, as a rule, has a significant mass and is unlikely to be convenient for use in everyday life. After analyzing all the functions of the tool, you can choose an adequate model for yourself.
Economy Class Tool
If you need a grinder for wood, then you can choose the economy class equipment. It will cost within 1400 rubles, but for such a price you will become the owner of a tool that does not have many important parts and devices. Some models of this class do not provide adequate reliability and safety. If you use the tool quite rarely, as well as for a short time, then such a model is suitable for you. Its body is made of thin steel, but it will be able to undergo minor loads. The fastening of such a tool is carried out using a clamp with a nut and a tightening screw. It is strong enough, but it does not always guarantee convenience in operation, since there will be a need to use a screwdriver and a suitable wrench. The tool is suitable for domestic use, but the engine does not have dust protection, as a result of which small particles of the elements to be worked with will contribute to the abrasive wear of moving surfaces, and grinders may need to be repaired. Metal dust can cause a short circuit.
If you are doing construction and repair work on a commercial basis, it is recommended to purchase a more expensive and reliable model, which will have the best quality.
Middle class tool
A grinder, the price of which is 3500 rubles, refers to the tools of the middle class. Such equipment is considered convenient and safe. It has sealing inserts and a varnish coating of the rotor, which prevents the penetration of contaminants. Such machines are intended for use in domestic conditions, they are equipped with a clamping mechanism, which provides quick adjustment of the position of the protective casing. Such tools have convenient start buttons and respond to a finger pressing a brush in a rubber gauntlet. Such a grinder, reviews of which are often quite positive, has a more impressive range of functions. It can be used by a left-handed owner or a right-hander, since the handle can be screwed on one of two sides. For convenience, some models of this class allow you to install the handle on top.
Professional equipment
Repairing a grinder will most likely not come in handy if you purchase a professional tool. The mechanism of such equipment is protected from dust, and has a soft start function. This ensures a gradual increase in disk speed. That is why such a tool can even be connected to a weak electrical network. Tools of this class have vibration protection, manufacturers install on them a system for automatically balancing the working disk. The cost of such equipment can start from 4000 rubles, and the final threshold is very impressive.
Criterias of choice
A grinder is a tool that should be selected according to several criteria. The first of these is the area of use. The second thing you should pay attention to is the number of pens. For use in domestic conditions, their number may be limited to one unit. However, if you choose professional equipment, then there should be two handles. Among other things, these components of the equipment must be rubberized.
Disk size and hardware capacity
Circles for grinders can have different diameters. The minimum size is 115 millimeters. It can be used for the most simple work. The largest disk sizes are 230 millimeters. With it, it will be possible to cut bricks, pipes, plates, as well as everything that is needed. If you choose circles for the grinder, which will be used at home, then the role of the optimal diameter should be preferred 125 millimeters. If the apartment or house is being renovated, then a 180 millimeter drive should be selected. The power of the equipment can vary from 0.5 to 2.5 kW. The choice of this parameter depends on the duration of the motor - the engine power should be enough to spin the disk.
Additional functions
A grinder is a tool that sometimes has to be used for a long time. That is why it is important to take into account the presence of additional functions, among them the soft start option can be distinguished. Such a system will allow the equipment to start without jerks, this will smooth out the power surges that occur in the network. You can pay attention to the presence of automatic disk balancing. This function will be useful in case of uneven wear. The system smooths out unevenness and reduces vibration. If you get a grinder of a sufficiently high power, then it must necessarily have a function of protection against jamming. This option will prevent negative consequences in which the engine may turn off automatically. It is important that the use of such a tool is safe. For this, the equipment is provided with protection against restarting. If the current supply was stopped, and then again resumed, the grinder should not start working independently. Pay attention to the fact that the grinder has motor protection against the penetration of all kinds of particles and dust.
Conclusion
When working with this electric tool, you can not forget that long-term and frequent overloads can cause the machine to fail. Therefore, when carrying out work, it is absolutely necessary to make periodic shutdowns of the equipment motor, which will not only prevent possible overheating, but also eliminate the need for repairs. Incidentally, it can be very expensive. If you want to become the owner of high-quality equipment, no matter what class it belongs to, it is important to ask the seller whether the tool has a certificate of quality. In addition, it is necessary to take care of the warranty, as well as maintenance during the entire period of operation. Those manufacturers who are worried about their reputation give their product a fairly long warranty that protects the buyer from acquiring low-quality equipment.