Screwdrivers "Interskol": types, selection and repair

The company "Interskol" appeared in 1991 in the city of Khimki, Moscow region. She makes quality power tools. Interskol screwdrivers are among the best in the world.

The Russian company Interskol is popular not only in our country, but also far beyond its borders. This manufacturer produces such high-quality power tools as screwdrivers, drills, hammer drills and much more. One of the main specializations of the company is the production of screwdrivers. In many respects, the devices are superior to their foreign counterparts. A screwdriver is a tool that operates on a 220 volt mains or battery. With the help of such a useful device, you can easily tighten screws, bolts and nuts, as well as drill not very dense materials.

Models from Interskol have good power and stable torque, which can reach 22–32 Nm. Such indicators are quite enough to screw self-tapping screws up to 6–8 mm in diameter in a matter of seconds, while the recess can be adjusted with a special lock. A special electronic element allows you to quickly change the rotation speed. Its maximum figure reaches 4100 rpm. Interskol power tool cases are made of aluminum alloys, which makes it possible to significantly increase the service life.

All screwdriver handles with special pads are designed to comply with the laws of ergonomics. The unit lies in the palm of your hand like a glove, being like an extension of your hand. There are also special mounts that allow you to fix the screwdriver on a belt. A number of technical innovations were embodied in the products from Interskol, which ensured a steady demand for these units. For example, a large torque was implemented in a DC engine.

At the same time, the speed of the gearbox and shaft rotation remained low. Such an elegant technical solution has eliminated the common problem of under-tightening screws. This innovation allowed the shaft of the gearbox itself not to negatively affect the landing bed, which is intended for the supports, while the high ergonomics remains constant. Interskol's products are inexpensive. In terms of cost, the power tool is comparable to the prices for Chinese products, while the quality of Russian assembly is much better.

All dynamic units are made of high-quality metal, including rolling bearings, gearboxes and sliding bearings. The torque of the Interskol drill-driver has a range from 24 to 46 Nm. The power is quite enough to not only tighten the self-tapping screws “to failure, but also to drill metal plates. Such technical characteristics significantly expand the scope of Interskol screwdrivers.

Cordless electric screwdriver from "Interskol" can be of three types:

• 12 volts;
• 14 volts;
• 18 volts.

There is also an electric shock screwdriver that operates on a 220 volt network. This option has more power, it is able to work as well as a drill / screwdriver. Wired brushless electric screwdrivers are produced, which in terms of technical characteristics are not inferior to network devices.

There are several Interskol screwdrivers that are in great demand.

It is worth considering the DA-13 / 18M3 screwdriver from Interskol, which is distinguished by excellent functionality, powerful engine and low price. Such a tool is not inferior to the best world analogues. In the model, lithium-ion chargers provide a voltage of 18 volts (capacity 1.6 A / h), which gives the chance to work with supporting structures for more than three hours. There are more than two dozen levels of self-tapping force, while the torque on the shaft is 37 Nm. This makes it possible to drill even dense wood, for example, oak, with a 26 mm drill, and make holes with a diameter of 12 mm in a metal plate. The maximum rotation speed is 1300 rpm, that is, the screwdriver can easily perform the functions of an electric drill.

This model has the following characteristics:

• light weight (1.5 kg);
• significant power;
• fast charging;
• economical energy consumption.

One battery lasts all day. Among the shortcomings, we can mention the presence of a not very clear backlight. Another portable charger is included. This screwdriver has the following additions:

• backlight;
• two speeds;
• cartridge with one sleeve (diameter - 1.49–12.9 mm);
• Automatic blocking.

A successful model is the DA-12ER-02 screwdriver. It costs about 3.5 thousand rubles, has a bright backlight. It is possible to work with such a unit in the darkest rooms without the presence of electric lighting. The kit contains several chargers (12 volts), each of which has a capacity of 1.31 Ah. The weight of the screwdriver is only one and a half kilograms.

All gears are metal, so the guaranteed service life is significant. And there is also a torque adjustment (12 Nm), in which there are 18 steps. The chuck accepts a drill with a diameter of up to 1 cm. This tool has useful features such as reverse and start button lock. Thanks to the electronic rotation control, working with such a unit is simple and comfortable. Unfortunately (and this is a drawback), rubber pads wear out quickly.

The DSh-10 / 260E2 screwdriver costs only 2.5 thousand rubles. The weight of the screwdriver is less than 1.5 kg, it is very compact and functional. For work in residential premises, such a unit is very convenient, because it can work both from the mains and from batteries. The engine is only 259 watts, the torque is 25.8 Nm. This machine is ideal for working with load-bearing elements made of soft materials. The chuck is functional, you can quickly change drills (from 0.85 mm to 1 cm). There is additionally a reverse and rotation control (electronic unit works). The unit can be used as a mixer. Of the shortcomings, one cannot fail to mention the presence of a slight backlash, which reduces the accuracy of work when drilling.

