What is an impact screwdriver for?

Rules for working with the tool

Having bought a screwdriver, read the operating rules so that it will last a long time. Charging is required immediately. How to properly charge the battery of a screwdriver? It depends on the type of charger.

Nickel-cadmium are charged up to 3 times. The new power supply does not have full capacity, charging increases it to full capacity. During operation, the subsequent replenishment is performed after the power has been reduced to a minimum level.

Lithium-ion batteries have no memory effect, so they are powered at a convenient time, without bringing them to final discharge.

Pay attention to the ambient temperature to ensure the device is properly charged. Its range is 10-40 degrees Celsius.

For trouble-free battery operation, follow these recommendations:

  • do not allow overheating, this has a bad effect on the operation of the instrument, if this happens, stop work and cool the device;
  • the battery is disconnected from the apparatus and stored;
  • with rare use, the battery is charged no more than 1 time per month;
  • when you turn it on for the first time, you cannot completely discharge the battery, a drop in charging will be indicated by a decrease in the speed of the device.

The implementation of these points will allow you to competently use the unit.

How much to charge the battery? The charging time is given in the passport. Often a display system is included with the charger. She monitors the charging process and determines its end. Usually the whole procedure lasts 7 hours.

For home use

impact, screwdriver

To quickly disassemble household appliances, a unit in a car or screw a couple of sheets of drywall at home, a small capacity in Ah and a voltage of 12 V is enough. By the type of battery, for household use, is Li-Ion suitable, which holds a charge better and is always ready to work? even after long-term storage. It is optimal to have two batteries and alternately install them on a screwdriver, this will increase the autonomy time.

What is an impact screwdriver for??

Impact screwdriver is designed for efficient drilling of concrete walls in order to screw in screws and then install other fasteners. Rotation and directional impacts instantly create a hole, eliminating the need for multiple tools and time-consuming work.

The unit is compatible with various attachments, which means that the scope of its application is significantly expanding. By attaching a hole saw instead of a drill, the owner will be able to use the device to cut various elements and structures.

Battery selection based on application

So, having thoroughly examined all the key factors, we will discuss with which battery to choose a screwdriver for home and professional activities. This will help you not to overpay and have a reliable tool at hand.

How to choose and what to look for?

  • Pay attention to power. Depends on battery voltage. The higher the indicator, the easier the screwdriver copes with ice and various obstacles. The optimal value is from 18 V. If finances allow, then the best option is 36 V.
  • For torque. The normal parameter is 50-70 Nm, the best is 80-90 Nm. This makes it easier to drill the hole.
  • Decide on the type of battery. Lithium-ion batteries are popular. They are durable, hardy, have a longer battery life.
  • With options. The second handle for a more comfortable grip, an adapter for fixing the screwdriver to the ice ax will not be superfluous.

Battery for a screwdriver: how to choose and use the right one

02/17/2020 37,410 Views

  • Types of screwdrivers
  • How to choose and what to look for?
  • Everything about battery-powered screwdrivers: pros and cons
  • What is an impact screwdriver for??
  • Battery selection based on application
  • For home use
  • For daily use in production or repair work
  • Rules for working with the tool
  • How to properly charge a new battery?
  • Transformer for screwdriver B
  • No. Screwdriver complete set and bit types

Everything about battery-powered screwdrivers: pros and cons

The main difference between the cordless screwdriver and the network model is the absence of a cord. Autonomy of work and non-attachment to an outlet are the main advantages of a tool with a battery inside.

The advantages of the device also include:

  • Mobility. The tool and the charging battery are in the same housing, no additional elements are needed for operation. It is enough to take the device in hand, and it is already ready to work. Can be moved anywhere.
  • Compactness. As a rule, household autonomous screwdrivers are small in size. This makes the device especially convenient in hard-to-reach places.
  • Versatility. Technique replaces screwdriver and drill.

In practice, a cordless instrument is indispensable in objects without electricity, when it is necessary to frequently move or climb to a height. The device can be operated outdoors or indoors.

The only drawback here is the need to periodically charge the battery. Manufacturers are trying in every possible way to solve this problem, for example, offering 2 batteries with the tool. While one is in the working process, the second restores energy.

