All about the union screwdrivers

Rechargeable batteries

Rechargeable batteries also have their own parameters.

Voltage (3.6 to 36 volts), which determines the power of the electric motor, the amount of torque and the duration of operation. For a screwdriver, the average numbers showing the voltage are 10, 12, 14, 18 volts.

For instruments of the P. I. T. brand these indicators are similar:

1. PSR 18-D1 - 18 in;
2. PSR 14.4-D1 - 14.4 in;
3. PSR 12-D - 12 volts.

But there are models in which the voltage is 20-24 volts: drills-screwdrivers P. I. T. PSR 20-C2 and P. I. T. PSR 24-D1. Thus, the tool voltage can be found from the full model name.

• The capacity of the battery has an impact on the operating time of the tool and is 1.3 - 6 Amperes per hour (Ah).
• They differ in type: nickel-cadmium (Ni-Cd), nickel-metal hydride (Ni-Mh), lithium-ion (Li-ion). If the tool will not be used often, then it makes sense to purchase Ni-Cd and Ni-Mh batteries. This will save money and extend the life of the screwdriver. All P. I. T. models have a modern type of battery - lithium-ion. Let's talk about it in more detail.

Li-ion cannot be fully discharged, it cannot be stored for a long time and does not tolerate low temperatures

Therefore, when buying such a battery, be sure to pay attention to the production date. Without use, the battery does not discharge, has a high capacity

All these qualities have made such a power source optimal for many consumers.

Why do you need a screwdriver?

A screwdriver is a hand-held power tool that has a torque adjustment required for twisting / unscrewing various kinds of hardware, as well as for drilling holes. The scope of the device is very wide: installation / dismantling of various structures and equipment, assembly or repair of cars, furniture production, household chores, etc. The scope of use can be significantly expanded depending on the category to which the tool belongs. A professional drill driver can be used not only for its intended purpose.

How else can you use screwdrivers:

• for surface grinding;
• as a mixer when mixing building mixtures;
• for drilling holes in ice;
• when threading and tying reinforcing bars;
• for cutting materials;
• as a chopper;
• for twisting wires.

The device of screwdrivers of different types is quite similar. The main elements of the tool:

• frame;
• cartridge;
• start button;
• adjusting the direction of rotation of the shaft;
• regulators of the number of revolutions and the degree of tightening.

The chuck of the power tool can be a universal quick-clamping (three-jaw) or a turnkey fit

The second option is distinguished by a more reliable clamping of the nozzle (this is especially important when drilling), using the quick-clamping mechanism, you can very quickly change the equipment

Varieties of tools

The scope of use of screwdrivers is largely determined by which category they belong to: a professional tool or a household one. When deciding on the choice of a model, you need to correctly assess the purpose of using the tool and the possible scope of work.

Types of screwdrivers:

1. Household devices are great for carrying out repair work at home or in the country, they allow you to install a fence, assemble furniture, hang cabinets, etc. Quite modest indicators in terms of power and torque are quite enough for such operations. But household screwdrivers are also quite democratic.
2. More productive technology is able to tighten heavy-duty fasteners and drill through material.It can be operated for a long time, most often it is equipped with a quick-change nozzle system, speed control and a brushless motor with a higher efficiency and compact size. The torque of the professional tool can be up to 130 Nm.

Some models are capable of replacing a drill, which allows you to optimize the number of power tools in your household.

Depending on the method of supplying power, screwdrivers can be divided into two classes:

• rechargeable batteries, powered by the accumulated battery charge;
• network, which are connected to the outlet by means of an electric wire.

The first option is more convenient where there are problems with connecting to the mains, since it is autonomous. However, there is a limitation on the operating time of the power tool: it depends on the charge of the battery. Most often, battery models are more expensive than their counterparts tied to an electrical outlet.

The mains screwdriver does not need to be charged, it can be operated from the mains as long as required. However, for its use, it is necessary to have a supplied electricity. In addition, the wire limits mobility and prevents the master from moving freely. But when carrying out long-term work, this option of devices is optimal.

