It would seem that there is no fundamental difference in electric screwdrivers, except for the manufacturer's name on the product body. Over the past few decades, no revolutionary technology has been invented. Except perhaps one. The brushless screwdriver has gained popularity due to its wide functionality and mobility. Due to the absence of dependence on a power source, it can be used to solve many construction problems.
Brushless motors: a word on modern technology
First of all, speaking about what a screwdriver is, it should be noted that this device is a reliable assistant in various situations. Thanks to its versatility, time is significantly saved and efforts are reduced to perform such works as:
- disassembly and assembly of furniture structures;
- screwing in fasteners;
- installation work;
- organization of carving.
In addition, the tool can be used as a construction mixer for mixing paint, various putties or glue. Absolutely any minor repairs that involve the use of screws or nuts can be performed in a matter of seconds using the presented device.
Along with the development of semiconductor electrical devices, the understanding came that collectors and brushes must be eradicated in a screwdriver motor. In such a motor, an electronic amplifier acts as an excellent replacement for mechanical contact switching. An electronic sensor determines the rotor angle and monitors the semiconductor switches. By eliminating sliding contacts, friction is significantly reduced and at the same time the service life of the units is increased.
Brushless motors provide the ultimate in device performance and minimal exposure to mechanical wear. In comparison with collector options, the engines of the presented type are endowed with the following advantages:
- higher torque;
- increased degree of reliability;
- reduced level of emitted noise;
- long service life.
It is interesting! The power of a screwdriver equipped with a similar motor often does not exceed 5 kW. It is simply irrational to use it in equipment with a higher power.In addition, magnets in their design are sensitive to magnetic fields and high temperature readings.
A very important characteristic is that the internals of the brushless screwdriver motor can be completely closed, thus protecting them from dust and moisture. Due to this, not only does the safety during operation of the device significantly increase, but also increases its service life.
When using the presented type of motor, the need to use a commutator and a winding disappears. The magnet in this design is compact and lightweight.
In this case, the speed level depends on the voltage and not on the centrifugal force. In this case, the operation of the motor occurs in the selected mode. Even in the event of a current leakage or magnetization, such a unit does not reduce performance, and the rotation speed corresponds to the torque. By converting electricity into mechanical force, brushless screwdrivers are characterized by excellent efficiency.
Brushless screwdriver: pros and cons of the unit
Speaking about the advantages and disadvantages of brushless screwdrivers, it is worth noting that the efficiency of brushless units is significantly higher and is close to 90%. For comparison: for a competing option, this figure hardly reaches 60%.
Note! This indicates that for equal battery capacity The brushless tool will last much longer on a single charge, which is extremely important if the charging source is far away.
The advantages of screwdrivers that do not have brushes include:
- Ease of speed regulation. At the same time, users get the opportunity to adjust this indicator in the widest range - it all depends on the characteristics of the work performed.
- Due to the absence of a collector-brush assembly, the tool is practically not susceptible to related breakdowns if used correctly. In addition, this makes the maintenance of the device easy.
- The device copes much better with the substantial load that is associated with increased torque.
- Battery power consumption is as economical as possible.
- The brushless screwdriver motor allows the device to be used in a hazardous environment, which is characterized by the presence of gas mixtures. This feature is due to the absence of sparking.
- Light weight and miniature size.
- Regardless of the direction of work, the maintenance of a single capacity is ensured.
- Even if the load increases, the speed does not decrease.
As for the disadvantages, the presented tools have only one. They have a higher cost than their collector competitors. At the same time, the high price of a screwdriver is easily justified by the advantages of the technology. The more demanding a product is, the more arguments for a brushless device are. Perhaps, for a tool used at home, the cost is really high. If we talk about which screwdriver is better - brush or brushless for professionals, the choice is obvious.
How to choose a quality screwdriver
The presented equipment is characterized by unsurpassed efficiency, but users are often stopped by its cost. Since absolutely any, even the most expensive, devices are not insured against breakdowns, most users prefer budget Chinese options.However, if you want to purchase a unit that will serve for a long time, you should take into account the basic selection criteria that you need to rely on.
In the design of brushless tools, chucks can be keyless or hexagonal, with a shank diameter of ¼ inch. In the first case, changing the tooling is easier and faster, however, another type of chuck has many advantages.
Note! In this regard, it is better to focus on the diameter. Since the versatility of the device depends on this indicator, you need to understand: the larger it is, the better.
