Helpful information
Scope of electric screwdrivers
The electric screwdriver is a device from the family and is called so because it has the function of twisting / 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
Like any power tool, a screwdriver is divided into household and professional models. The difference here is mainly in the characteristics of power, the number of revolutions and the resource of work.
As a rule, professional models of a corded screwdriver 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-driver, it is important to take into account such an indicator as the speed of rotation of the working nozzle, 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 a screwdriver also as a drill, then you need to take into account these parameters.
Majority modern models electric screwdrivers are equipped with torque adjustment couplings. 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.
The corded drill driver can be equipped with a key or keyless chuck. In the first case, a special key is used to clamp the snap, in the second, it is clamped by means of a spring mechanism. In terms of reliability, both methods are approximately the same, but quick-clamping allows you to change equipment much faster and easier.
This question torments everyone who went to the market in search of the right tool. On the one hand, cheap 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 not clear how it will be better than an ordinary "Chinese". So who is still to shelter in his workshop?
The difference in them, of course, is not only in appearance and price. Exists whole line differences and not only technical features but also many functional details and amenities. Let's consider in more detail.
- High power and effort. 20-30 Nm is the norm for household tool, but a professional device has about 40-60 Nm and allows you to screw 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 there are aluminum liners on the household appliance, which, when heated, fold into a ram's horn.
- The mass 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, at a time when the "Chinese" are on fire, and when they please. Expensive mains screwdriver works for many hours, as 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 should be taken in any case if you are going to work constantly.
Features to pay attention to
Before choosing a screwdriver, you need to study at least its basic characteristics and understand what determines its power, functionality and durability. Now we will consider several positions that must be taken into account when choosing.
- Power. It is customary to consider it not by the engine, but by the force that is issued to the drill. In weak models, it is 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 screw anything.
- Rotational speed. It starts at 800 rpm. The best option– 1200 revolutions, 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 needed here at all.
- Turnover adjustment. It is not a pity to overpay for it. You will 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 overshooting just 2 mm in depth can break the surface.
- Tightening force adjustment. It is impossible to screw drywall without her help, because there you have to carefully and smoothly bring the hat to the paper. If the choice of a screwdriver for the home was in the direction of a powerful model, without a regulator, the screw will push through all 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 choose between similar models, give preference to the one with reverse.
- Possibility of installation of the tool with a different landing socket.
These indicators can play decisive role when choosing one tool or another. But it is better to pay attention not to 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 from can be a big dilemma. First of all, you need to pay attention to its size. Everyone would like to buy a universal device that can be reached in the most hard-to-reach places and screw or unscrew the screw, but the price is very high for a small electric screwdriver, how to choose then? Everything is simple here: 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 rises in arithmetic progression.
Electric corded screwdrivers are widely used by craftsmen and builders. Despite being limited by a power cable, the tool is excellent for driving various screws in wood, metal, drywall, as well as in assembly various designs. They are designed for both professional and home use. The main difference and advantage of networked models from rechargeable ones is that with prolonged use there is no need to replace and recharge the batteries. Plug it in and run as long as you need.
Specifications
What you should pay attention to before buying a cordless screwdriver:
- power- the performance of the tool directly depends on it. With infrequent household work, more power is useless. The tool is optimal up to 550 watts - this is more than enough for everyday tasks. For professional use for several hours a day, models with a power of over 500 watts are used;
- torque- an indicator that determines the performance, the force when wrapping. The magnitude of the moment determines the material with which the screwdriver can work, as well as the length and diameter of the fastener. As a rule, for 220V household screwdrivers, this figure is not more than 15 Nm;
- reverse- all screwdrivers are equipped with this function;
- rotational speed- the presence of a speed switch will allow a wider use of the tool, an indispensable function when drilling;
- screw-in depth adjustment.
Cartridge types
When choosing a power screwdriver, it is necessary to pay attention not only to its technical characteristics, but also to the type of cartridge. There are two types of cartridges:
- Hex chuck with magnetic holder - quick and easy bit change with one hand. If desired, drills with a hex shank can be used. Depth gauge included as standard for precise and demanding work. Electric screwdrivers with such a chuck are usually bought for professional use.
- Keyless chuck- the name speaks for itself. The bit or drill is clamped between the jaws of the cartridge 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 versatile cartridge installed on budget and professional tools.
The main feature of wired models: a 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 designed 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 places that are hard to reach from the 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 takes over
For electric screwdrivers, depending on the goal, the required spindle 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 choose a convenient mode, avoiding damage to the heads.
Many modern corded screwdrivers are equipped with a reverse function, thanks to which it is possible to unscrew the screw if the direction of screwing has been changed.
Where is the best place to buy a screwdriver from the network?
Want to quickly find the most connected to electricity? Use the tkat.ru online storefront to buy right tool in just three steps:
- Select the model you are interested in using the filters in the right panel and sort 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 an order.