For daily use in production or repair work

In the case of professional everyday use, you need a powerful 18-36 V battery with an Ah capacity. For work with hard materials or frequent work in cold conditions, choose the NiCd type. But if the work is always done in a warm place and the tool is needed for screwing fasteners in medium density materials, then Li-Ion will do.

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Design

According to the principle of power supply, power tools are battery and mains, operating at a voltage of 220 V. Despite these differences, the tools are similar in appearance and internal structure. They consist of the following parts:

  • Plastic or metal case.
  • Clamping chuck for various attachments.
  • On / off buttons.
  • Reverse switch, which allows you to adjust the screwing in and out of fasteners.
  • Speed ​​regulator that controls engine speed.
  • Switch-on locks.
  • Tightening force adjustment switch.

Inside the housing there is an electric motor with a board and a capacitor, a clutch and a gearbox.

Technical specifications

To know why you need a screwdriver and how to use it, you should first find out its technical characteristics. The most important tool parameters are:

  • Torque. Indicates the force developed by the tool during rotation. Helps to determine the maximum screw-in size or diameter when drilling various parts.
  • Rotational speed. the lower the spindle speed, the more dense the material can be drilled. At lower rpm, a larger diameter hole can be obtained.
  • Chuck type. there are key, with a hex shank and keyless.
  • Weight. The heavier power tool is more powerful and is more commonly used as a drill when working with higher density materials. To screw in or unscrew screws and screws, models with a lower weight are used.
  • Impact function. used when working with concrete or brick walls.
  • Pulse mode. used for “stubborn” fasteners.

Types of screwdrivers by battery type

Devices operating autonomously have different types of batteries. They are:

  • Lithium-ion. their advantages include good capacity, low self-discharge. They charge fast enough. The main disadvantage is poor resistance to high temperatures.
  • Nickel-cadmium. well adapted to work at any temperature, the number of charging cycles reaches 1000, they are discharged with a high current. Disadvantages. heavy weight, “memory effect”. They harm the environment.
  • Nickel-metal hydride. environmentally friendly. Lighter than nickel-cadmium, minimal memory effect. Of the minuses. intolerance to low temperatures, a double reduction in the number of recharges (up to 500).

You can also note the division of batteries according to battery capacity and operating voltage.

Important! Nickel-cadmium cells are stored in a discharged state, and nickel-metal hydride cells must be kept charged. They also require regular recharging.

What is a screwdriver for and how is it used

Men often ask the question of what a screwdriver is needed for and whether it is necessary to buy one for use at home. To give an answer, you first need to consider its functionality, determine how it differs from an electric drill.

  • What is a screwdriver for and what tasks it performs
  • Design
  • Technical specifications
  • Types of screwdrivers by appointment
  • Types of screwdrivers by battery type
  • How to choose a device

Types of screwdrivers by appointment

There are household and professional tools:

  • The former are used when working with soft and pliable materials. drywall or wood. With their help, home furniture is repaired, shelves are fixed, windows and doors are repaired.
  • powerful, professional, power tools are required for drilling in materials of increased hardness and density. They have high rotational speed (up to 1300 rpm) and increased torque (this makes them more powerful).

Screwdrivers are also divided by type of power supply:

  • Network. power supply 220V.
  • Rechargeable. autonomous power supply.

Important! It is more convenient to use tools without being connected to the power supply. You can work anywhere and anytime.

What is a screwdriver for and what tasks does it perform

Maintaining comfortable living conditions in a house or apartment means constantly making small repairs. Power tools make work easier. A screwdriver became one of these “assistants”. He copes with such common tasks:

  • Installation work with self-tapping screws, screws, screws.
  • Drilling holes in walls, doors, furniture.
  • Installing or removing fasteners (dowels or anchors).

Important! Light weight and autonomy in work. the advantages of the tool.

How to choose a device

To choose a screwdriver, you first need to familiarize yourself with what this type of tool is used for. for professional or domestic purposes, what work can be done with it.

Someone relies on knowledge of the technical characteristics of the device when buying, someone prefers to hear the advice of the seller. Some pay attention to a well-known brand, use advice from the World Wide Web. Personal experience, professional advice, knowledge of the technical parameters of devices will help you choose a screwdriver that will become an indispensable assistant in household chores.

