Electric wrench: Principle of operation and overview of popular models

If you ask a person who does not know that you need a nicker, then almost everyone will answer that the main purpose of the device is the twisting of the nuts. Even many professionals argue that electric wrench is one of the versions of the screwdriver, the difference consists only in the varieties of cartridges. But this is not quite a right statement. There are some similarities between an electric guide and network screw. But in fact, these are different tools that are very different from each other.

Electric wrench: Principle of operation and overview of popular models

Appointment and principle of work

Let’s compare two tools.

Many wrenches are shock fixtures that already distinguishes the device from the screwdriver. And if in perforators, the blow is carried out along the length of the trunk, then in the navigation – in the direction of movement.

A lot of drum structures are distributed in the world. But they all work according to one scheme:

  • The coupling rotates the cartridge until the operator starts to put pressure on the tool;
  • The leading element ceases to work in a bundle with the cartridge, heavily accelerates, but does not complete the rotation and beats the cartridge (the last, in turn, does not make any movements);
  • Due to the fact that the presenter element is sufficiently funful and rotates at high speed, the moment of force arises along the trunk, thanks to which the attic bolts are shifted.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

The main element of any wrench is considered a coupling. The final price of the device depends on the impact coupling. It is the indicator of reliability. In budget rules of the coupling devices is not installed. On some devices, it can be turned off – then the device will turn into a standard screwdriver. Such goods are very expensive. And if you need a device not for professional activities, but for home use, then it is better to buy a screwdriver and a wrench separately. For versatility, the manufacturer requests a very high price.

The following important indicator of the device of the wrench is torque. That is why in fixtures of the battery type and very powerful batteries are installed. If you buy such batteries separately from the tool, then they will cost you Nedlyozy. Because of this, most manufacturers of nuts produce their goods without batteries in the basic configuration. All buyers rejoice in a low price, and after the purchase they find that the new battery is worth how the device itself.

If you compare screwdrivers and wrench, the latter, in turn, require increased current for comfortable work. Consequently, such a need is to the detriment of the battery life. Expensive tools created for professional activities also work no more than half an hour at full battery charge.

Electric wrench: Principle of operation and overview of popular models

Situating the above items, it can be noted that the spectrum of the ignition of the wrenches is much already than that of the screws or perforators. It makes sense to buy a fixture if you are not a lover of automotive services. With it, you can inspect the car. It can be especially useful in the garage. Car bolts will not be able to unscrew the wrench or adjustable key. All the masters came across a situation where nuts and bolts were not rejected for a long time, so they are in the “frozen” position. In this situation, the nobility will also be indispensable, since manually promotion is very difficult.

It is not recommended to use the house tool for other purposes. Since he will only aggravate the situation due to the lack of a regulator. Here you will not be able to disconnect the coupling. And on large turns, the device can “demolish” threads.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Wrench is very convenient in the professional sphere. It will be useful in maintenance services, when installing tires and car dealerships. In these situations, it is difficult to overestimate the importance of the device: it is very powerful and partially has the functions of dust- and moisture protection.

The device is often used when providing field technical support, it is especially common among operators that are engaged in assembling and disassembling iron structures. The device is popular in industry, plants.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Specifications

Let’s start with the most important characteristics of the device – the moment of force. The higher this indicator, the big nuts are able to move this tool. Before purchasing the device, you need to find out for yourself, in what purposes it will be used. If you decide to promote a small-size bolt with a powerful device, it just breaks the thread. Therefore, experts recommend repelled from the rough diameter of the nut.

For the 12th size nuts, the device with torque in 100 nm. The nuts 18 sizes are well spinning the device in 270 nm, and the 20th size is linked to a torque of 600 nm. Today it is the most powerful unit.

The type of cartridge depends on the size of the spinning nuts and the moment of the tool force. A fourth-inch hex cartridge is usually installed in very weak fixtures. They work in a pair with flat or sacrilate bits (sizes 1-3) and with wrench (up to 12 size). M12 heads often stand in mini perforators.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Less common view is a cartridge for 3/8 inches and square (0.5 inches). The latter is the most popular among the heads with the dimensions of M8-M12. Square species is used in a bundle with very large nuts, which are found when repairing trucks or during the assembly of large iron structures. Many manufacturers, in addition to the standard configuration, are laying several adapters into less popular cartridges as a bonus.

The maximum number of rotations per second may indicate the performance of the instrument in a second. This indicator is not very in demand when working at home, but is a very important point when assembling works on factories, where the tool is almost never turned off. All other buyers may not pay attention to the number of revolutions. You just need to know that it is closely related to the number of shocks performed by the device per second. And the more this number will be, the easier it will work with the tool. Since not in all cases, the user needs a high frequency of rotations, it is advisable to make your choice in favor of those devices that pre-installed the gearbox and there is an adjustable high-speed mode.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Electrical activists for their species are divided into unstressed and drums. Not in all cases the impact function will be useful. Often the bolts are tightened enough tightly, so if at the slightest pressure, the blow will work, the carving and nut will immediately come into disrepair. Therefore, the manufacturer provides a shutdown function. Please note that rotational power of shock tools will always be higher than that of unstressed, even if the power is equal.

Talk about the nutrition of the tool. It can operate from 220V power lines, from the on-board nutrition of a cargo (24 V) or a passenger car (12 V), as well as from autonomous power supply. Most often, electrical actors are very demanding to resources. From one battery charge you will not be able to work more than a quarter of an hour. There are no guarantees that replaceable batteries will provide you at least half an hour of smooth operation. And buy the third battery – too expensive.

