A wrench is a tool used to tighten and unscrew threaded connections. Usually it is used where it is impossible to work with a wrench, in hard-to-reach places, if the metal is rusty or an unusual nut. A distinctive feature of the device is its control function when tightening and tightening fasteners. We'll talk about how to choose the best impact wrench below.
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The appearance of the nutrunner resembles a conventional drill with an attachment, consisting of a motor, a clamping device and a spring, it helps to unscrew the nut. The 1/2 "chuck is installed on a device designed for doing housework and in the country, 3/4, 1" - used in construction, car repairs.
How is a screwdriver different from a nutrunner? The first one is usually used for small jobs, and the impact wrench is for professionals, it is heavier, more powerful.
The main parameters of the device:
Impact wrenches are subdivided into impact wrenches - they are used by professionals, the engine transmits a strong impulse to the cartridge and it starts to rotate faster, and shock-free - the tool is used for domestic needs.
The market offers a wide range of well-known brands for the production of quality tools. Manufacturing countries are especially popular: Russia (Bison), Germany (Bosch, Hilti, AEG, Metabo), Japan (Makita, Hitachi), USA (DeWALT).
Most of the products are manufactured in China, but this should not confuse the buyer, because you can buy a quality tool at an affordable price.
Wrenches are distinguished by the type of nutrition.
The advantage of the device is its complete autonomy, achieved through a replaceable battery.It copes with rust and is indispensable in places without electricity. When choosing a tool, you need to pay attention to the rotating element: a high indicator is used for tightening / unscrewing large nuts. You need to know the capacity of the battery, the operating time depends on it. Torque range 100-500 Nm. The weight of the device matters: it is proportional to the power; for comfortable work, you should choose a lighter one.
For smooth operation, it is advisable to have a charger and two batteries: while one battery is charging, you can work with the other.
The pluses of the tool include:
It is not advisable to work with a wrench in a room with high humidity.
For this type of instrument, the power source is the electrical network. The device has high performance, high power, but less mobile, more often refers to the shock type. They are used in mechanical engineering, furniture production, heavy industry, screwing and unscrewing.
The device is distinguished by its versatility due to the presence of various attachments, adapters. The electric tool has a high performance, it is reliable, equipped with an ergonomic handle, protected by a vibration-insulating coating. High power models are supplied with an additional handle. The weight of the device can be up to 9 kg.
Popular for use in auto and repair shops due to its fast action. Operation is provided by a pressurized air supply to the wrench and adjustment is made using a button on the handle. The body is made of metal, which is more durable than plastic.
Distinctive features:
The instrument is subdivided into percussion and non-percussion. These models are lightweight, durable, they have a strong clamping device, they can be used in conditions of high humidity and high concentrations of combustible gases, since no spark appears during operation. The device is used in the presence of compressor equipment, mainly in industrial plants and repair shops.
This device is driven by a hydraulic pump with a distributor. All units are interconnected by high pressure hoses and a quick-release coupling. A feature of the device is the control of the torque reaching a maximum of 10,000 Nm. The impact wrench is especially useful in places where a lot of effort is required to tighten the fastener. Separate devices of this type are used in underwater work. The main area of use is tire fitting.
Wrenches are divided into:
An autonomous vehicle that uses gasoline as a power source. Its great power is used for the construction of railway tracks. The wrench is characterized by a large weight, dimensions and is noisy.
Work efficiency depends on factors:
In this form, one of the main characteristics is a high-quality battery.Only a powerful, long-lasting battery will allow you to feel the advantage of such a tool.
The Japanese device is the most powerful in the line. The maximum torque of 400 Nm makes it possible to tighten the large nuts and unscrew the rusted, stuck bolt. The device has three speeds:
The wrench mechanism at maximum torque is able to get the least response. Three LEDs illuminate the work surface evenly. The rubberized grip is non-slip and comfortable to work with. The battery included in the wrench is versatile and fits the Ryobi One + range.
Country of origin: Japan.
Average cost: 13,500 rubles.
This model is the most popular. Maximum torque - 350 Nm, complete with: battery, charger, case. Speed - up to 2200 rpm, backlight, electronic gear change. Users of the tool note reliability, sufficient power for everyday work.
Manufacturer: China, 5 years warranty.
Price 6480 rub.
The German manufacturer pays great attention to the quality of the battery and charger. These two interchangeable units fit the AGE series tools, including hammer and drills. The maximum tightening is 360 Nm, most buyers note a stable 350 Nm.
