How to assemble a disassembled electric screwdriver Makita.

Repair of the cartridge and other parts of the electric screwdriver “Makita

produces various power tools, among which there are screwdrivers. The company began its history in the beginning of the 20th century, and to this day it continues to delight consumers with its high quality goods. Let’s look at the general features and characteristics of the models of this company.

Makita screwdrivers are very powerful. The average speed rate for various models is about 2300 rpm, which is a good indicator compared to other brands. The weight of most tool models lies in the range of 1.5 kg. Its small mass indicates that such a tool will work comfortably. The manufacturer also took care of the convenience of working in poorly lit rooms, making the majority of models backlight by LEDs. Separately, it is worth highlighting the type of handle to keep these tools on the weight. As a rule, they are made by rubberized, and therefore it is convenient to keep them in the brush, respectively, the workflow is much easier.

The disadvantage of these screwdrivers is the strong vibration of the handle during operation, as well as their short.lived batteries. In addition, the price of the products of this company is quite high, which is important for the domestic consumer.

Scheme, device of electric screwdriver “Makita

Consider the device of an electric screwdriver on a particular model 6271d. We present the diagram of this model in the figure below.

Scheme 1

  • Switching lever
  • The hub of the case
  • Branded plate
  • Screw
  • Spring
  • Right switching lever
  • Start button
  • Contact terminal
  • Screw
  • Fasted cartridge
  • Reducer assembly
  • Electric motor
  • Screw
  • The hub of the case
  • Charged knot
  • Battery

Modern electric screwdriver is a high.tech device. Important structural elements:

  • Removable battery
  • Rubbed handle handle
  • Powerful electric motor
  • Metal planetary gearbox
  • Smooth start button
  • The reverse switch button
  • Twisting control regulator

These are the main components of the design of the electrical screwdriver, which are included in the basic package of any model of electrical screwdriver.

Dismantling of electric screwdriver “Makita”

To disassemble an electric screwdriver, you will need a cross screwdriver and a little personal time. To disassemble the electric screwdriver completely, you need:

  • unscrew the screw screws;
  • remove the composite mechanism of the start button;
  • Remove the electric motor with the gearbox;
  • disconnect the gearbox from the engine, promoting the bolts consolidating them.

To disassemble the battery of an electric screwdriver, you need to spin the bolts connecting the housing, or divide the joints of the body on a glue basis using a soldering iron. Inside the battery there are several nickel-cadmium batteries having a certain container and loading charge. In the case of repairing the battery, they are required to replace them with new.

The cartridge changes using a screwdriver and a hexagonal key. First, you promote the fastener screw in the cartridge with a screwdriver, rotating it clockwise. Then the hexagon is inserted, the reverse button is turned on, clamped, and then the cartridge is easy.

We disassemble the battery with a spatula or stationery knife

Those who are not used to working on hammers and want to make the process of disassembling the battery more quiet and tender, you can offer to use a small metal spatula or knife for the utility. The main thing is that they do not have sharp edges, like a large screwdriver, which can easily damage plastic.

assemble, disassembled, electric, screwdriver, makita

First you should completely walk around the perimeter of the entire block to loosen the seam, and only after that you can start with a small screwdriver pick up flexible plastic. The method is no less painstaking than the first, and if a person is not sufficiently experienced, damage on a plastic case may remain. However, if you work as carefully as possible, you can do without losses and in this case.

If you still have cracks or other damage when disassembling the battery, you should not be upset, since this type of plastic is well lend itself to gluing dichloroethane.

The purpose of all parts and assemblies of the tool. as they are called

If an electric screwdriver has broken down, then before repairing it, you need to figure out what specific detail was out of order. To find out the malfunction on your own, you need to understand the purpose of each node and its constructive parameters.