An equally important criterion is the number of revolutions. If you do not plan to use the tool on an ongoing basis, but you only have to assemble furniture, for example, a unit with this indicator equal to about 500 rpm will be enough. Such a product cannot be used as a drill, and if this function is nevertheless necessary, it is better to give preference to a tool whose number of revolutions is not less than 1300 rpm.
The selection of the battery also plays an important role. Today, there are units on the market with various types of batteries:
- Nickel-metal hydride variants are characterized by excellent resistance to mechanical stress, but they discharge quite quickly.
- Nickel-cadmium devices are quickly powered by energy and can be used at low air temperatures, but their disadvantage is also fast discharge.
- Lithium-ion batteries are characterized by compactness, low weight, do not tend to discharge quickly, but low temperatures are contraindicated for them.
Users should also pay attention to torque, as this is where the ultimate rotational force and speed depend. This indicator, which is in the range of 16-25 N / m, refers to the average. For professional devices, it often ranges from 40 to 60 N / m, and for the most expensive products - up to 150 N / m.
Due to the presence of an impact function, the device can be used as a drill without harming the screwdriver. The advantage of this option is that it allows you to easily create holes even in dense materials.
Brushless screwdriver: rating of products from world manufacturers
Today, screwdrivers are very popular in the construction industry. It is worth noting the equipment that has earned the special respect of many users around the world. Bosch, Metabo, Pit, Stanley brushless screwdrivers are the pride of the electric tool market. Reliability, efficiency and comfort are the main tenets of their work.
Bosch GSR 18 V-EC. Expensive, reliable and of high quality - this is how you can describe the brushless drill-driver presented by the German company. Thanks to the compact motor, the cordless tool has characteristics that put it on the same level as a cordless tool. It is the brushless technology that allows the presented model to function on a heavy surface without the risk of quickly discharging the battery.
As far as the body of the Bosch brushless screwdriver goes, it does not exceed the dimensions of the battery. The advantages of the presented model are:
- powerful torque with soft level adjustment function;
- mechanical transition between two gear stages;
- Supplied with two high power batteries in addition to the brushless motor.
It is interesting! In addition, this model of Bosch brushless screwdriver is characterized by a rich package.A case, an insert for it, as well as a magnetic holder for bits - everything is provided here to create comfort during work.
DeWalt DW263K. It is a powerful and reliable unit presented by a famous American brand. The model operates from a standard 220 V outlet. The proprietary screwdriver motor is capable of developing power up to 540 watts, while the torque reaches 14.5 N / m, which meets the highest professional criteria.
Note! The presented model is capable of quickly and sufficiently tightly tightening screws and bolts, including large parts.
This tool will easily cope with woodworking, and will also become an excellent assistant in the process of installing metal structures.
Additional benefits of the Dewalt brushless screwdriver also include:
- possibility of long-term work under conditions of increased load;
- screwing depth adjustment function, which is provided thanks to the head included in the kit;
- the possibility of smooth regulation of the number of revolutions;
- the presence of a powerful motor with overheating protection.
In addition, the product is supplied in a special case, which guarantees ease of carrying.
The functionality of this power tool. Types of accumulators. The most popular models, their characteristics.
Metabo Powermaxx BS Basic is the pride of the German company. Impresses users with its performance and power. Despite the compactness, the clamping level is the highest - this figure is 36 N / m. The mini-device is able to work daily for many hours - on a par with professional models.
The Metabo brushless screwdriver has the following advantages:
- high clamping rate;
- the presence of a flashlight;
- smooth set of speed;
- the possibility of both drilling and screwing in, as well as unscrewing bolts and screws.
In addition, this tool is very comfortable in the hand and does not slip. Thanks to the ability to adjust the torque in one of more than twenty positions, it becomes possible to perform drilling of materials of different degrees of hardness.
Stanley SBH20S2K. The impact device with a brushless type of motor can be used for both standard tasks and for drilling holes in stone, brick and concrete. This model is equipped with a durable battery, which is endowed with protection against overheating and overcharging.
As for the rest of the useful functions of the Stanley brushless screwdriver, it is worth highlighting among them:
- long-term operation on one battery charge;
- the presence of 23 modes of rotation;
- the presence of a backlight function;
- batteries do not tend to discharge on their own;
- the gearbox consists of durable and wear-resistant gears.
The presented model is recommended for those users who do not want to pay extra for a famous brand and are looking for a truly powerful device with an ideal ratio of cost and quality level. This product can be entrusted with absolutely any task with which it will brilliantly cope - from tightening small screws to drilling with any drill.
