Angle grinder, which is popularly called a grinder, is a universal tool with which you can perform a list of works: cutting, grinding, cleaning metal, wood, stone and other materials. This tool has found its application in industry. It is ideal for both professional repair work and household chores.
Now on the market there are a large number of different models of Bulgarian intended for home or professional use. The latest grinders with speed control are equipped with special nozzles of any size, characterized by the presence of descent fuses and additional functions. With all the variety of models and sizes, grinders have a common task, which is to facilitate the person’s workflow as much as possible and save time.
Which grinder to choose? Household and professional tools
When buying a grinder, you should consider such indicators as rotation speed, power, the presence of additional functions and disk sizes.
Indispensable in everyday life are angle grinders. These are ordinary grinders, which are compact in size and demanding on the operating mode. After 10-15 minutes of operation, the owner of a conventional grinding machine is forced to take a mandatory break to prevent its overheating. Household grinders are not intended for daily use. Their technical indicators are much lower than that of professional devices that can be used for a long time without fear of overheating. In addition, professional angle grinders are equipped with brass inserts and a metal housing. This is due to the fact that they have to be used in extreme conditions: laying pipelines, earthwork, etc. For such an environment requires a tool that is as much as possible protected from dust and moisture.
Universal angle grinders
Universal are considered grinders with speed control. These machines are ideal for jobs such as cutting, grinding and polishing any materials.
Grinders with speed control and soft start are mainly used in those cases when it is necessary to polish stone or wooden surfaces. This is due to the structural features of these materials, the processing of which at high speeds is undesirable, as it leads to the destruction of the surface and rapid wear of the nozzles.
The best manufacturers of grinders
Angle grinders are produced by domestic and foreign companies. High results were achieved by the German manufacturer Bosch, Japanese Hitachi and Makita. Mostly they produce models for professional use: grinders with speed control, power exceeding 1200 watts, and various disk diameters. Angle grinders make it possible to carry out any kind of complex work. Using special diamond blades, it is possible to cut concrete and stone, to cook walls under wire. The presence of an additional side handle provides control over a powerful power tool during its operation.
Bosch: Model GWS 850 CE
The Bosch grinders with speed control and an output of 850 watts are ideal for grinding with diamond cups of natural and artificial stone. This angle grinder is one of the most popular electronic tools in the work of professional stonecutters, who every day face the need to polish in places where granite or marble are cut. This grinder has a low weight, which greatly facilitates operation: the master can hold it with one hand.
Bosch GWS 850 CE speed-controlled grinders are guaranteed for one year of professional use.
You can adjust the grinding speed using six positions. The rotation speed range of grinding nozzles and discs is from 2, 800 to 11, 000 rpm.
The quality of polishing directly depends on the speed of rotation of the nozzles. The smaller it is, the higher the quality of work. This requirement applies to granite, marble, glass and other surfaces that can be operated with a grinding tool equipped with an adjustment function. To work with marble surfaces, experts recommend a choice of speed at which the grinder produces 2800 revolutions. Wooden surfaces can be treated with special nozzles at the highest speeds. The maximum speed for this grinder is 11, 000 revolutions.
Bosch GWS 850 CE comes with a key, handle and two mounting washers for discs and nozzles.
Nozzles for polishing work
The quality of polishing work depends on the adjustable speed and correctly selected nozzles. For grinding marble and granite surfaces by experienced engravers who work with stone professionally, flexible diamond blades are recommended. For wood, an emery petal circle is suitable. For polishing metal products and surfaces, it is best to use circles containing felt or felt, which is attached to the nozzles with a special Velcro. Felt nozzles are also suitable for polishing glass. But in this case, you need to purchase a special diamond paste. Painted or varnished surfaces must be treated with lamb wool tips.
Household angle grinder Makita GA5030
Grinder "Makita" with speed control is considered one of the best models of household grinding angle machines. Its price is 2500 rubles. The Makita GA5030 has a low weight that does not exceed 1.8 kg, which is an advantage of this tool compared to other similar models in this price category.