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Why do you need an impact screwdriver

In the arsenal of each owner there is a tool that allows you to tighten or unscrew a screw, a self-tapping screw to make minor home repairs, assemble furniture, drill a wall for a new picture. Automatic electric drills greatly simplify the process, allowing you to drill almost any surface without much effort and unnecessary debris.

Now on the market there is a huge selection of tools from different manufacturers, models, wired and mobile, for various surfaces and with a different principle of operation. According to experts, among the colossal variety of drills, the impact driver is the most productive, convenient, versatile and multifunctional.

Advantages and Disadvantages of Impact Tools

For many buyers who are faced with the choice of which drill or wrench to choose, the question arises how the impact driver is superior to the impactless model.

  • The increased torque allows the technician to apply significantly less effort when working with the tool, without pressing on the body itself. For most models, the values ​​of this indicator are in the range from 80 to 250 N / m.
  • The possibility of using not only for self-tapping screws, but also for working with nuts. With the free running of the product, the screwdriver works in the standard mode, when resistance occurs and the unhindered movement of the nut on the thread is reduced, the mode automatically switches to the impact mode.
  • Since there is no need to apply excessive force to tighten the bolts and screws, the caps will not deform. The power of the tool is also sufficient for reverse action. unscrewing parts that have changed their original shape or rusted;
  • The ease of use of the tool also helps to relieve stress on the user’s hand and wrist.

Limitations and disadvantages of impact-producing screwdrivers include a decrease in the tightening speed during impact mode, since the actions of the tool concentrate on the turning moment and on the quality of work. Also, only hex chucks can be used. The degrees of twisting must be controlled independently, since there is no limiting clutch. There is also an increased noise level when working at high speed.

Differences between a traditional drill and an impact type screwdriver

Before many craftsmen who choose tools for home use or for work, the question arises, what is the difference between the not yet well-known impact-type screwdriver and the usual standard electric drill. With a similar appearance, the main difference is the principle of operation:

  • In the first case, the tool has an impact mechanism that drives the drill, while increasing the torque;
  • A standard electric drill is based on a two-stage gearbox.

This distinction is starting to show itself, giving an advantage to the percussion type tool when working on hard and particularly difficult surfaces. When the drill senses resistance, a series of powerful and fast impacts are sent that multiply the torque and tighten the fastener much easier.

It is also worth distinguishing between an impact driver and a drill. With the same principle of operation, they have a different direction of impact. For a drill, this is longitudinal, and for a screwdriver, it is perpendicular to the direction of rotation. The process of action of the tool is most clearly represented as small blows with a wrench while tightening the nut.

Applications

The fundamental difference between percussion models and standard ones is their compatibility with other devices. You can use a hole saw in parallel, and also replace the functions of a conventional drill for drilling holes using special attachments.

How to choose?

When choosing a specific model of impact screwdriver, pay attention to the smallest details. The first thing that people usually pay attention to is the type of food. Pneumatic models will definitely not be needed at home, but electric ones are network and battery models, as mentioned above.

The network option is good for working in an equipped room, it is most appreciated for its almost unlimited power. Having given preference to just such a device, evaluate its cable. it must have a considerable length and thickness, have good insulation and not raise doubts about the strength of the place where it enters the unit.

In the case of the battery model, there are more selection criteria. First of all, you need to find a balance between a large battery capacity, which extends the battery life, and the weight of the device, because a capacious battery always weighs quite a lot.

Another point is the choice of the type of battery: today the most common lithium ion models, but nickel-cadmium are also found. The first ones are good with a small mass with a significant capacity, they allow charging at any time, but they are more expensive than the main competitor and can wear out quickly at low temperatures. The advantages of the nickel-cadmium solution completely eliminate the disadvantages of the lithium-ion version. such a battery is cheaper and not afraid of frost, but it is heavy and environmentally hazardous, and most importantly, it must be completely discharged and then fully charged, otherwise the “memory effect” will provoke rapid wear of the carrier.

Batteries can produce different voltages, but for periodic household work, you can choose models with a value in the range of 12-18 V.

