In order for the work to be performed as efficiently as possible, you need to use a good tool. Let's find out how to choose a cordless screwdriver , which company is better, and what kind of device professionals prefer.
Platform is an important detail
No, not even the most important one. The platform is one of the most important criteria by which it is recommended to select this hand tool. This parameter can be found out if you find out the battery voltage. Today, there are about 4 main platforms. Each brand, which produces an electrical or battery tool works with any one platform.
Choosing a platform means finding a compromise between the real mass and power of the device. You will understand which is better to choose a cordless screwdriver.
Available platforms
So, tools operating at a voltage of 18 V are somewhat average. The magnitude of the voltage allows you to achieve good torque up to 100 Nm, and the weight will be quite light. At this voltage, most models for professionals are created, as well as some representatives of the amateur group.
24-V platform is mainly used to create the highest quality and most expensive equipment. It is a powerful engine, less sensitive to overloads, failure-free operation and increased working life. Which cordless screwdriver is better? It all depends on the needs and the work that will have to be done.
Models designed for 12 and 14 V are a lot of amateur devices.
Here, compactness and lightness have a much higher priority than high power, high performance, service life. It must be said that often on this stress some series of tools for professionals from market leaders can be distinguished. If you plan to use this device frequently and seriously, then your choice is a professional cordless screwdriver. Which is better to choose from the entire available variety of models depends on some requirements. But do not flatter yourself too much. Such "bison", such as "Bosch" or "Makita", position their devices as equipment for professionals, but any representative on this platform will not be able to screw a 120-mm self-tapping screw into dense wood.
Batteries
These amateur and professional assistants can be powered by Ni-Cd or Ni-Mh batteries. Ordinary lithium-ion batteries are also often used. The first two batteries are even more common due to the low price, storage capabilities in a discharged state, and also work at low temperatures.
Ni-Mh batteries slowly drain. This is noticeable when compared with more capacious Ni-Cd.
But the price of such batteries is more expensive. But in charge-discharge cycles, they are noticeably weaker. Up to 700 cycles are allowed here.
Cordless screwdriver - which is better? Reviews say that standard Li-ion batteries have virtually no flaws. Here we observe a short charging time, there is also no loss of charge when idle. Among the advantages, one can also distinguish higher capacities, lack of memory, and operating times. Prices are also fully consistent with high performance. Such a battery will cost from 3 to 8 thousand.
Gearbox
To choose a cordless screwdriver (which is best for you), it’s useful to know some important characteristics. So, one of the important indicators is the frequency of revolutions. By the number of revolutions, all devices can be divided into two classes - cordless drills and a direct screwdriver for installation work. The rotational speeds in screwdrivers are small - about 400-500 rpm, but the torque is quite high.
Manufacturers recommend using them for twisting. However, modern installation technologies include not only fasteners, but also drilling.
Drill, fasten, cut the thread
To activate the drilling mode, many devices from reputable brands have a special flip frame. It switches the operating modes of the gearbox. In drilling mode, the speed doubles. Also, the torque will be halved. Drilling is less common, but the presence of such a regime is one tool instead of two. There is also a three-speed cordless screwdriver, which copes better with threading with taps. Here you can get even lower rotational speed, and the torque will be huge.
Planetary gearboxes
These devices use planetary gearboxes. Often in such designs you can find three satellites. The carrier is rigidly attached to the crown, it has a lower gear. If the device is capable of delivering up to 25 Nm of torque, then the gear unit is predominantly plastic. With a torque of up to 50 Nm, manufacturers allow a plastic case. If it is a powerful tool designed for professional use, the gearbox consists only of metal parts. Choosing a cordless screwdriver, which is better - not hard to guess. Metal parts have a much higher durability and a confident service life.
Safety clutch
This system allows you to adjust the torque. It is not possible to use the device as well as a torque wrench , and the scale is only conditional. However, if manufacturers provide data on the dependence of efforts on the position of the regulator, then this tool can be taken into account.
By design, this part is a ratchet in the outer gear of the gearbox. It is additionally tightened by an annular spring. One end of it is connected to the body of the device. The second is connected to the rotating handle of the cartridge. To choose a cordless screwdriver, which is better, reviews do not need to be excluded. So, users write about weak points - this is wire rod and the spring itself. It is made of substandard materials and after some time of intensive use it loses its characteristics.