Another difference is that the power unit of the network model operates at an alternating voltage of 220 V, and the motor of battery analogs operates at a constant voltage (its value is usually in the range of 3.5 ... 36 V).

The principle of operation of the tool does not depend on their type. Electricity from the mains or battery makes the engine run. From it, through the gearbox and the shaft, the force and speed are transmitted to the nozzle fixed in the chuck, which performs drilling or mounting / dismounting of hardware.

Advantages and disadvantages

Soyuz brand cordless and cordless screwdrivers have their pros and cons. The advantages of the equipment include its affordable price. The tool of other brands (as a rule, better known) costs 2-3 times more, but does not differ in technical characteristics.

Other advantages of the equipment include its extensive range. The company manufactures network models and devices with various types of batteries. Lithium-ion or nickel-cadmium batteries are used as a power source. Thanks to a wide selection, everyone will be able to purchase a suitable model for themselves.

Other advantages of screwdrivers include the following characteristics.

• Reliable, lightweight and shockproof housing. In the production of the Soyuz tool, the manufacturer uses high-quality materials, thereby increasing the mechanical stability of the devices. It has been experimentally revealed that the equipment retains its performance when dropped onto a hard surface from a height of up to two meters.
• The presence of a charge indicator on some battery models. It provides more convenient operation - the master will always see the remaining charge and will be able to plan the work.
• Support for additional functions. Most models support a reversing option, otherwise known as reversing. By activating the function, you can quickly unscrew the self-tapping screw or pull out a stuck drill. Other important options include multiple operating modes, instant chuck stop and work area illumination.
• Rubberized equipment handles reduce vibration and provide a secure grip on the device.
• Stylish design.
• A good package. The tool comes with a sturdy case for storing and transporting the device, a safety strap and a set of bits.

Soyuz screwdrivers do an excellent job with household chores. This is confirmed by numerous reviews of the owners. According to them, the tool is notable for its lightness, ease of use, power, long battery life.The disadvantages of consumers include insufficient clamping of the bit in the cartridge, poor stability of the device and inaccurate readings of the charge indicator. As you can see, the disadvantages are not so significant. In general, Soyuz screwdrivers are reliable and durable equipment that can facilitate the work of a home craftsman.

Photo of screwdrivers

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The best inexpensive cordless drills-screwdrivers: up to 1500 rubles.

At such a price, it is difficult to find very powerful models on the market, mainly their limit is 400 watts. Problems can also arise with the drilling diameter, you can count on a maximum of 2.5 cm (for wood). There will hardly be many speeds here either, one or two is the ceiling. But otherwise it is a very good tool for non-professional use.

Diold ESh-0.26N

Not the most powerful tool, it consumes a maximum of 260 watts, but this is enough for working with wood and metal. Just one speed is not impressive, so the process takes a lot of time. The drilling diameter ranges from 0.1 to 2.5 cm, depending on the type of material. With this in mind, the speed control is provided, which at maximum idle cannot exceed 800 rpm. She is not afraid of the clamping in the drill material due to the presence of a reverse. Suitable for screws up to 6 mm in diameter. The product is protected from accidental activation by a lock button.

Advantages:

• Long cord;
• Low price;
• Lightweight and small;
• Takes both wood and steel.

Disadvantages:

• The factory wire needs to be changed over time;
• After a certain period of time, replacement of the power plug is often required;
• Heats up quickly and cools down for a long time;
• Not suitable for difficult jobs.

Cost - 1100 rubles.

Assessment on a 5-point scale: 4.6.

Stavr DShS-10 / 400-2S

This is the best cordless drill / driver for home use, but for professionals, the 400W power will make it feel weak. Compared to the same Diold ESh-0.26N, the drill rotates faster, with a frequency of 1000 rpm. High-quality and convenient operation is ensured by smooth speed control, which allows screwing in screws without kinks. The device can be called universal, it drills both wood and metal with a diameter of 25 mm and 10 mm, respectively. Thanks to the certainly not short network cable, you can work without carrying, because its length is 3 m.