At high voltage, the engine power also increases, but for home use, sky-high rates are not needed: 500-700 W is enough, otherwise the tool will be heavy and unreasonably expensive.

Screwdriver chucks, in which replaceable nozzles are attached, are quick-clamping and key. The first can be organized in different ways, but its advantage is that it can be serviced with bare hands. The key cartridge has a characteristic rim; a special key is needed to maintain it, which is not always convenient.

Since we are talking about the cartridge, an important criterion is the maximum diameter of its opening. the larger it is, the more different nozzles can be used.

Maximum torque is a measure of how hard the nozzle will rotate. This indicator does not always directly depend on the power of the motor, sometimes it can be increased due to the gearbox, but it is always desirable that the maximum torque be quite high. Models with stepless torque control are in priority, since they are more sparing for fasteners and surfaces that are drilled.

The last, but very important criterion for choosing a tool is its weight. Unfortunately, it is impossible to create a lightweight, and at the same time powerful and multifunctional device, therefore it is necessary to decide which is more important: lightness or performance. Keep in mind that with constant daily work, the first factor may be much more important.

Operating rules

The use of an impact screwdriver will be safe and as effective as possible only if it is done correctly. Obviously, the first tip is to read the instructions before use, but there are other reasonable tips for use.

For example, if possible, do not set the equipment to maximum torque, because many fragile materials with a treated surface can simply be torn from this, and you will ruin the workpiece. In addition, working at maximum speeds up tool wear, not to mention the fact that in this mode you need to hold it tighter, otherwise it may even be possible to get injured.

You Need This Tool. Episode 4 | Impact Screw Driver

The modes of operation, by the way, are described in the instructions for a reason. each of them assumes optimal settings for performing this particular task, and for another it may not be suitable. So, drilling is needed to make holes, and the screwdriver mode is to screw in fasteners, when used, on the contrary, efficiency decreases, but the risk of injury increases.

Often, many people have a question, what is the better impact screwdriver in comparison with its shockless counterpart, and is it better at all??

When evaluating the advantages that characterize an impact driver, it is important not to be confused with a tool such as an impact drill or cordless hammer drill, since the purpose of the screwdriver is clearly defined in its name.

What is it and what is it for?

An impact screwdriver is a special power tool that allows you to most effectively drill walls in order to drive screws and install other fasteners. Unlike bumpless models, this relative novelty in the domestic market makes a hole not only due to the actual rotation, but also with the help of directional blows. The latter usually do not have a permanent character. the corresponding mode is turned on at the request of the operator or automatically if the drill runs into an obstacle of particular hardness. In a sense, it’s a little jackhammer.

Impact screwdriver. the device itself is more complex and “smart”, therefore, a certain versatility should not be surprising. This means that the tool, as a rule, is fully compatible with various attachments, due to which the scope of its potential application significantly expands. instead of a drill, you can attach, for example, a hole saw or a mixing attachment.

A distinction should be made between an impact driver and a similar drill. The latter, being focused on making holes, assumes a longitudinal direction of impacts, while a screwdriver strikes as if longitudinally, due to which it significantly increases the torque.

It is logical that such a tool is somewhat more expensive than non-impact models, but its purchase is often justified even at home. the external, load-bearing walls of multi-storey buildings are usually distinguished by the highest strength, which only an impact screwdriver can overcome.

The device is also appreciated by professionals who drill walls or various parts every day. according to them, for all its assertiveness, the drill of an impact driver usually does not cause significant damage to the fasteners, increasing their durability. This characteristic is especially valuable in the context that the same tool is often used to assemble furniture.

The classification of impact screwdrivers is not so extensive, but it can still drive many inexperienced consumers into a dead end. Most of all, the logic in dividing tools into drills, screwdrivers and screwdrivers confuses, but in fact everything is extremely simple here: the mechanism is generally the same for everyone, and the exact name depends on the nozzle.

So, a drill is usually equipped with a drill for making holes, and a screwdriver and a screwdriver at the same time know how to screw in fasteners. Some models imply a simple replacement of nozzles, therefore they can have complex compound names like “screwdriver-drill”, but if such multifunctionality is not provided, the unit is called the most accurate term.

