Battery grinder: necessary information about the tool
Angle grinders (USM) have long been a truly indispensable device. The first copies of compact products in the former Soviet Union were produced in Bulgaria. That is why nowadays it is increasingly possible to find the name “Bulgarian”. Next, the main properties and features that characterize the battery grinder will be considered.
Bulgarian “Makita”: answers to the most frequent questions
Domestic consumers have long loved the cars presented by Makita. This manufacturer has long been among the first ranks of world leaders in the manufacture of tools for construction. The highest quality, excellent operational parameters, the strictest observance of guarantees – all these advantages the Japanese company has won for a century of its activity.
Makita angle grinders are quite multifunctional devices. Speaking about what the Bulgarian of this company is needed for, it is worth noting that it allows you to saw and grind tiles, brick walls, concrete blocks, metal products and other hard materials. The Makita USM can be used both in the process of work related to dismantling, and during cleaning of various surfaces.
It’s interesting! Many masters are wondering how the Bulgarian is called correctly. So, the correct name of the tool is an angle grinder, or USM for short.
Regardless of the model, each battery-powered Bulgarian “Makita” has the following advantages:
- a significant margin of power;
- effective limitation of the inrush current;
- the ability to set the desired number of revolutions;
- the possibility of replacing the nozzle without using a key;
- the presence of the option of smooth adjustment of the rotation speed.
In addition, Japanese specialists have managed to develop many original innovations. For the purpose of maximum protection, the battery battery “Makita” is equipped with a special bag for collecting dust. And thanks to perfectly compatible adapters, you can even connect to a vacuum cleaner.
As for the shortcomings, the devices of this company have not been found. In order to understand which machine to give preference to, you should carefully familiarize yourself with the different models of the battery grinder (user reviews will help you make the right choice).
Bulgarian on the battery: the main secrets of popularity
One of the most important features of the battery-powered USM is the possibility of completely autonomous operation. This means that it is not necessary to lay a cable from the outlets of the electrical network. In the country, in the forest, on construction sites – you can use this tool anywhere.
Pay attention! An important advantage of the wireless grinder is the high safety in the process of its application. By giving preference to this tool, you can completely protect yourself from electric shock, as well as get the opportunity to perform work in rooms with high humidity.
Thanks to the simple design of the grinder on the battery, reviews about this tool are often the most positive. Despite the fact that each apartment has electrical outlets, in hard-to-reach areas such a grinder is characterized by much greater convenience than an electric tool that is connected via a cord. Replacement batteries are charged from sockets.
Reasoning about which Bulgarian is better, we can safely say that it is rechargeable. Its main advantage is portability. Such a tool is characterized by compactness and lightness. In comparison with products powered by mains, battery options emit much less noise during operation.
Another undoubted advantage of tools with a battery is the insignificant power of the Bulgarians. The electric motors they are equipped with operate at fairly high speeds. Due to this, it is possible to work with small disks with no less efficiency than when using large elements. The increased rotation speed gives accuracy to the processed material, while eliminating the possibility of scratches.
One of the most common questions that arise after purchasing a device comes down to how to use a grinder. If possible, you can connect a charging device to any of the nearest outlets, which is equipped with a grinder.
Important! During the operation of the USM, it is always necessary to correctly install a special casing that performs a protective function. It will not only reliably protect the material that can be processed from sparks and particles, but also protect it from fragments if the disk bursts during operation.
If the device is equipped with an option to adjust the rotation speed, the best solution would be to use the maximum possible for a particular disk. During cutting, it is better to feed extremely smoothly and without excessive pressure. In case of tool misalignment, the incision will be uneven, and the disk may also succumb to destruction.
If it is necessary to perform rough grinding, if you need to remove a significant layer of material, it is better to give preference to a stripping disc. The tool must be kept at a slight inclination to the surface. It should be checked that there are no deep grooves on the material that can be processed. In no case can cutting discs be used to carry out stripping. They are too thin and break even with the smallest lateral bends.
If a long stream of sparks was noticed during operation of the diamond disc, this indicates that the device is blunted. You can fix this by making several slots with this disk in any of the solid materials. If the sparks form a solid ring, it means that there has been complete wear of the surface, and it is impossible to do without replacing the disk here.
Rechargeable USM: rating of the best models
To get an approximate idea of the varieties of battery–powered grinders, we offer an approximate rating of Bulgarians of various costs – from the cheapest options to expensive professional ones.
Anchor Accu Master AKM-1825
The handmade product of the Anchor company is an inexpensive, but rather high-quality device. Its design is characterized by simplicity. The standard kit includes:
- side handle;
- multiple battery packs;
- the key of the spindle nut.
There is no special indicator on the batteries themselves or on the charging device. The charging process takes quite a long time, which causes some inconvenience. As for the engine, in this model it is quite weak, it quickly overheats. If it is required to perform grinding of “heavy” materials characterized by viscosity, this device will not work at all.