  • Start button. it is with it that the tool begins with it. This mechanism performs two options. includes a power circuit, that is, it supplies voltage to an electric motor, and also regulates the number of rotation revolutions. The stronger the press press, the greater the speed the cartridge will rotate. As a revolution regulator, an electronic PWM generator is used, which is installed on the board. When you press the button, the contact of the board is moving. A field transistor is used as a contact, which plays the role of a rotation speed regulator
  • Electric motor. in portable instruments, single.phase electric motors of direct current of the collector type are used. The advantages of these units include high reliability and ease of maintenance. The electric motor consists of magnets (play the role of a stator), anchor and brushes. The use of magnets significantly reduces the cost of the cost of the unit
  • Reverse. this option is implemented by changing polarity on terminals. In order for the user to do not perform a change in polarity manually, crack contacts are used in the tool design in the form of a switch. This switch is located near the Start button
  • A gearbox is a set of gears, due to which an increase in the moment of rotation of the cartridge or a decrease in speed occurs. Shuriks use two types of gearboxes. planetary and classic. Classical are similar to those that are installed on drifts, only in screwdrivers are very rare. Planetary gearboxes consisting of ring (intermediate) and solar gears are more popular, as well as satellites. The solar gear is driven into effect from the engine shaft. Satellites are given from its rotation in motion, conveying the torque to the ring gear. Depending on the number of speeds, planetary gearboxes can be two.stage or three.stage. The more speeds, the more expensive the tool will cost
  • Effort regulator. usually 16 positions of effort are used, but there are also such models that have more. The possibility of screwing screws into a tree depends on the size of the effort. If you need to screw the screwdriver into drywall or other soft materials, then a big effort is not required for this, so the regulator can be installed in position from 1 to 7
  • Cartridge. the mechanism has a simple principle of operation. Consists of three fists that reliably fix the installed nozzles. The advantage of fast.sounding devices is a high speed change
  • Case. plastic shock.resistant structure, inside which all components are located. To repair the device, you need to disassemble the case. For this, manufacturers produce houses from two parts connected using screws
  • Battery-manufacturers produce two types of portable batteries with filling from nickel-cadmium and lithium-ion (as on mobile phones). The lithium-ionic ones are durable and more reliable, but they cost 3-4 times more than tools with nickel-cadmium batteries. Typically, two nickel-cadmium batteries are equipped with an electric screwdriver, which is associated with a short service life

It is interesting! If there are batteries that have a solid structure of the case, then this means that they are not intended for independent repair.

If an electric screwdriver broke, then it is not difficult to repair it at home if you only find a breakdown. Frequent problems of malfunctions of screwdrivers include failure of batteries, the replacement of which can cause some difficulties. Consider the mechanical and electrical malfunctions, as well as the features of their elimination on their own.

Replacing brushes on electric screwdriver “Makita”.

When working on brush electric screwdriver, over time, natural wear of the brushes occurs. They are inside the electric motor and have a graphite basis. Of course, the brilliant screwdrivers have already been invented now. What eliminates this problem forever. But back to our replacement brushes. They are not expensive and you can replace them yourself. It is required to disassemble an electric screwdriver. Replace the brushes in the electric motor.You can also make brushes with your own hands, pulling them out of any non.working electric motor and bring them to the desired size with a file. After replacing the brushes, collect an electric screwdriver back and long work for your engine.

If the cartridge is fixed, then it is removed simply-by accurate beats with a hammer on the block-corps. If the fasteners are tanned, the following steps will be needed:

  • On the hourly direction, we twist a screw with the left thread.
  • We squeeze the hexagon in a vice, put the key on it and strike with a hammer. In a similar way, the cartridge should move off the starting position. You can choose another option:
  • Put an electric screwdriver on a flat surface, on the table, for example.
  • Turn it on.
  • Observe whether the cartridge has moved from the table. When hitting a hexagon.

It also happens that all the methods listed above do not work, and then there remains one thing. to disassemble the electric screwdriver, after which:

And if garbage was found in the gearbox, then you need to do so.

Where to start?

We will analyze the tool into the components. It includes several main parts:

  • electronic engine;
  • speed speed regulator;
  • reversing motion;
  • gearbox;
  • battery;
  • Fixing element of interchangeable nozzles.

Gearbox

To disassemble the gearbox, you need to perform some ordinary manipulations: in the open body of an electrical screwdriver, we disconnect the engine and gearbox between us, dismantle the plate; we extract the details; We promote the bolts fixing the components of this unit. To make it better to launch the first gear, it is necessary to adjust the transverse of the spring in the direction of reducing it. We begin to disassemble the coupling, remove the stop ring, washers and bearing; We extract the shaft.

Cartridge

Before disassembling the cartridge, you should find the method with which it is fixed:

  • ordinary. a cone cone;
  • threaded. with a screwed cartridge at the end of the shaft with a thread;
  • Using a latch. the cartridge is attached with a fixing screw.