BISON DAI-18-2-Li KNM4. The ZUBR brushless screwdriver is intended for drilling holes in a variety of materials, and is also used for screwing in and out screws, screws and screws. Thanks to modern technology, the dimensions and weight of the tool have been significantly reduced. Improved controllers help extend battery life.The presence of an electronic brake, reverse, spindle blocking function, the ability to charge in just 60 minutes made the process of using this product as convenient and efficient as possible.
A feature of this device is the use of 18 volt li-ion technology in the BISON brushless screwdriver. It was thanks to her that the level of performance of the device increased by 35%, the product received an electronic system of protection against overload, heating and discharge, and it also does not tend to lose power during its operation.
P.I.T PSR 18 D1. The PIT brushless screwdriver is a modern model equipped with an illuminated working area for comfortable operation in low visibility conditions.
The features of the presented model are:
- good ventilation to remove excess heat from the engine;
- lack of self-discharge and memory effect;
- the presence of 18 positions for the torque switch;
- reverse function;
- lightness and compactness;
- the presence of a two-stage gearbox.
Thanks to the two-speed mode, it is easy and simple to drill holes and turn screws. However, the scope of delivery for the PIT brushless screwdriver includes several battery packs so that work can be performed continuously.
The presented rating of brushless screwdrivers includes devices that are resistant to breakage, equipped with motors with excellent protection and are indispensable helpers both in everyday life and in industrial conditions.
Makita brushless screwdriver: the Japanese leader
Models LXDT06, LXDT08 DF332DWAX1 are the real pride of the Japanese company. But first things first.
LXDT06 opens the rating of devices of the land of the rising sun. The unit with an 18-volt motor is characterized by the presence of a speed control switch, as well as three power levels and a system called Quick Shift, which allows for the fastest possible speed adjustments.
It is interesting! When this mode is activated, the maximum rpm and the maximum possible power are set by default. At the end of the screwing process, the system reduces the rotation speed, which allows you to control the tightening of the fasteners.
Thus, you can start working at an increased speed, since there is simply no point in using another mode. By reducing the speed at the end, the likelihood of damage to the screw head, bit or part to be machined is significantly reduced.
The LXDT06 outperforms all existing brushless impact drivers in performance. Its advantage over the best models of competing companies is considered to be its shorter length. In addition, the device is equipped with a built-in flashlight that perfectly illuminates the working area. It is positioned in such a way that the shadow cast by the tool is completely negligible. This significantly increases comfort and convenience during work.
Speaking of the LXDT06, it should be noted that the device is ergonomic and compact, due to which it fits perfectly in the hand. Despite the fact that its battery is not much larger than that of peers from other companies, it boasts a higher power, which means a longer battery life.
If anyone has doubts about which is better - a brush or brushless screwdriver, the LXDT06 model will certainly dispel them. The impact unit is characterized by high power and compactness at the same time. There are no special innovations here, but they are not needed at all.The characteristics of this device will delight even professionals, not to mention amateurs who have more than enough power that this device has.
Compact and at the same time quite powerful - this is how the DF332DWAX1 can be characterized. The brushless screwdriver presented by a Japanese company is an excellent solution for drilling wood and metal surfaces. Not too high voltage is more than compensated for by the highest efficiency of the presented model.
The engine of the unit is manufactured in accordance with brushless technology, which guarantees power, serviceability and compactness. The presented device is equipped with two batteries, which are protected from overload and are equipped with a built-in indicator showing the discharge.
Based on the above characteristics, we can safely say that the Japanese company does not intend to give up its positions in the market for tools with brushless motors. It was she who began their implementation, after which she was the first to offer users a speed control system, and at the moment she demonstrates a mechanism for automatic speed reduction.
High power, quality and easy to use - it's all about the Makita brushless screwdriver. Such a tool will turn the execution of routine construction tasks into an easier and more efficient process.
Having precisely determined which is better - an impact or a shockless screwdriver, you can start the buying process. In this case, you should pay special attention to the additional functions offered by the manufacturer. It is better to opt for a tool that assumes the ability to control not only the speed of rotation, but also its direction.
In addition to the optimal price-quality ratio of screwdrivers, their options are important, such as a backlight, an indicator that notifies about the charge level, as well as a number of other useful functions, thanks to which the operation becomes as comfortable as possible. And if there is a second battery, a case for convenient transportation, charging and a set of accessories, such a unit will certainly deserve the attention of users.