Having certain disadvantages, Akku Master is significantly cheaper in comparison with its competitors. In addition, not every expensive unit can boast of such compactness.
Battery grinder “Metabo WB 18 LTX BL 125 Quick”
The specialization of the German company “Metabo” is the production of a productive and reliable tool that is created for true professionals. The machine of this model is equipped with lithium batteries, which are manufactured using a special technology called LiHD. Such batteries are capable of giving off quite a lot of power. The batteries are equipped with an overload protection system, as well as an option to control the degree of heating and display the charging level.
It’s interesting! Thanks to the special design of the batteries and the use of a brushless mechanism, it became possible to form a unit characterized by high power and reliability.
The design of the presented machine is distinguished by unsurpassed thoughtfulness. The cooling channels are equipped with special filters, which can be easily cleaned and changed without resorting to total disassembly of the product.
The handle, located in the front, is equipped with an anti-vibration insert. Thanks to the spindle brake, the disc can be stopped in a matter of seconds. The discs can be easily changed without additional accessories. The casing with a protective function is fixed by means of a convenient key and can be easily rotated to the desired position.
Despite the fact that this device has a high cost, its excellent power and exceptional reliability fully justify the monetary investment.
Battery grinder Ryobi One+ R18AG-0
The Japanese company “Ryobi” in Europe has gained fame as a supplier of inexpensive, but at the same time very high-quality tools. The presented model belongs to the budget. Its peculiarity boils down to the fact that it can function both from modern lithium batteries and from batteries that were assembled from cadmium-nickel parts. They are weaker in comparison with lithium, but at the same time they differ significantly in lower cost.
Japanese designers provided all the necessary elements for the convenience and safety of operation of the device. The case, made in a form convenient for holding, is equipped with a non-slip rubber coating. On the gear housing, in addition to three sockets for installing the handle in various positions, there is also a heel. You can install a typewriter on it in such a way that the disk will be directed upwards and at the same time will not be subject to breakage. Thanks to the spindle lock, the disc replacement process is significantly accelerated.
Attachments for the grinder: a variety of tools for the ear
Classification by material and purpose. Cutting, stripping and grinding devices. Stroborez nozzle. Bulgarian for a chainsaw.
As for the diameter of the tool used, it is limited to a value of 115 mm. For a compact and lightweight device, this is only an advantage. Thus, the consumer is given the opportunity to appreciate authentic Japanese quality at a pleasant price.
USM Hitachi G14DSL: representative of the middle class
Having many features of a professional product, the presented Japanese machine is characterized by a simpler design.
The rechargeable lithium battery, whose voltage is 14 volts, has a capacity of 3 ampere-hours. This ensures long-term operation without replacing the battery. The set of this grinder contains a very fast charger that fully charges the device within an hour. In addition, the grinding machine kit includes an additional battery pack.
It’s interesting! The tool is mounted on the spindle by means of a flange shaped nut. And although it is not very convenient, in the case of use at home, it is not so important.
The machine itself is characterized by convenience and compactness. The elongated body is covered with a special anti-slip compound and completely covers the battery. At the same time, the length of the body does not reach even 30 centimeters. By locking the spindle, the disc replacement process is greatly simplified.
Bulgarian “Bosch”: German quality, time-tested
In the line of popular construction devices, a separate position belongs to angle grinders, which are used both in everyday life and in the professional field. The German brand Bosch is one of the well-known manufacturers that produce such products and have earned the trust of consumers around the world.
Battery grinder “Bosch”: main features
Perhaps the most common series of Bosch products is the GWS line. The company presents to consumers both electric and pneumatic, as well as battery units. To date, the devices that work at the expense of batteries have earned the most respect. This is not surprising, because they differ in mobility, allowing you to perform small professional work.
It’s interesting! The basic criteria for the quality of tools of this brand are power, comfort during operation and ergonomics of the case. This is evidenced by the positive feedback from the owners of grinding machines.
Among the distinctive features of the USM of this brand are the optional features that the manufacturer has decided to endow its products with. These include:
- balancing the tool;
- vibration protection during operation;
- the presence of a rotary bracket-handle;
- the presence of a casing for a vacuum cleaner;
- the presence of the SDS nut.
To date, there are two types of machines on the market – one- and two-handed.
Bulgarian rechargeable Bosch: advantages and disadvantages
The tool offered by Bosch differs in personal characteristics. Among their advantages are:
- high degree of reliability;
- powerful and high-performance engines;
- convenience in the process of application;
- light weight;
- affordable cost;
The secret of long-term operation is the presence of a gear housing and ball bearings made of high-strength materials. In addition, the nodes are characterized by a double level of sealing, which helps to reduce the risk of premature wear of parts.
Pay attention! Despite the significant advantages, the Bosch rechargeable battery is not without its drawbacks. Devices that belong to professional ones are characterized by high cost.