This model has a minimum weight (0.98 kg) and costs about 3000 rubles. This tool is convenient to use both in professional activities and in everyday life. It is equipped with a powerful 12 volt lithium charger and has a capacity of 1.31 Ah. Torque can be generated up to 29 Nm. The chuck is made very conveniently, you can change drills (from 0.8 to 10 mm) in a matter of seconds. And also this screwdriver has the following features:

• two speeds;
• reverse;
• overload protection unit;
• backlight;
• blocking of the "Start" button.

The DA-18ER model is called the standard among electric tools for household work. This flattering statement is not far from the truth. The unit price is only 5000 rubles. The screwdriver operates on a battery, weighs a little more than 1 kilogram, which is very convenient when performing drywall work of any complexity. The torque is rather big - 36 Nm.

The difference between home and work screwdrivers lies in the power differentiation and the set of different functions. Using a "home" screwdriver, you can attach a shelf or assemble a cabinet. Under such circumstances, powerful engines are not required that can function tirelessly during the working day. Screwdrivers that are used by professionals when installing, for example, drywall, in addition to the ability to unscrew or tighten self-tapping screws for a few seconds, also have a universal set of functions. They can even do drilling and chiselling in brick and concrete walls.

The power of cordless screwdrivers is directly related to the voltage generated by the battery. The difference is quite significant - from 1.1 to 37 V. For the simplest volumes of work, a voltage of up to 6 volts is enough. To screw self-tapping screws into a timber, PVC blocks, drywall is quite enough 9-14.9 V. To drill harder materials, a current strength of 19 volts is required. As you can see, the power allows the screwdriver to be more versatile.

The performance of the unit is directly related to the torque coefficient - the larger it is, the more tightly the screws and self-tapping screws will be screwed on. All this will also have a positive effect on the depth of the drilled hole. To carry out work normally within a private household, a torque of 28 to 42 Nm is required. Professional models typically have a torque of 125 Nm. If a screwdriver has a torque of 10–20 Nm, then it is, in fact, a portable screwdriver.

The torque is adjusted using a retainer - a special ring on which there is a scale with divisions. It is always located at the base of the chuck. You can adjust the required effort to tighten the screws normally. If there is a large number of divisions, then this fact allows you to set the torque more accurately. For household models, the rotation speed does not exceed 850 rpm, professional models have an indicator of 1350 rpm.

And also the quality of the charger is of great importance, because the power and performance of the unit depend on it. There are three main varieties.

• Li-ion (lithium-ion) chargers can withstand up to 3.5 thousand charge cycles. They have such advantages as light weight, fast charging and no memory effect. Among the shortcomings, it is worth noting that the unit operates intermittently at low temperatures. It is worth noting that it is not worth discharging the battery by 100%, it is better to leave a small resource, then the battery will last longer.

• Ni-Cd (nickel-cadmium) - these are pretty hardy chargers that have high internal resistance. They are not afraid of cold weather, they can work perfectly even at temperatures of -20 degrees Celsius.They have less charge cycles, only 1.5 thousand. Among the shortcomings, mention should be made of the long charging time (up to 8 hours). These batteries have a "memory effect", if you do not discharge the battery by 100%, then the capacity will inevitably be reduced. For a battery to last longer, it must be charged at all times.

• Ni-MH (nickel-metal hybrid) - these elements are discharged longer than other types, withstand up to 550 cycles. It is better to keep the batteries at least a little charged, so their resource is better preserved.

When buying, you should pay attention to the type of cartridge. There are two varieties of the most common cartridges.

• Quick-clamping. The rig can be rearranged within a minimum amount of time. Keyless chucks can be with two couplings, in which case the tooling can be tightened by hand. The single sleeve chuck can be changed in a short time with one hand. These chucks are additionally equipped with a spindle lock. The shaft stops when the Turn on button is released.

• Hexagonal. Such cartridges can work with bits. Thanks to this feature, the rig changes in a matter of seconds. When buying a screwdriver with a hexagonal chuck, you should pay attention to the diameter that is located inside the "glass". It is his parameters that will determine the size of the nozzle, which is applicable for the normal operation of the tool. Usually these are 10 mm bits.