The set includes: 2 batteries of 4 A * h each, an adapter from 1/2 "square to standard bits is provided. The wrench has a metal body - this ensures reliability.
Country of origin: Germany.
Price: 18500 rub.
The angle device is used to work in an inaccessible place. The tool, despite its low weight, only 1.5 kg, has a clamping torque of 60 Nm, it is able to tighten fasteners with metric threads up to M12. The wrench is useful for those who use MAKITA tools with a 10.8v battery
Distinctive features:
Country of origin: Japan.
Average cost: 11,590 rubles.
The tool will become indispensable for assembling furniture, simple repairs and various works in the country. The impact wrench has a power of 90 Nm, it easily performs complex work that a powerful screwdriver cannot cope with. The battery with a capacity of 1.5 Ah is designed for 4 hours of autonomous work. In addition, the impact wrench has bits that come in handy for home use. Speed - 2000 rpm, torque - up to 90 Nm. Country of origin: China.
Price: 5900 rubles.
Equipped with lithium-ion technology includes:
The American-made angle wrench can deliver a maximum torque of 180 Nm - this property can be very useful in inaccessible places when working with rusty fasteners. The set includes 2 batteries with a voltage of 20 V and a capacity of 1.5 Ah, a charger and a case. The maximum speed is 1900 rpm.
Country of origin: USA.
Average price: 6500 rubles.
This Chinese tool is popular with auto repair shops and car enthusiasts. At 350 W, the wrench handles rusty nuts with ease. Maximum speed 1700 rpm, there is a reverse. The wrench has the ability to replace brushes, there is an electronic speed control. The device is easy to use thanks to the long 5 m power cord.
Country of origin: China.
Average price: 6290 rub.
An electric tool has a peculiarity: even a slight increase in the maximum torsion torque leads to an increase in weight. The DW292 is an exception, with a power of 710 W with a torque of 440 Nm and a weight of only 3.2 kg. The tool is equipped with a special vibration damping element, which almost completely dampens recoil and allows you to work for a long time without stress.
The device has a robust metal housing and the motor is protected from overloads. Handles tractor bolts and self-tapping screws.
Country of origin: USA.
Average price: 17,300 rubles.
Powerful for heavy duty screwing applications. The power output is 360 W, the torque is 600 Nm. The wrench is equipped with an electronic Valio system that adjusts the speed depending on the material property. The body is made of durable aluminum alloy. The tool is used not only for wheels, but also in construction work.
Country of origin: Germany.
Average cost: 22,000 rubles.
Designed for professional construction work in the installation of metal structures. It is necessary to take into account the high power consumption of 1300 W, the shock torque of 1000 Nm. The body of the tool is made of impact-resistant material and is equipped with an additional handle for ease of use.
Country of origin: Japan.
Price: 54000 rub.
The high-quality Japanese tool has a high speed of up to 2400 rpm, the setting of two torques is 150/200 Nm. Electronic adjustment allows you to control the process and tighten the quality. The impact wrench is optimally balanced by placing the handle in the middle of the body. Power consumption - 360 watts.
Country of origin: Japan.
Average price: 20,000 rubles.
It is the most powerful in its class combined with compactness. The body and handle are made of metal. For comfortable work, an insulating cover and an additional handle for the stop are used. Torque - 610 Nm, speed - 1800 rpm, equipped with a reverse function.
Country of origin: Japan.
Price: about 28,000 rubles.
Convenient design allows for use for vehicle maintenance. Powered by a cigarette lighter and battery terminals (there are crocodile clips). The tool is compact, lightweight with a torque of 350 Nm - quite enough for the wheels of any car. The set includes a case.
Country of origin: China.
Price: 2190 rub.
The wrench of this brand is used for tire fitting in garages with a compressor of at least 226 l / min. The tool has a maximum torque of 720 Nm, which makes it suitable for truck wheels. The device is lightweight due to the lack of an engine.
Country of origin: Germany.
Price: RUB 4730
The device body is made of a special composite material, which allows:
Air is vented through the handle, which prevents dust from entering the work area. The tool is equipped with a three-stage tightening system that allows you to work with bolts of different threads. Used in strenuous professional work in a car workshop. Torque - up to 930 Nm, weight - 1.8 kg. Country of origin: Germany.
Price: 13800 rub.
When purchasing a nutrunner, you need to decide on the purpose: for what work it will be used, and our recommendations will help you in choosing.