In the first case, the cartridge is dismantled by a means of cautious strikes on the hull with a hammer.

In the 2nd case, after removing the screw with a thread (left), squeeze the hexagon in a vice and with the help of a thrown key to make cautious blows with a hammer on it. This should help the cartridge move.

There is also a method in which an electric screwdriver is placed on the table and included. At this moment, with the contact of the hexagon with the surface of the countertop, the cartridge can move and it can simply be removed. But if this method did not work, then you will have to disassemble the entire tool, extract a gearbox and a spindle; Squeeze the knot with a vice and unscrew the cartridge using the key.

assemble, disassembled, electric, screwdriver, makita

Start button

The start button is extracted immediately with the holders of the brushes and the entire stator.

Disassembled electric screwdriver, in order to eliminate defects, replace the released details or conduct preventive measures (lubrication, removal of accumulated dust, mud of the body of the body and on the surfaces of the devices, evaluate the wear of internal parts), then you need to collect. The tool is installed in order, revolutionary dismantling and fixed using fasteners

It must be focused that fasteners can have different lengths, and when assembly, it is necessary to use the screws proper in the length

The screwdrivers from the Interskol office have proven themselves not only in operation, and in ordinary and easy maintenance.

How to disassemble a screwdriver Makita

To disassemble the Makita screwdriver, you first need to disconnect the battery. Then all the screws that hold the two halves together are unscrewed in the tool case. After that, the case is removed, and in front of the master all external components open: engine, gearbox and switch. It is also worth noting that such models often install special plates responsible for switching the modes

If you do not figure it out very carefully, you may simply not notice a small plate. After disassembly, you can immediately start repairing the corresponding part

Tags: repair of Makita electrical screwdriver, makita gearbox, lubricant, driving motor makita.

Комментарии и мнения владельцев 95

Like is a great review. Tell me the pancreatic which by the number with an asterisk you can unscrew the cartridge ?

Thanks, I can’t say, because I don’t remember, but there is no way to check now.

Maybe someone is in the know- Makitovsky is such a screwper into 14 divisions still cracking when twisting like a 6-ka- what worked?

Well done!I have two akamulators, I want to collect one of two.Nickname the batteries and choose the best.

I did it too, but two may not be enough.

So there is a very good lubricant for bearings, blue, it is not expensive! And so super, respect

There was no one at the moment, but the lubricant is good.

We, we were lucky, went to the Magaz, I bought it, it seems for 450 rubles a new motor in the same Makita, changed and happy, there are also all spare parts for Makita, including gearboxes

Repeated button for hitachi. There is something to beat, not hopeless

How to disassemble a battery

Fasteners on the lower side can vary in an amount, starting from four to six. Often unscrewed by a cross.shaped screwdriver. Screws are different lengths. This must be taken into account so that during the assembly you do not confuse them among themselves. On some modifications, you can find a non.intelligent corps. Then study the entire surface and find a special strip along which the factory gluing passes. Next, you need to take a strong knife and enter it into the groove, slightly staggering to the sides. If the case is broken to the upper and lower part, the autopsy passed successfully. Not a problem if this happens by the groove. All discrepancies can be glued with a good superglue. The upper part of the case contains several parts for the battery. On each of these components, a voltage is measured, which must certainly be in the range of the optimal level. If the difference is over 10%, such a battery needs to replace.

Each manufacturer seeks to create a tool that will be as convenient as possible in the working process, creating an extensive assortment of models. from the basic levels to professional samples.

Hitachi screwdrivers confront the excellent quality of the assembly, as well as the practicality of their tools. The Bosch company’s model collection of batteries does not differ in Bosch, from the counterparts that have a cord for connecting to 220 V. Equipped with modes switches, as well as the shutdown button and an accelerator option, Bosch screwdrivers are an excellent solution for home and for professional use. In addition, brands such as Interskol, Makita, CMI, Zubble have proven themselves perfectly.

How to disassemble an electric screwdriver Makita

In order to make out Electric screwdriver Makita, you must first disconnect the battery. Then all the screws are unscrewed in the tool case that delay the two halves, couples. After that, the case is removed, and in front of the master all external components open: engine, gearbox and switch. It should also be noted that such models often install special plates responsible for switching the modes. With not the most attentive disassembly, a small plate can simply not be seen. After disassembly, you can immediately start repairing the corresponding part.

