Choosing a screwdriver: species and characteristics

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• Types of Shuropvittov
• Specifications
• Consumables
• And a couple more words about choosing

The screwdriver is a power tool, which is designed to screw and unscrew the screws, screws and screws.

Device screwdriver.

Currently, the selection of the screwdriver is very large, various models are distinguished by their technical characteristics, a set of functions, cost, etc.

Complete the right purchase is very difficult. Therefore, the main selection criteria should be considered. However, before you decide on the model, it is necessary to determine the conditions of operation, the purpose of use. Maybe it will be periodic short-term work? Or regular long-term use? What functions are important?

Types of Shuropvittov

Screwdrivers are divided by power sources.

Schurpetoverts are divided into various types. The main difference is the type of power supply. The tool can be rechargeable and network. In the first case, the main advantage of the screwdriver is independence from the power grid. Equipment can be used anywhere in the absence of a source of electricity. The battery is enough for several hours of operation. During the recharge, you can use a replaceable battery, which allows you to work continuously.

The network variant requires connection to the power grid. Such a type should be treated with constant work. Also, a network screwdriver has, as a rule, higher power.

Another classification of a surnupture is a division into a professional and household tool. The main difference between these species is different specifications. Professional equipment has a greater power, capable of working at high loads for a long time, more durable and reliable. It is determined by the use of particularly durable materials and alloys.

Household intended for periodic use, have less power and performance. For the usual use of the house, it is enough to use a household screwdriver.

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Specifications

When choosing a screwdriver pay attention to the torque, power, speed, the type of battery, weight, reverse.

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When choosing a screwdriver, special attention is paid to its technical characteristics. These include:

1. Torque (units. Measurements - N * m). The operatility of the instrument largely depends on this indicator. The higher the torque, the more difficult functions will be able to perform a tool (screw the screws into a more dense material, etc.).
2. Power. The indicator characterizes the performance of the screwdriver. The higher the power, the better performance. At the rechargeable tool, the indicator depends on the voltage of the battery, and in the network from the electricity consumed.
3. Rotation frequency (units. Measurements - rpm). This parameter characterizes the rotational speed of the spindle of the screwdriver. Frequency depends on the execution of the screwdriver function of the drill. Speed ​​is adjusted by various pressing on the power button. In some models there is a special switch that allows you to install 2-3 speeds.
4. Capacity and type of battery. These indicators are taken into account only when choosing a battery screwdriver. Capacity determines the time of continuous use of the tool. The greater the container, the more, respectively, longer the cycle of work. Many modern models are completed with two batteries, which allows the use of the tool continuously. By type, the battery is divided into Li-Ion, Ni-CD and Ni-MH. The choice of batteries for the screwdriver depends on the charging time. In the first case, pulse chargers should be used for charging, and such batteries are charged in one hour. For charging two other types of battery, ordinary chargers are suitable. Such devices are divided into the following types of charge: slow (14-16 hours), fast (3-6 h) and high-speed (enough 1 h).
5. Weight. This indicator is also very important. On the one hand, working with a light screwdriver is much easier and more pleasant. However, on the other hand, the low weight of the tool is due to the engine and a small battery. And this speaks about the small power of the screwdriver. All this should be considered when choosing.
6. Reverse. This function of the screwdriver is important and greatly facilitates work. The opposite rotation of the spindle is necessary for turning the drill from the thickness of the material, as well as to unscrew the fastener.

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Thus, when choosing, you should consider all these characteristics. For simple periodic use of the tool, there are enough averages, which will effectively use the tool, without overpaying the extra money. If the screwpool is needed for very rare use, you can consider a simple cheap model. And for professional use, you should choose a powerful and productive screwdriver.

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Consumables

The rechargeable screwdriver works on lithium-ionic, nickel-cadmium batteries.

When choosing a screwdriver, attention should be paid to its snap. It includes the following elements:

1. Bits. The bit is the main screwdriver nozzle, which is used to screw and unscrew the fastener. Bits differ in their size and species. The choice of snap-in depends on the material with which it is planned to work, the species and size of the fastener itself. It is best to choose a tool, which already has a certain amount of bits.
2. Drill. This equipment is needed only for a screwdriver having a drill function. Used drill to do the holes. If the screwdrity further has a hit function, it can drill holes and in brickwork, and in concrete. The drill is different in size and destination (for drilling various materials).
3. Battery. The battery is in the configuration of only battery screwdrivers. Very good if you have two batteries.

All this should be taken into account when choosing a screwdriver. Naturally, the richer equipment, the more expensive the tool will cost. However, if you continue to buy everything you need, most likely it will cost more.

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And a couple more words about choosing

The screwdriver is similar to the electric drill, only instead of drill he has a bit.

It is worth adding a couple more criteria that are important to the consumer. These include:

1. Manufacturer. Many pay attention to the manufacturer of a scheme. And it is quite natural. Brands that are known on the market for a long time and are proven from the best side, cost more. However, the quality of them is always higher.
2. The cost of the tool. This criterion is very important for the consumer. The price of the screwdriver consists of many indicators. These are specific characteristics, and equipment, and functionality, and manufacturer. Of course, the higher the indicators, the more functions the screwdriver performs, the more expensive it will cost. Therefore, it should be found optimal value for the price and quality ratio.
3. Ease of use. At this criterion is also worth paying attention. When buying it is recommended to hold the tool in the hand. The comfort of use depends largely on the knob of the screwdriver.

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Thus, when choosing a screwdriver, it is necessary to take into account a lot of indicators. At the same time, the area and the frequency of application of the instrument is important, the purpose of using it.