Ergonomics
The convenience of using a hand tool is more than just comfort. Many manufacturers of these devices are constantly trying to constantly improve ergonomics. There are many different forms of housing, materials for linings. Many devices differ in the distribution of weight, the location of the controls. So, a cordless screwdriver, which is better, you need to choose according to the hand of the master and the type of work that you have to do. It is best to choose a screwdriver that is convenient in every sense, even if you have to pay for it with other characteristics.
One of the important ergonomic parameters is the angle between the axis of the handle and the axis of the motor. Designers, creating, in their opinion, comfortable equipment, sometimes make the angle of inclination of the handle too large. Because of this, it is not always convenient to use the tool. The palms become numb or over-stressed by the masters, and a callus appears between the thumb and forefinger. You need to switch the side of rotation with one hand, this has to be done quite often. Which cordless screwdriver is better? Reviews will help determine, but it is best if you yourself make your choice in your own hands. Also, it will not be superfluous to verify the excellent balancing of the selected instrument.
The choice for the specifics of work
It may seem that a screwdriver is a universal tool. In fact this is not true.
So, for those who assemble furniture, more compact models are suitable. They are convenient in that you can work even in the most inaccessible places, and the effort and torque are enough for a reliable and high-quality assembly. The drilling mode is practically not used here. So, for drilling, a more powerful cordless screwdriver is purchased. Which is better? Makita provides a wide selection of professional tools at a very affordable price. Screwdrivers of this company have high characteristics and are very convenient.
Also, these tools are used for the installation of drywall structures. Here, manufacturers offer two-speed models with a capacious battery. The weight of the tool is very critical for this type of work. For work on the ceiling, models with a single speed are suitable without a collet-based cartridge.
In special installation work, power is important. Therefore, they choose a cordless screwdriver, which is better for additional functions. Consumers want the device to replace both the rotary hammer and drill.
Brands and models
We examined the design, important selection criteria for these tools. Now let's analyze the most popular models from all that is offered on the market today.
Interskol
When choosing a tool such as a cordless screwdriver (which is better), Interskol is ready to offer several lines of devices. These are screwdrivers for professionals and amateur-level devices for the home.
The professional line is distinguished by the presence of two speeds, a capacious battery, high torque. Nickel-cadmium batteries allow the device to work offline for a very long time. Torque in various models can reach 30 Nm. The devices are durable, practical and infinitely convenient. Light weight models will make working with them more enjoyable. Interskol is a worthy cordless screwdriver. Which is better - reviews will help with the choice. In general, people talk about the technology of this manufacturer very positively.
Bosch
The first model on our list is a great home acquisition. He is in the green, unprofessional line of the entire instrument from Bosch.
German or Russian cordless screwdriver - which is better? Reviews about the first are very good. The parameters of this device can cover all the needs of a home master and can even give odds to some professional equipment. "Bosch PSR 1200" is, first of all, compact sizes. Then, power characteristics are striking. The battery is capable of producing 12 volts, and the force is 15 Nm. In addition to size and strength, this is a fairly functional device. It is possible to adjust the torque, block the device from turning it on independently. The reverse makes working with the device very pleasant at all. If you are looking for a cordless screwdriver, which is better for home, then the Bosch PSR 1200 is a great choice.
Also on the market is a professional tool. This is a blue product line.
The Bosch GSR 18V model is the dream of those involved in furniture, namely its professional assembly and disassembly. This is a reliable and powerful German-made screwdriver. It is ideal where space is limited. Among other advantages, this device has a capacious battery. The powerful planetary gearbox in this model is capable of delivering up to 67 Nm of torque. If you choose a cordless screwdriver, which is better, the Bosch GSR 18V is the choice of professionals.
Bosch GSR 1440 is a professional two-speed model from the blue product line.
The advantage of the model is its price. The planetary gear allows you to create a force of 30 km. The overload protection system allows you to increase the durability of the work.
So you have learned how to choose a cordless screwdriver. Which company is better? Each company offers several worthy rulers. Choose your model.