Screwing bolts instead of teeth

After all the gears are removed from the gearbox, the inside of the device will be opened to the eye

Taking into account the specifics of the confusion, most likely the master will see that all plastic teeth on the inside were worn. This occurs with long.term operation of the device, or with a gross violation of the rules of use

Plastic teeth are rather soft, so that under the influence of temperatures and unchanged mechanical load they simply grind. This leads to the fact that the main gear has nothing to cling to and she begins to scroll at.

To repair and restore performance, you need to return the teeth. With all this, there is no need to restore all the teeth, and enough to install two steel.

A drill, small bolts and a drill will come in handy for the embodiment of a good. It is better to use a drill with diamond spraying, because it will allow to perfectly cost the extra part of the bolt for relatively kutsey time.

  • At the location of the plastic tooth, the hole in the side wall of the gearbox is drilled. You need to use a drill a bit of the smallest diameter than the dialect of the bolt. So it will be possible to screw it with effort and ensure reliable consolidation.
  • It is necessary to drill two holes on the Iskors in order to ensure reliable retention of the gearbox and measured work of the tool. Such a macar, the load will be distributed over two teeth.
  • During the drilling, it is better to direct the drill down a little, so that later the bolt does not stick upstairs. The other way you will have to process it with a bourgeois even longer.
  • Now you need to screw the bolts into the purchased holes with effort.

Electric screwdriver “Makita

Description, general information

Makita company produces various power tools, among which there are screwdrivers. The company began its history in the beginning of the 20th century, and to this day it continues to delight consumers with its high quality goods. Let’s look at the general features and characteristics of the models of this company.

Makita screwdrivers are very powerful. The average speed rate for various models is about 2300 rpm, which is a good indicator compared to other brands. The weight of most tool models lies in the range of 1.5 kg. Its small mass indicates that such a tool will work comfortably. The manufacturer also took care of the convenience of working in poorly lit rooms, making the majority of models backlight by LEDs. Separately, it is worth highlighting the type of handle to keep these tools on the weight. As a rule, they are made by rubberized, and therefore it is convenient to keep them in the brush, respectively, the workflow is much easier.

The disadvantage of these screwdrivers is the strong vibration of the handle during operation, as well as their short.lived batteries

In addition, the price of the products of this company is quite high, which is important for the domestic consumer

Consider the device of an electric screwdriver on a particular model 6271d. We present the diagram of this model in the figure below.

Scheme 1

  • Switching lever
  • The hub of the case
  • Branded plate
  • Screw
  • Spring
  • Right switching lever
  • Start button
  • Contact terminal
  • Screw
  • Fasted cartridge
  • Reducer assembly
  • Electric motor
  • Screw
  • The hub of the case
  • Charged knot
  • Battery

Modern electric screwdriver is a high.tech device. Important structural elements:

  • Removable battery
  • Rubbed handle handle
  • Powerful electric motor
  • Metal planetary gearbox
  • Smooth start button
  • The reverse switch button
  • Twisting control regulator

These are the main components of the design of the electrical screwdriver, which are included in the basic package of any model of electrical screwdriver.

Dismantling of electric screwdriver “Makita”

To disassemble an electric screwdriver, you will need a cross screwdriver and a little personal time. To disassemble the electric screwdriver completely, you need:

  • unscrew the screw screws;
  • remove the composite mechanism of the start button;
  • Remove the electric motor with the gearbox;
  • disconnect the gearbox from the engine, promoting the bolts consolidating them.

To disassemble the battery of an electric screwdriver, you need to spin the bolts connecting the housing, or divide the joints of the body on a glue basis using a soldering iron. Inside the battery there are several nickel-cadmium batteries having a certain container and loading charge. In the case of repairing the battery, they are required to replace them with new.

The cartridge changes using a screwdriver and a hexagonal key. First, you promote the fastener screw in the cartridge with a screwdriver, rotating it clockwise. Then the hexagon is inserted, the reverse button is turned on, clamped, and then the cartridge is easy.

Features of the design of the tool

Electric screwdriver is a hand.made electrical tool for twisting or twisting the mounting elements of a screw type. Its direct purpose. work with screws. Quite often, an electric screwdriver is used as a drill (for drilling), which leads to its failure. The fact is that this apparatus has a mechanism for inhibition of the rotational moment with excessive load, and the speed of rotation of its cartridge is significantly inferior to the speed of rotation of the drill cartridge. This creates overloads that can lead to breakdown and wear of parts.