The manufacturer has equipped the product with a reverse and electronic speed control, although many reviews indicate that it does not work entirely correctly. Weighing 1.3 kg, the model is quite compact and easy to use.

Advantages:

• Cheap;
• Does not depend on batteries;
• Good power;
• Lightweight;
• Fits comfortably in the hand;
• The cord is long enough.

Disadvantages:

• Poorly cleaned;
• Light, quickly gets dirty;
• In the first months, the sheath of the cord may burst at the point of entry into the body;
• Plastic smells unpleasant;
• Poor engine airflow;
• There is no backlight, although the manufacturer refers to it.

Cost - 1380 rubles.

Assessment on a 5-point scale: 4.7.

Here you can download the operation manual Stavr DShS-10 / 400-2C

Bison ZSSH-300-2

This is a cordless drill / driver of medium power (300 W), light weight (1.6 kg) and small dimensions. There is everything here to do the job efficiently and without discomfort - a limiting clutch, multi-stage and adjustable torque, convenient for a screwdriver, a keyless chuck, a long cable (5 m) and speed control

The focus should be on two speeds, to switch between which there is a button on the body. You shouldn't expect much from this device, the maximum number of revolutions is 400 per minute, but this is quite enough for performing simple tasks

Advantages:

• Long warranty (up to 5 years);
• Several speeds;
• Long cable;
• Many stages of torque;
• Easily accessible gear selector.

Disadvantages:

• The light body gets dirty quickly;
• Not the most powerful;
• Sometimes there is a defect in the form of a chuck crackle during operation;
• In rare cases, the chuck will jam.

Assessment on a 5-point scale: 4.6.

Here you can find instructions on how to use Bison ZSSH-300-2.

Interskol DSh-10 / 320E2

• Rated power - 320 W;
• Maximum diameter:
• Holes in wood - 25 mm;
• Holes in metal - 10 mm;
• Screws - 6 mm;
• Idle speed:
• 1 speed - from 0 to 450 rpm;
• 2nd speed - from 0 to 1800 rpm;
• Maximum torque - 35 N * m;
• Network cable length - 2 m;
• Weight - 1.4 kg.

Interskol DSh-10 / 320E2 is another Russian-made screwdriver. Model
belongs to the category of professional grade instruments. The screwdriver is equipped with
keyless chuck, designed for attachments with a diameter of 0.8 to 10 mm.
There is a torque limiting clutch that allows you to set the required
tightening force of fasteners.

Two-speed gearbox, which allows you to select the optimal rotation speed,
made of metal. The absence of plastic elements guarantees
long service life of the unit. The mechanical switch itself is located in
top of the case.

Special electronic system ensures smooth speed change
spindle rotation. For continuous continuous operation there is a button
circuit breaker interlocks.

It should be noted that the design provides for the possibility of quick replacement
brushes, which simplifies the process of servicing the screwdriver.

The screwdriver comes in a branded plastic case, along with a manual
user and warranty card.

"Bison ZSSH-300-2"

The Zubr mains screwdriver with a power of 300 W is very similar to the previous respondent, not only technically, but also visually. Here we have the same two speeds that provide both self-tapping and drilling.

The screwdriver is comfortable to hold in your hand, but because of the decent weight (1.6 kg) you can't hold it for a long time. Unlike Interskol, this model received a long five-meter power cord, which greatly contributes to better user maneuverability.

Pros of the model:

• hammerless drilling;
• good power indicator;
• 23 lingering moments;
• automatic rotation frequency;
• reverse;
• flexible and long cable;
• structural reliability;
• ergonomic handle with rubberized base;
• attractive cost.

Minuses:

no case included.

Estimated price - about 2,000 rubles.