Helpful information
Scope of application of electric screwdrivers
An electric screwdriver is a device from the family and is called so because it has the function of tightening/unscrewing screws and self-tapping screws. This function is due to the ability to set reduced speed on the tool.
Types and varieties of drills and screwdrivers
Like any power tool, a screwdriver is divided into household and professional models. The difference here is mainly in the power characteristics, number of revolutions and operating life.
As a rule, professional models of corded screwdrivers can easily cope with the functions of drills, successfully working with materials such as wood, plastic, metal, etc.
Features and characteristics of electric screwdrivers
When choosing an electric drill-screwdriver, it is important to take into account such an indicator as the rotation speed of the working attachment, which is of paramount importance. A speed of 400–500 revolutions per minute (rpm) is optimal for tightening various fasteners (screws and self-tapping screws). But for drilling you need at least 1200-1300 rpm. Therefore, if you plan to use the screwdriver also as a drill, then you need to take these parameters into account.
Majority modern models Electric screwdrivers are equipped with torque adjustment clutches. The number of modes varies from 5 to 23. The rotation speed is also regulated by the force of pressing the start button, which is a kind of two-speed gearbox that allows you to optimally use the capabilities of the tool.
A corded drill/driver can be equipped with a key or keyless chuck. In the first case, a special key is used to clamp the equipment; in the second, it is clamped using a spring mechanism. In terms of reliability, both methods are approximately the same, but the quick-clamping method allows you to change equipment much faster and easier.
This question torments everyone who has gone to the market in search of the right tool. On the one hand, inexpensive household appliance which is a little larger size and has excellent specifications, on the other side of the scale is a professional screwdriver, which costs a lot of money and it is unclear how it will be better than an ordinary “Chinese” one. So who should you host in your workshop?
The difference between them, of course, is not only appearance and price. Exists whole line differences and not only that technical features, but also many functional details and amenities. Let's take a closer look.
- High power and effort. 20-30 Nm is the norm for household tools, but a professional device has about 40-60 Nm and allows you to tighten a screw 12-15 centimeters into a pine board.
- The durability of the device is ensured by the presence of copper and brass bushings on the electric motor, while the household appliance has aluminum bushings that, when heated, curl into a ram's horn.
- The weight of the device differs significantly due to the use of modern engines and gearboxes made of titanium and light alloys.
- Overheat protection. It is present in an expensive device, while the “Chinese” are on fire, and whenever they want. Expensive corded screwdriver lasts for many hours because the cooling system is designed for intensive use.
A professional-grade corded drill/driver will allow you to work a lot, constantly and under heavy loads. It cools down in a few minutes and charges 2 times faster conventional drill, but replaceable batteries must be taken in any case if you are going to work constantly.
Features to look out for
Before choosing a screwdriver, you need to study at least its basic characteristics and understand what its power, functionality and durability depend on. Now we will look at several positions that must be taken into account when choosing.
- Power. It is customary to calculate it not by the engine, but precisely by the force that is exerted on the drill. In weak models it is equal to 20 Nm. This is quite enough for working with drywall, as well as other soft materials. 40 Nm is enough for loose wood and a 10 cm screw, and 60 Nm are professional models that can be used to screw anything.
- Rotational speed. It starts at 800 rpm. The best option– 1200 rpm, since 1800, as with some models, this is already too much. An electric drill/driver should have good power, and rotation at the speed of the mixer is not necessary here at all.
- Speed adjustment. I don't mind paying extra for it. You'll have to add about 400 rubles to the base model for such an improvement, but it's worth it, especially when working with decorative materials, where overdoing just 2 mm in depth can break the surface.
- Adjusting the tightening force. It is impossible to properly screw drywall without its help, since you have to carefully and smoothly bring the hat to the paper. If the choice of a screwdriver for your home was in the direction of a powerful model, without a regulator the screw will push through all the materials.
- Reverse. Very useful thing, especially if you inserted the drill into the chuck - it’s good to pull it out if it jams. If you don’t know which screwdriver to choose for your home and are choosing between similar models, give preference to the one with reverse.
- Possibility of installing tools with different mounting sockets.
These indicators can play decisive role when choosing a particular tool. But it’s better to pay attention to non-technical characteristics, since they are much more important than functionality and can play a decisive role in many types of work.
Comfort and appearance
No matter how similar all corded screwdrivers are, which one to choose can become a big dilemma. First of all, you need to pay attention to its size. Everyone would like to buy a universal device that can reach the most hard to reach places and tighten or unscrew the screw, but the price is very high for a small electric screwdriver, how to choose then? Everything is simple here: you buy the most ergonomic device for which you have enough money. As a rule, the smaller its size, the more expensive it is, and with every 100 grams the price increases in arithmetic progression.
Electric corded screwdrivers are widely used by craftsmen and builders. Although limited by a power cord, the tool is great for driving a variety of screws into wood, metal, drywall, and for assembling various designs. They are intended for both professional and household use. The main difference and advantage of networked models from rechargeable ones is that during long-term use there is no need to replace or recharge batteries. Plug it in and work as long as needed.
Specifications
What you should pay attention to before purchasing a corded screwdriver:
- power- the performance of the tool directly depends on it. For infrequent household work, high power is not needed. A tool up to 550 watts is optimal - this is more than enough for everyday tasks. For professional use models with a power of over 500 watts are used for several hours a day;
- torque- an indicator that determines performance, force when wrapping. The magnitude of the torque determines the material the screwdriver can work with, as well as the length and diameter of the fastener. As a rule, for 220V household screwdrivers this figure is no more than 15 Nm;
- reverse- all screwdrivers are equipped with this function;
- rotational speed- the presence of a speed switch will allow you to use the tool more widely, an indispensable function when drilling;
- screw depth adjustment.
Types of cartridges
When choosing a corded screwdriver, you need to pay attention not only to its technical characteristics, but also to the type of chuck. There are two types of cartridges:
- Hex chuck with magnetic holder - quick and easy bit change with one hand. If desired, you can use hex shank drills. The standard package includes a depth limiter for precise and demanding work. Electric screwdrivers with this chuck are usually purchased for professional use.
- Keyless chuck- the name speaks for itself. The bit or drill is clamped between the jaws of the chuck and is easily tightened by hand. The main difference from the hexagonal version is the ability to use drills. This is the most common and universal chuck installed on budget and professional tools.
The main feature of wired models: cheaper price with the same power and performance. Often these corded tools offer even better performance than their cordless counterparts. It is for this reason that electric models are most often intended for professional use. However, these drills also have some limitations. Since they can only be used near an electrical point, the cord makes it difficult to work in areas that are difficult to reach from an outlet. But, on the other hand, the absence of a battery makes the case smaller and lighter, which is a big plus for many professional builders and repairmen.
Electricity gets to work
With electric screwdrivers, depending on the purpose, the required spindle rotation speed is selected. average speed devices of this type reaches 750 rpm. In addition, such a tool allows you to set the torque and thus select a convenient mode, avoiding damage to the heads.
Many modern corded screwdrivers are equipped with a reverse function, thanks to which you can unscrew the screw if the direction of screwing has been changed.
Where is the best place to buy a screwdriver from the network?
Do you want to quickly find the one with the most electrical connection? Use the tkat.ru online storefront to buy the right tool in just three steps:
- Select the model you are interested in using the filters in the right panel and sorting products by price, popularity or name.
- Choose an online store that sells screwdrivers at the best price.
- Go to the website of the selected online store and place your order.