Almost all such devices have the same principle of operation and differ only in the design of the case and the placement of elements. Any screwdrivers includes a case, a working tool (cartridge), electrical and mechanical systems. The cartridge belongs to the fist and is installed on the main shaft, on which a torque is supplied using the gearbox from the electric motor.

Electric screwdriver device: 1. switch; 2. reverse device; 3. transistor; 4. engine; 5. gearbox.

The electric power supply of the device is provided from the mains or built.in batteries. The electric system consists of an electric motor, a starting button element with a power regulator and a device that provides a reverse. The heart of the tool is a single.phase collector.type engine under a voltage of 220 V. Its launch is carried out using the capacitor, and the voltage is removed from the contact brushes.

The inclusion button is combined with a speed regulator, the basis of which is a transistor (generator) installed on the control board. With a different press of the start button, the signal opens a transistor, which accordingly changes the voltage at the input of the electric motor.

The mechanical component is the gearbox and mechanism for adjusting the force. The planetary type gearbox transmitted torque from the shaft of the electric motor to the main shaft with a decrease in the speed of rotation. The gearbox contains ring and solar gears, satellites and drive. The ability to control the speed of the shaft depends on the number of steps (satellites). Redactors with 2-3 steps are usually used.

The force regulator provides the desired load on the screw under different conditions of the tool. Up to 16 positions are provided, which optimizes the screwing of the screw into the material of various densities. The mechanism relieves the load when the screwdriver is completely twisted. In the mechanical subsection of an electric screwdriver, an important role of bearings should be especially noted that ensure the smooth course of rotating parts.

Where Makita power tools are manufactured

Since the products of the Makita brand are carried out under a license in several countries, you need to know how to determine the factory manufacturing by the number indicated on the device and distinguish it from the work of a private entrepreneur. The manufacturer will be indicated on the nameplates fixed on the tool case and the case for storage

Original marking and the country where there really is:

Marking Country
A USA (USA)
D Germany (Deutschland)
E Japan (japan)
G UK (GB)
R Romania (Romania)
Y/K China (China)

Now on the market you can find “gray” models of electrical appliances. They are original, but not all labeling is present on them. The main difference is that such Makita tools are imported into the country illegally. Even in spite of their authenticity, these models are not supported by the manufacturer. Therefore, there will be no warranty repair.

Types of bits for screwdriver: like a chosen

To choose the right nozzles, you need to study their varieties. First determine the type of tail shape and diameter. It happens from 1/4 to 1 inches.

assemble, disassembled, electric, screwdriver, makita

Bit for drywall has a stubborn limiter

Combined bits have two types of shank or one shape, but of different sizes. For example, a slotted shank and asterisk.

Determine the length of the bit that you need for work. It ranges from 10 to 200 mm.

Depending on the shape of the tail of the nozzle, they have a certain marking:

SL (SLOT). slotted; PH (Philips). cross.shaped universal; Pz (POZ is an important characteristic of the steel brand from which a bat is made. The nozzle may have a snake coating

The strength of the equipment depends on this. The main types of steel and coatings that should be preferred:

  • CR-V-chrome-vanadium steel. The most common, with increased hardness;
  • CR-MB-chrome-molibden steel. It is less common. Very durable material;
  • Ni. nickel coating. Increases corrosion resistance;
  • WC-carbide volframe coating. Increases strength;
  • Tin-nitrite titanic yellow coating. Increases strength.

Tin. coating to increase strength

Makita 6270D electric drill repair and refurbishment

The nozzles differ depending on the purpose:

Given all the considered parameters, you can easily choose the necessary bits.

How to repair an electrical screwdriver button if it does not work detailed instructions

To diagnose and repair the screwdriver, you will need the following tools:

As a result of the active use of any power tool, dirt will inevitably accumulate inside his body.

  • We disassemble the tool case. To do this, disconnect the battery, unscrew all the screws (they can be hidden behind the decorative pads that you will have to remove).
  • Check the state of health of the electric motor. To do this, disconnect the two power supply from the control unit and connect them to the battery contacts (the engine should start working).
  • We disassemble the screwdriver button. To do this, squeeze the plastic latches and separate the two parts of the button case.
  • We conduct a visual inspection of the state of the button for pollution and damage.
  • Next, you need to carefully assemble the screwdriver button, install it in place and test.