The design of the grinder is characterized by high build quality and is equipped with a speed adjustment function, which makes it possible to use the GA5030 Makita for all types of work: cutting, grinding and polishing. Numerous positive customer reviews indicate that the Makita GA5030 model has low vibration during operation, and the additional handle included with the tool greatly simplifies the operation process. Despite all the advantages of a grinder, its owner should remember that this angle grinder (angle grinder) belongs to the category of household grinders, which means that breaks should be taken periodically during operation.
Professional angle grinder Makita 9565Cv
Angle grinder Bulgarian “Makita” 125 mm speed control provides the implementation of any kind of work at speeds from 2800 to 11000 rpm. Makita 9565Cv requires a 125 mm diameter drive and 220 volt power. Power consumption of angle grinders - 1400 watts. A 125 mm grinder with a speed control of 9565Cv is a professional power tool, the design of which contains:
- adjustment of rotation speed, which makes it possible to optimize the operating mode. The spindle receives a certain speed necessary for a specific task: cutting, grinding or grinding;
- power button lock. This is important to ensure safety during operation, especially in cases of unplanned power outages (turning off the light, pulling the plug out of the socket). Thanks to the secondary start-up fuse, the owner of the Makita 9565Cv is protected against arbitrary activation of the grinder and does not risk injury;
- double isolation;
- speed stabilization system, which, due to changes in disk loads, facilitates the process of working with massive labor-intensive parts;
- two-position side handle, which ensures reliable holding of the power tool during operation. A convenient version of the handle performs an anti-vibration function.
UShM 9565Cv is a Bulgarian Makita 125 with speed control and smooth descent, due to which the power tool is protected from critical overloads at the time of switching on. A soft start protects the angle grinder system and the numerous parts contained in it (disk, winding, engine brushes) from a strong voltage surge. Turnovers are typed smoothly, the grinder does not tremble in the hands.
How to choose the required disk size?
For angle grinders, discs with a diameter of 115 to 230 mm are intended. Working is the part that extends beyond the apparatus. Nozzles tend to wear off during use. Disks with a diameter of 115 mm quickly wear out and are suitable for cutting products with a thickness of not more than 3 cm. Moreover, this diameter is unsuitable for working in hard-to-reach places. For such operations, 180-230 mm discs are better suited.
Metabo WEV 10-125 Quick
This is another grinder with a speed control. 125 mm is considered the optimum disk size for the Metabo WEV 10-125 Quick. Among all the well-known 125-mm angle grinders, this model is considered the best in terms of power. It features a wide range of adjustment of spindle speeds and a constant speed under the influence of a variable load. This is provided by built-in electronics, which protects the angle grinder engine from overloads and produces a smooth start-up of the system. The grinder has an automatic safety clutch and corner brushes that turn off in the event that a voltage suddenly disappears. This is important for safety during operation of a powerful angle grinder.
Metabo angle grinder WEV 10-125 Quick is a grinder with 125 mm revolutions adjustment, overheating indicators, automatic coupling, long power cable, stabilizer and quick-tightening nut. According to customer reviews, this angle grinder has no drawbacks and is widely used for various types of work. This is one of the best models of the company.
Hitachi G13SS
This Japanese-made angle grinder is characterized by average performance of the main parameters. Nevertheless, the grinder is very comfortable, ergonomic and relatively inexpensive. Scopes of angle grinder G13SS - car service, construction and production. Power tools can easily cut metal and grind any surfaces. The weight of the grinder and a narrow grip allow you to hold it with one hand in any position. This angle grinder is considered a power tool designed for professional use. According to consumer reviews, the Japanese G13SS is very convenient for work. The only drawback of this grinder is its low power.
The ergonomic shape of the model, the presence of a removable handle in its design, which allows it to be installed on any side, the ease of replacing carbon brushes are advantages for Hitachi G13SS that have already been appreciated by many users.
