Features: advantages and disadvantages
The Zubr wrench is, rather, a professional tool that can be used very little in everyday life, since we rarely unscrew and tighten the nuts at home, except when changing wheels on a car. But some still buy this device for themselves.
The Zubr nut runner has a number of advantages.
- High quality. Strict control at all stages of production, as well as serious acceptance of each product, allows only high-quality copies to reach the buyer.
- Price. The price for Zubr wrenches is quite democratic, the tool is available to a large segment of the population of our country.
- Innovation. Every day, the company's employees are engaged in scientific research, directing their achievements to improve the product.
- Views. The lineup is quite wide. Everyone will find a device with the necessary functionality.
- Guarantee. The warranty period for Zubr nutrunners is 5 years.
- Service. For a faster and better solution to problems that arise with equipment during the warranty period, the company has opened a network of service centers not only in Russia, but also abroad. And the number of such centers is growing.
Purpose and principle of operation
Let's compare the two tools.
Many impact wrenches are impact devices, which already distinguishes the device from the screwdriver. And if in hammer drills the blow is carried out along the length of the barrel, then in wrenches - in the direction of travel.
There are a lot of percussion structures in the world. But they all work according to the same scheme:
- the clutch rotates the chuck until the operator begins to exert pressure on the tool;
- the driving element stops working in conjunction with the chuck, accelerates strongly, but does not complete rotation and hits the chuck (the latter, in turn, does not make any movements);
- due to the fact that the driving element is quite weighty and rotates at high speed, a moment of force arises along the barrel, due to which the fixed bolts move.
The main element of any wrench is the clutch. The final price of the device depends on the shock coupling. It is an indicator of reliability. In budget lines of devices, the coupling is not installed. On some devices, it can be turned off - then the device will turn into a standard screwdriver. These products 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 asks for a very high price.
The next important indicator of the wrench device is torque. That is why very powerful batteries are installed in battery-type devices. If you buy these batteries separately from the instrument, they will cost you dearly. Because of this, most wrench manufacturers release their product without batteries as standard. All buyers rejoice at the low price, and after purchase they discover that the new battery costs the same as the device itself.
Summing up the above points, you can see that the range of directivity of impact wrenches is much narrower than that of screwdrivers or hammer drills. It makes sense to buy a gadget if you are not a fan of car services. With its help, you can inspect the car yourself. It can be especially useful in a garage. Automotive bolts cannot be removed with a wrench or adjustable wrench.All the craftsmen faced a situation when the nuts and bolts had not been loosened for a very long time, therefore they are in a "frozen" position. In this situation, the impact wrench will also be indispensable, since it is very difficult to unscrew it manually.
It is not recommended to use the instrument at home for other purposes. Since it will only aggravate the situation due to the lack of a regulator. You cannot detach the clutch here. And at high speeds, the device can "demolish" the thread.
The wrench is very handy in the professional field. It will come in handy in maintenance services, when installing tires and in 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 in the field of field technical support, it is especially common among operators who are engaged in the assembly and disassembly of iron structures. The device is popular in industry, in factories.
How to use
It is not difficult to work with Zubr nutrunners. Anyone can handle them. But nevertheless, before working with this device, you need to thoroughly familiarize yourself with the instruction manual. Since the use of a battery or mains unit is not much different, consider the operation of a battery operated nutrunner.
Initially, after purchasing the device, you should properly charge the battery. To do this, you need to install it on the charger, which is sold in the kit, and leave it for 5 hours for a full set of capacity.
Next, we install the battery into the device. This must be done carefully, inserting it into a special compartment until it clicks. Then you need to select the appropriate bit that you will use and install it on the unit. The impact wrench is ready to work
Please note that the first 2-3 times you need to go through full charge and discharge cycles of the battery. This will give the battery the maximum capacity.
In order for the tool to work for a long time, it needs to be periodically serviced. Wipe the wrench from dust, lubricate the engine. Only use oil for lubrication that is specially designed for pneumatic motors. A conventional machine will not work here, since it has a high viscosity, the engine blades can simply stick together and it will fail.
Equipment
The devices manufactured by the Zubr company are equipped with everything you need and are completely ready for work. Cordless models are supplied with two batteries, a charger, a belt bag, an extension cord, an adapter, and a set of drills and bits. Networked devices are all the same, except for batteries and chargers. Each model is placed in a convenient case, which greatly simplifies its transportation and storage. In addition, many devices have a flexible shaft in the kit, which helps to carry out work in hard-to-reach places that cannot be reached with a conventional screwdriver. The tool kit often includes bit extensions, several 6-13 mm sockets, instructions for use and a warranty card.
The lineup
In the line of Zubr nutrunners, several modifications are presented today. Here are the most popular ones.
ZGUE-350
Powerful unit powered by the electrical network. Equipped with a shock work mechanism. The wrench has a metal body, a comfortable ergonomic handle is partly covered with a rubber pad and does not slip in the hand. The power cord is 5 m long, which allows you to use it without connecting an extension cord.
The power of the power tool is 350 W, it is capable of delivering a torque of up to 300 N * m. It has a reverse button, it is convenient to switch the direction of the device with one touch. The cost of the model is about 7 thousand rubles.
ZGUA-18-Li K
This model is battery operated. The tool has an increased torque, which is 350 N * m. Its battery is also quite capacious - 1.7 A * h.
The device is equipped with a backlight, which is convenient when working in dark places, and it also has a reverse button. The weight of the nutrunner is small, it is only 2.2 kg. It is comfortable to hold in your hand. The cost is about 7 thousand rubles.
ZGUA-12-Li KNU
Another rechargeable model. The battery capacity here is 1.5 A * h. But the device comes with another additional battery, which allows you to increase the operating time of the device without recharging. Like the previous model, it has an illuminated work area and is sold in a convenient suitcase.
Principle of operation
Before considering how a screwdriver works, you need to refer to its device. The design of the devices is quite simple and consists of an electric motor, a gearbox that transfers rotation from the motor to the spindle, a chuck designed to fix and hold the tool, and a power cable or battery, depending on the type of device. And also the device includes a gearshift mechanism, a reverse, a toggle switch and a tightening torque regulator.
The principle of operation of the screwdriver is also quite simple: the torque from the engine through the gearbox is transmitted to the spindle, which, in turn, begins to twist the tool installed in the chuck (bit or drill). Before starting work, select the desired nozzle, fix it in the chuck, and set the rotation speed and the depth of screwing the hardware. Then they press the start button and get to work.