If the cleaning of the control unit has not worked, it is necessary to replace the entire button block.

Disassemble the screwdriver (the process is described above) install the new button instead of the old one; Connect the engine to the button terminals (polarity in this case is not required); Assemble a screwdriver, carefully placing the wire in the housing.

It is very important to choose a button for a specific screwdriver model, because with all the external similarity and visual accordance, the part may not fit in the grooves. Typically, new buttons are sold complete with battery terminals and transistor

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How to disassemble a screwdriver Makita

To disassemble the Makita screwdriver, you first need to disconnect the battery. Then all the screws that hold the two halves together are unscrewed in the tool case. After that, the case is removed, and in front of the master all external components open: engine, gearbox and switch. It is also worth noting that such models often install special plates responsible for switching the modes

If you do not figure it out very carefully, you may simply not notice a small plate. After disassembly, you can immediately start repairing the corresponding part

We disassemble the battery with a spatula or stationery knife

For those who are not used to working with a kiyanka and want the process of disassembling the battery to look more quiet and gentle, you can offer to use a small metal spatula or stationery knife. The main thing is that they do not have sharp edges, like a large screwdriver, which can easily damage plastic.

This is interesting: how to correctly charge lithium.polymer battery?

At first, you should completely walk around the perimeter of the entire block to loosen the seam, and only after that you can start “hill” flexible plastic with a small screwdriver. The method is no less painstaking than the first, and if a person is not experienced enough, damage to the plastic case may remain damage

However, if you work as carefully as possible, there is an opportunity to do without “losses” in this case

Makita cordless drill machine repair. #cordlessdrill #drill machine #tools #power tools

Types of batteries and their differences

Of all the types of batteries that industry produces, only three types are suitable for these criteria:

Nickel-cadmium appeared before everyone else and showed good operational properties. Such a battery has a voltage 1.35 in 1.0 in. Here and further we indicate the first rated voltage, and the last. voltage at the end of the discharge cycle. Ni-CD have the number of cycles of charge/discharge lying within 100-900, it depends on the quality of materials and the operating mode of operation. Ni-CD is also characterized by a very low internal resistance, they are almost not warming when charging, they are stored for a long time.

Another type: nickel-metall hydride battery. These batteries were offered as a replacement for Ni-CD. Justification was the shortcomings of traditional batteries with cadmium. In the theory, Ni-MH is good: has a greater energy intensity (up to 300 VTH/kg), is not subject to memory effect. Voltage 1.25 in 1.1 V, number of charge cycles 300-800. Ni-mh of the old type for the year of storage are completely self-discharge. It is recommended to store them at a low temperature, from 0 to 20 degrees Celsius. A new type LSD NI-MH type battery (Low Self-DischaRge), as their name shows, have a small self-discharge and are less warming when charging.

Disadvantages: Ni-MH batteries is 10% of the category during the first day, and significant heat release during charging.

Li-Ion batteries have voltage 3.7 in 2.5 V, but in reality it is a little more complicated, it all depends on the mode of use of the battery. The number of charge cycles is approximately 600, but this is provided that no more than 20% of the capacity is taken from the battery. Lithium-ion batteries really do not like deep discharge. From this they quickly fail. The internal resistance of Li-Ion is very small, 5 15 million. Self.discharge of about 1.6% per month with full charge and lack of load.

Disadvantages: high cost, limited shelf life, independent of use. The danger of an explosion and fire when incorrectly appeal.

Quick.packed cartridge “Makita

Such a cartridge is used for a clip of bats with a cylindrical shank. This cartridge distinguishes the ease of installation. It is installed literally in one movement of the hand. Used for drills with a diameter of one to ten millimeters. This is a mobile structure in the tool, so it often breaks. To disassemble it, you need to read the tips described at the beginning of the article on disassembling the cartridge using a hexagonal key and a crossroads. The price of this product is about 20 at. e.

The material of this article was voluminous. Here we described all the possible problems that arise during the operation of screwdrivers. They told how to eliminate them on their own, separately talked about different structural elements that form the basis of any electrical screwdriver. The materials of the article include the diagrams of the gearbox and the general device of the electrical screwdriver. We hope that the information will be useful to you.