Often, when choosing, beginners are also confused by the fact that the device is supposedly electric and pneumatic. Electric models are the most common, especially at home, but pneumatic ones are perhaps very rare models that will definitely not be in demand at home, the main places of their use are various service stations and tire fitting enterprises.

Since the screwdriver is powered by electricity, it is impossible not to clarify that it can be both mains and battery. The first is good for minor home repairs or daily work in a well-equipped workshop, because it is lighter, and the master does not need to constantly remember to charge the battery.

However, it is the battery version that is the uncontested solution during the construction process or for outdoor use when the working site does not imply the presence of functioning outlets.

Impact screwdriver and its advantages

  • Large amount of torque, in some models reaching 250 Nm.
  • Convenience when tightening screws and screws. With a low resistance level, the tool is able to work in a shock-free mode, developing a continuous force required for twisting. If the resistance increases, the tool switches to impact mode when tightening is performed with a high torque.
  • There is no need for large pressing forces, which saves the surface of the screw heads from “licking”. This feature of the tool makes it possible to unscrew the screws, the head of which has already begun to bulge.
  • Reduces the amount of torque on the user’s wrist.

How the cordless and cordless impact driver works

Electric impact screwdriver, whether it is mains or cordless, provides a tangential impact in a plane perpendicular to the axis of rotation. In other words, when screwing in the screws, the force developed by the tool is not continuous, but is a high-frequency series of small impacts. Its work is similar to what happens, for example, when putting an open-end wrench on a nut and tapping this key with a hammer.

The total force that a cordless or cordless screwdriver of this type develops is the sum of the forces of the blows it makes during a unit of time.

Externally, the impact driver is very similar to its non-impact counterpart:

Conventional impact screwdriver

Why do you need an impact screwdriver

Higher torque with less pressure on the tool by the operator.

Based on this, you can immediately emphasize the advantages and disadvantages of tools of this class.

Distinctive features

When deciding whether to choose an impact or a shockless model of a screwdriver, first you need to figure out how they differ.

Many consumers who have managed to evaluate the operation of the striking mechanism will say that such a unit is better, and this is how they are ready to substantiate their point of view.

  • Directed impacts increase the torque of the impact tool to a range of 80-250 N / m, making it possible to break through the most difficult obstacles. It is significant that in the process there is even no need to firmly press the case against the wall. the tool bites into it even without significant pressing.
  • Without the need for constant physical effort applied to the tool, the wrist and hand of the master are much less tired, which allows you to increase the same productivity.
  • Considering that even a solid wall is not able to successfully withstand the onslaught of such a tool, it usually does not deform the fasteners, which will allow it to be removed without additional efforts in the future. over, many models also provide for the reverse function of removing old fasteners from the walls, and even the fact that, due to long-term use, it has experienced strong deformation.
  • The screwdriver works not only with bolts, but also with nuts, in each case achieving the most tight tightening. A “smart” car usually automatically switches from shockless mode to shock mode when it senses that the nut has become tighter at a certain moment.

Unfortunately, this solution also has certain drawbacks, which may never allow it to completely supplant unstressed models. Thus, an impressive twisting speed is observed only in the shockless mode; when switching to impacts, it significantly decreases.

Chucks for such a tool are not suitable for any. you need strictly hex. Most models do not have a limiting sleeve, so the degree of tightening must be carefully monitored by the operator, otherwise damage to the wall or parts will not be done. Finally, at high speeds, such a unit is capable of producing deafening construction noise, therefore constant work with it requires the mandatory use of protective equipment.

Disadvantages of impact screwdrivers (wrenches)

  • Low drilling speed when switching to hammer mode.
  • Inapplicability of jaw chucks (only hexagons) with rare exceptions.
  • Inapplicability of the torque limiting clutch, due to which the tightening process has to be monitored all the time independently, which is not always convenient at a high speed of rotation of the tool shaft.
  • Increased noise in shock mode.

