A wrench is a tool used to tighten and loosen threaded connections. It is usually 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 controlling function when tightening and tightening fasteners. How to choose the best wrench, let's talk below.
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The appearance of the wrench resembles a conventional drill with a nozzle, consisting of a motor, a clamping device and a spring, it helps to unscrew the nut. A cartridge with a diameter of 1/2 inch is installed on a device designed to perform work around the house and in the country, 3/4, 1 inch - used in construction, car repair.
What is the difference between a screwdriver and a wrench? The first is usually used for small jobs, and the wrench is for professionals, it is heavier, more powerful.
The main parameters of the device:
Impact wrenches are divided into impact wrenches - they are used by professionals, the engine transmits a strong impulse to the cartridge and it starts to rotate faster, and shockless - the tool is used for domestic needs.
There is a wide range of well-known brands for the production of quality tools on the market. Particularly popular are the manufacturing countries: Russia (Zubr), Germany (Bosch, Hilti, AEG, Metabo), Japan (Makita, Hitachi), USA (DeWALT).
Most of the products are made in China, but this should not confuse the buyer, because you can buy a quality tool at an affordable price.
Screwdrivers are distinguished by the type of power supply.
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 / unwinding large nuts. It is necessary to know the capacity of the battery, the operating time depends on it. Torque range 100-500 Nm. The mass of the device matters: it is proportional to the power, for comfortable work, you should choose a lighter one.
For smooth operation, it is desirable to have a charger and two batteries: while one battery is charging, you can work with the other.
The advantages of the tool include:
It is not advisable to work with a wrench in a room with high humidity.
For this type of tool, the power source is the mains. 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, perform screwing and unscrewing.
The device is versatile due to the presence of various nozzles, adapters. The electric tool has high performance, it is reliable, equipped with an ergonomic handle protected by a vibration-isolating coating. High power models are supplied with an additional handle. The weight of the device can reach 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 via a button on the handle. The case is made of metal, as a more durable material than plastic.
Distinctive features:
The tool is divided into percussion and unstressed. 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 occurs during operation. The device is used in the presence of compressor equipment, mainly in industrial enterprises and repair shops.
The drive of this device is 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 moment of force, reaching a maximum of 10,000 Nm.A wrench is especially useful in places where a lot of effort is required to tighten fasteners. Some devices of this type are used in underwater work. The main area of use is tire fitting.
Screwdrivers are divided into:
A self-contained vehicle that uses gasoline as a power source. Its large capacity is used for laying railroad tracks. The wrench is characterized by a large weight, dimensions and it 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 large nuts and unscrew a rusty, 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 handle allows not to slip and creates comfort in work. The battery included in the wrench is universal and fits the Ryobi One+ line of devices.
Country of manufacture: Japan.
Average cost: 13500 rubles.
This model is the most popular. Maximum torque - 350 Nm, complete with: battery, charger, case. Speed - up to 2200 rpm, backlight, electronic speed change. Tool users note reliability, sufficient power for everyday work.
Producer: China, gives a guarantee of 5 years.
The cost is 6480 rubles.
The German manufacturer pays great attention to the quality of the battery and charger. These two interchangeable devices are suitable for AGE series tools, including rotary hammer and drill.The maximum tightening is 360Nm, most buyers note a stable 350Nm.
Included: 2 batteries of 4 Ah, an adapter from a 1/2 inch square to standard bits is provided. The wrench has a metal body - this ensures reliability.
Country of origin: Germany.
Cost: 18500 rubles.
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 can 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: 11590 rubles.
The tool will become indispensable when assembling furniture, simple repairs and various works in the country. The impact wrench has a power of 90 Nm, it easily performs complex jobs that a powerful screwdriver cannot handle. The battery with a capacity of 1.5 Ah is designed for 4 hours of battery life. In addition, the wrench has bits that are useful for work at home. Speed - 2000 rpm, torque - up to 90 Nm. Country of origin: China.
Cost: 5900 rubles.
Equipping with lithium-ion technology provides:
An American-made angle wrench can deliver a maximum torque of 180 Nm - this property can be very useful in inaccessible places, for working with rusty fasteners. The kit 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 in auto repair shops and among motorists. With a power of 350 watts, the impact wrench easily handles rusted nuts. The maximum speed is 1700 rpm, there is a reverse. The wrench has the ability to replace the brushes, there is an electronic speed control. The device is easy to use thanks to a long 5 m power cord.
Country of origin: China.
Average price: 6290 rubles.
An electric tool has a peculiarity: even a small increase in the maximum torque leads to an increase in weight. Model DW292 is an exception, its power is 710 watts with a torque of 440 Nm, and its weight is only 3.2 kg. The tool is equipped with a special vibration-damping element, which almost completely dampens the recoil and allows you to work for a long time without stress.
The device has a durable metal case, and the motor is protected from overloads. Copes with tractor bolts and self-tapping screws.
Country of origin: USA.
Average price: 17300 rubles.
Powerful, designed for screwing in difficult conditions. Power output - 360 watts, torque - 600 Nm. The impact wrench is equipped with an electronic Valio system that adjusts the speed depending on the properties of the material. The body is made of durable aluminum alloy. The tool is used not only for wheels, but also in construction work.
Country of manufacture: Germany.
Average cost: 22,000 rubles.
Designed for professional construction work during the installation of metal structures. It is necessary to take into account the high power consumption of 1300 W, the impact moment is 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 manufacture: 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 twist with high quality. The impact wrench is optimally balanced by placing the handle in the middle of the body. Power consumption - 360 watts.
Country of manufacture: Japan.
Average price: 20,000 rubles.
In its class, it is the most powerful in combination with compactness. The body and handle are made of metal. For convenient work, an insulating coating and an additional handle for emphasis are used. Torque - 610 Nm, speed - 1800 rpm, equipped with a reverse function.
Country of manufacture: Japan.
Price: about 28,000 rubles.
Convenient design allows you to use for car maintenance. Operates from the 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. Included is a case.
Country of manufacture: China.
Price: 2190 rubles.
A wrench of this brand is used for tire fitting in car repair shops 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 manufacture: Germany.
Price: 4730 rubles.
The body of the device is made of a special composite material that allows:
The air is removed through the handle, which prevents the appearance of dust in the working area. The tool is equipped with a three-stage tightening system, which allows you to work with bolts of different threads. It is used at intense professional work in a car repair shop. Torque - up to 930 Nm, weight - 1.8 kg. Country of manufacture: Germany.
Cost: 13800 rubles.
When purchasing a wrench, you need to decide on the purpose: for what work it will be used, and our recommendations will help in choosing.