If you do not plan to use the device for complex tasks, then purchase versions running from the network. They are optional to connect to the outlet on 220 V. Network wrench operate perfectly even from the car, they can be transported in the trunk.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

If you still buy a battery type of device, always inspect the kit by checking the presence of batteries – the low price can do expensive.

Advantages and disadvantages of mechanisms

The manufacturer very rarely describes the type of shock mechanism (only in expensive models). But this indicator that should always be paid attention to. Therefore, be sure to ask the seller information about “stuffing” tool. An experienced consultant will always inform you. Also, this information can be found on the manufacturer’s website, reading the reviews about the device.

The following will be considered all types of percussion mechanisms.

  • Pin Clutch and Rocking Dog represent a long-nose system resembling a cone. None of these systems cannot be applied with complex tasks.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

  • Pin Clutch consists of small details. Such a system is found in network devices most often. Thanks to her, it is possible to achieve smoothness of impact, vibration damping. The mechanism has a good torque. While choosing the desired system should be neat. All insides must be wear-resistant and shockproof. Otherwise, your tool will come into disrepair after a couple of months of work.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

  • Rocking Dog has a very primitive structure. Here the quality of the material from which the mechanism is made is not the indicator of reliability. Such a system is installed in the warehouse lines. The negative side is the presence of loud noise while working and the absence of the absorption function of vibration.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

  • PIN LESS mechanism also represents a simple design. But unlike the system described above, this option is able to absorb vibration. To compare the characteristics, then PIN LESS is a golden middle between Rocking Dog and Pin Clutch.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Consider some options.

  • The most powerful features among battery tools have Ryobi R18IW3-120S wrench. The manufacturer provides for work at 3 speeds, low speed speed so as not to damage the thread or bolt. Battery here goes in the basic configuration. This battery is only 18 V, but can unscrew the bolts even on the tractor. Judging by the reviews of buyers, it can be said that the device has a very comfortable handle. Included there is a bag for transporting the device.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

  • “ZUBR ZSUA-12-Lee KNU” will be the perfect option when working at home. It is the easiest on the market and is designed to work with furniture. The tool weighs only 1000 g, but it is very strong. The device is percussion and in some cases will help out where the screwdriver is not copened. This small tool works from 12 volts and accumulator by 1.5 A * h. With these indicators, the device will be able to work for about three hours continuously. Buyers noted the presence of carrying housing. The negative sides are the fact that the battery sits very quickly when working in the cold.

Electric wrench: Principle of operation and overview of popular models

  • AEG BSS 18C 12Z LI-402C. The manufacturer makes a big focus on the quality of the battery. A distinctive feature of AEG is that the same battery and charger are suitable for any tool for this manufacturer. The device is quite powerful, has a high rating and can work with bolts and self-drawing of any sizes. With careful appeal, it will last you for many years. The device has one minus – the price. In Russia, rates start from 300 dollars.

Electric wrench: Principle of operation and overview of popular models

  • “ZUBR ZSUA-18-LIK” is the best selling goods in Russia in the market of wrench. For 100 dollars you are offered torque 350 N * m, autonomous meals, caring case and charger. If we consider foreign models with such characteristics and package, then their cost begins from $ 250. And the Russian version is given a guarantee for 5 years. Specialists celebrate convenience when repairing a car. When selecting the desired nozzle, the tool turns into a full-fledged screwdriver. The negative side is the battery. Often it has more weak characteristics than written on the packaging of goods.

Electric wrench: Principle of operation and overview of popular models

  • Ingersoll Rand W5350-K2 recognized as the best angular wrench. It is used in places where ordinary devices simply do not fit. In the box with the device there is a charger and two batteries for 20 volts. The device costs less than 100 dollars.

Electric wrench: Principle of operation and overview of popular models

  • Among network devices can be noted BSR-12. It is suitable for car repair. The device is quite small, weighs about 1800 g, the torque is compiled 350 N * m. Device, despite good performance, worth not more than 40 dollars.

Electric wrench: Principle of operation and overview of popular models

  • If you need to work with large cargo machines, disassemble large iron structures, pay attention to the moment Wrench Makita TW1000. The device operates from 1300 W and is designed for the bolts with dimensions of 22-30. Possible adjustment of the tightening torque. The device is made of shockproof plastic and comes with a case for transportation and an additional handle. This is the best universal tool. But for such characteristics will have to pay a lot: the cost in Russia begins from 850 dollars.

Electric wrench: Principle of operation and overview of popular models

  • “Bison SSGU-350” – good Chinese assembly wrench. It costs about 90 dollars. The seller gives a guarantee for 5 years. The device is equipped with a five-meter cable.

Electric wrench: Principle of operation and overview of popular models

How to choose?

To begin with, decide which purpose you want to purchase a device. Among motorists are distributed pneumatic dynamometric and tightening electric wrench. To repair cars, you should choose a tool with torque 250-700 nm and 0.5 inches cartridge. The cost fluctuates in the area of ​​$ 100-500.

If you need it to work in the country, assembling the vineyard, the installation of children’s swings, you can choose an electrical machine with autonomous power, medium torque and a quarter or half-one’s cartridge. They cost from 50 to 500 dollars. There is a very large range, so everyone can choose a device for his pocket.

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Electric wrench: Principle of operation and overview of popular models

Bosch GDS 24 Professional Shock Wrench Overview Look In the following video.

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