Mini-Bulgarian: although small, but very remote
The key feature of mini-Bulgarians is a large number of their modifications. Because of this, it can be quite difficult to choose a specific model. The main difference between a miniature USM and a large grinder is the size of the disc.
Mini-grinders differ in the following parameters:
- degrees of engine power;
- the frequency of revolutions;
Dimensions represent the main difference between small devices and classic machines. Mini-sizes assume a standard configuration of the grinder with a set of necessary elements. Thanks to various grinding or cutting wheels and complementary parts, the capabilities of the device are only expanding.
Due to the versatility of small machines, it is possible to perform various tasks with a high degree of accuracy. The mini-unit is able to cope with jewelry work, while classic devices simply cannot do it.
Despite the fact that a rechargeable mini-grinder and a regular-sized tool are equipped with similar functions, it is worth noting that the first device is endowed with many positive qualities. For example, a small unit is easier to hold in your hand. The employee will not suffer from physical fatigue during long operations.
Mini-guns do not even assume the presence of a protective rim. However, no one has canceled compliance with safety rules. Regardless of the dimensions of the device, the technical requirements are mandatory.
Pay attention! Some consider mini-products to be very unreliable precisely due to the lack of details characteristic of a conventional tool. However, the danger lies in the use of circles of incorrect size. They can cause injuries in case of negligence in the process of their selection.
Due to the absence of an electric cable, working with a grinder turns into a very convenient process. Speaking of which grinder to choose, 125 mm (meaning the size of the circles) is an excellent option. However, when choosing the dimensions of the tool, it is also important to take into account the processing material. For example, when working with metal, it is better to give preference to disks of a minimum size. At the same time, the wood grinder can be equipped with larger parts.
Battery grinder: a few words about possible malfunctions
Armed with knowledge about the design features of the USM, it will be easy enough to determine the basic malfunctions that can be encountered during the work. For example, problems with an electric motor do not always cause a total malfunction of the device. Often this only limits the functionality.
Perhaps the most common nuisance is the burnout of the resistor resistance, which provokes the inactivity of the power button. By the way, not all models are equipped with this element. However, the malfunction can be easily eliminated by replacing the elements that are the cause of the malfunction. A similar problem may arise due to dust getting under the holder. This can be fixed by cleaning the contacts and, if necessary, replacing the button with a new one.
In general, all malfunctions that can befall this tool (grinder) are divided into two types:
- electrical character;
- mechanical plan.
The term mechanical problems refers to the wear of bearings. This problem is manifested by increased vibration of the housing, excessive noise and heating.
To eliminate it, you will only need to remove the parts, replace them and lubricate them with an additional tool. In appearance, it is easy to determine the failure of the gear teeth. This can be fixed by replacing the gear.
Pay attention! Most mechanical problems can be easily avoided by servicing the tool in a timely manner. For example, grinding machines require the cleaning of nodes, as well as the replacement of lubricants and damaged elements.
As for electrical malfunctions, rotating elements in the electric motor often fail in tools. If we are not talking about a brushless grinder, you can also face such a nuisance as the wear of brushes, collector or gearbox.
Replacement of brushes is required if excessive sparking is observed inside the body of the working device. Normally, it is smooth or invisible. The anchor of the mini-product breaks due to the heavy load. Typical manifestations of the malfunction are fumes, sparking and heating of the housing. As for the repair of this electrical part, it is better to trust professionals.
How to choose a grinder for home: the main secrets
Thinking about which grinder to choose for the house, it should be borne in mind that the right choice will require the ability to perform analysis and comparison. The main parameter of the tool is the idling speed indicator. This is what is an indicator of power. Thus, powerful models are characterized by greater performance.
Due to the fact that the grinders are equipped with additional options, the decision on which to choose a grinder becomes more complicated. On the other hand, thanks to additional elements, the process of processing materials becomes easier.
For example, automatic locking of circles helps to eliminate irregularities in the grinding and cutting process caused by vibration caused by worn discs. With the help of the inrush current limitation mode, the stable operation of the tool is ensured at the usual indicators of the standard electrical network.
The attachment, represented by an optional handle, makes the cutting process much easier. Without it, you will need to exert strong physical pressure. Additional convenience is provided by a special coating, which helps to reduce the vibration force. Due to this, it is possible to process materials with the highest accuracy.
Pay attention! With a disk of optimal size, it is more convenient to make neat cuts. For example, circles with minimal indicators are used for a curly operation. The neater and finer the work, the smaller the disk size should be.
If we are talking about which grinder to choose for the house, it should be taken into account that the best option would be a product with a diameter of 125 mm discs. The size of this element determines how deep the incision will be. The optimal thickness of the circle is in the range from 1 to 1.2 mm.
When choosing a tool, it is important to remember that the best grinders are devices that are convenient to use. The tasks that have been set are important. For example, connoisseurs of lightness and compactness will like battery products, and it will not be possible to do without large ears if you have to cut a thick metal profile or viscous materials.