The tool kit you purchase may vary slightly depending on the model. The package is as follows:

• battery (lithium or nickel-cadmium battery) - 2 pcs .;
• retainer - 1 pc.;
• button - 1 pc .;
• charger - 1 pc .;
• case;
• documentation and warranty card;
• a set of drills, crosses, bits, nozzles;
• transition block;
• nozzle for self-tapping screws - 1 pc .;
• case-case;
• a spare engine is also possible.

Household screwdrivers work for a limited amount of time (no more than 20 minutes). After purchase, you should carefully read the instructions, which provide the following information:

• the workplace should have normal lighting;
• it is forbidden to work in places where there are explosive and flammable materials;
• children must be present near the operating unit;
• before starting the work process, you should check the presence of grease in the screwdriver;
• if the power screwdriver has double insulation, then it must be connected to a socket with a grounded wire;

• there should be no contacts of the device with metal materials;
• if work takes place in rooms with high humidity, an overheater should be used, which ensures safe contact of the device with the network;
• when working, you should use special gloves and shoes, especially in rooms with high humidity;
• the screwdriver must be out of the reach of moisture;
• the cord of the screwdriver must not come into contact with machine oil;
• at the beginning of the working cycle, test the operation of the "Start" button;

• maintain a stable balance during the operation of the screwdriver;
• if the screwdriver works with increased load, it may fail, especially for non-professional models;
• if the "Start" button has become unusable, then you cannot work with it;
• during repair, the device should be disconnected from the electrical network;
• it is recommended to draw up a schedule for a preventive examination and strictly follow it;
• repair work of high complexity should be done in a service center;
• independent disassembly of the device, which is under warranty, is inadmissible;

• drills, nozzles and other elements must correspond to the format of this model;
• before starting work, the screwdriver must run idle for a short time;
• do not turn the head more than 104 degrees;
• before changing the attachments, remove the battery, and you can also fix the rotation direction switch in the middle position;
• when changing nozzles, one hand holds the device, the other hand should remove the cartridge;
• to disassemble the cartridge, turn it clockwise;

• disassembly of the cartridge should be done without serious physical effort;
• before doing such work, you should carefully read the assembly diagram, assemble all nozzles, carefully inspect them;
• after completion of the work, a test run should be made, the tool drill should have normal centering;
• you should watch out for removable batteries, which should not be discharged by 100%; if this happens, the battery should be charged urgently.

If the breakdown of the screwdriver is insignificant, then you can fix it yourself. When a screwdriver becomes unusable, you should focus on the following obvious signs:

• a strange grinding is heard;
• an unusual background noise occurs;
• the engine is roaring or does not function at all;
• the machine can work, but power is lost;
• an extraneous burning smell is felt;
• the screwdriver begins to vibrate finely;
• the battery does not charge;
• the switch has broken (the "Start" button does not work).

The most famous screwdriver breakdowns are as follows:

• violation of contacts in the switch block;
• wear of rubber gaskets;
• engine defect;
• gear wear;
• bearing wear.

It is not difficult to disassemble a screwdriver, unless it is under warranty. During disassembly, it is recommended to take a photo of the workflow in order to record all stages. Very often there are defects in the node that provides power, in this case, the following actions are done:

• screws are unscrewed, the case is disassembled;

• the "Start" button is removed;

• all wire fasteners are removed;
• the mechanical and electrical unit is being repaired;

• manually tested and bearings inspected;
• the bearings on the rotor are also checked.

If all the contacts are in order in the electrical unit, then each element should be “enlightened” with the help of the device. If any block shows insufficient voltage, it should be replaced. All such work should be done with the battery on. If the signal is present, then the charger is removed, its contacts are wrapped. If the resistance is zero, it means that the start button is operational. It follows that the fault is in the brushes (they need to be replaced) or in the engine itself.

Electric motors on screwdrivers are single-phase and fairly reliable (DC collector). The engine consists of the following elements:

• magnet;
• anchor;
• brushes.

Another important element is the gearbox. He is responsible for converting the revolutions of the engine shaft into the rotation of the cartridge itself. In screwdrivers, there are two types of gearboxes, such as:

• planetary;
• classic.

Reviews in social networks about the Interskol screwdrivers are the most positive. In most cases, the reliability and compactness of these devices is noted. Light weight is also very important, especially among drywall workers who often have to work at height. If the screwdriver is uncomfortable or heavy, then this factor will certainly affect the quality of work. Screwdrivers "Interskol" professional series fully meet the requirements of professional builders. There is also a good (if not perfect) match in terms of price and quality.A screwdriver of the same class from "Makita" costs four times more. Russian manufacturers know how to make high-quality equipment at the level of world standards.

How to fix the Interskol screwdriver, you will learn from the video below.