And in order to better visualize the difference between an impact screwdriver (nutrunner) and a conventional one, we will summarize their main technical characteristics in one table:

One of the original criteria for assessing the masculinity of the owner of the house is considered to be his ability to drive a nail (or, in a modern way, screw a screw) into the wall. Without this elementary skill, it will not be possible to hang a shelf, decorate a room with a picture, or install a curtain rod.

An electric screwdriver is called upon to cope with this task faster and without unnecessary effort, and the impact screwdriver is especially often praised, but not everyone understands what it is and why.

Why do you need a cordless impact screwdriver?

Compared to other rotary devices, the cordless impact driver has the following advantages:

  • high maximum torque;
  • reduces the load on the hand of the master;
  • does not require increased downforce;
  • has the ability to drill holes;
  • automatic switch from normal to shock mode;
  • long battery life.

The disadvantages include the following:

  • lack of manual torque control;
  • the need to use special bits;
  • drills holes in fragile substrates such as wood.

An impact driver is a versatile tool for any home DIYer, often referred to as an impact drill driver. However, when purchasing it, it is not so easy to make the right choice. Before you pay money and take the screwdriver home, you need to analyze the device according to the following criteria:

  • maximum operating time without connecting to the network;
  • Li-Ion battery type;
  • power of the tool, which varies from 24 to 36 V;
  • torque not less than 70 Nm;
  • comfortable feeling;
  • weight no more than 1 kg;
  • a proven brand (Bosch, Makita, Metabo).

How to use an impact driver to release seized screws

Cordless impact drill

Probably, many have an idea of ​​what an impact drill is. A conventional drill is a tool designed to drill holes in tough materials. It can be manual, pneumatic or electric. Among the home craftsmen, the most common device is with an electric drive. Today, these drills have the additional battery and impact capacity that should help or accelerate the drilling of a hole in a stubborn wall. With the help of special nozzles, this electrical appliance can unscrew or tighten fasteners, which include bolts, nuts, screws or self-tapping screws. However, it is not easy to do this, as the torque of the apparatus is too high, even if the rotation speed is set to low.

An impact drill has the same properties as a conventional drill, but has the ability to move the rotary body along its axis. This means that when drilling materials such as high-strength concrete, this function must be applied, and then the drill not only rotates the drill, but also makes a large number of blows to it.

Cordless hammer drill: general information

Hand tools are needed to solve the problems of fastening or disassembling, drilling holes or destroying old fragile plaster. For example, hammers, screwdrivers, pliers and punches, but it is better to use electrical appliances. These devices will save you time and energy, and will help you to accurately perform all the work. There are screwdrivers, impact drills, and screwdrivers. Which one is better for home or professional use??

Impact cordless screwdriver: what is it

A screwdriver is a handy electric tool that allows you to quickly unscrew and tighten bolts, nuts and screws. Modern screwdrivers are most often equipped with a battery, which makes it possible to use the device over the entire area without being tied to the length of the cord. These screwdrivers have the following advantages:

  • small mass of the device, which makes it possible to easily hold it in one hand;
  • low rotation speed, which allows you to unscrew the fasteners and not “lick” its notches;
  • the ability to adjust the torque. for more convenient screwing of fasteners of different sizes;
  • the presence of a reverse stroke. for unscrewing the fastening parts.

The main disadvantages of cordless screwdrivers are reduced to one thing. This is a low power. up to 20 V for unscrewing a bolt or self-tapping screw firmly seated in the base. To solve this problem, an impact screwdriver was developed. This tool has a higher power. up to 36 V. There are both mains and cordless versions. The principle of operation of such a device lies in the fact that when, for example, a self-tapping screw in a tree is jammed, the electrical device automatically exerts a shock load on the fasteners, loosening it. over, this happens not along the axis of the screw, but along the axis of rotation. The device stops, abruptly gives the instant maximum rotation speed to the fastener and lowers it to normal speed. The cycle of such operations is repeated until the screw is unscrewed. As a rule, the impact screwdriver quickly copes with this problem.

Thus, we can say that an impact drill-screwdriver is an irreplaceable thing in the range of electrical appliances of any owner, as it easily twists and unscrews fasteners of any complexity. The device makes holes in sufficiently strong walls, works for a long time and does not strain the hand, but sits comfortably in it, unlike an impact drill, which is difficult to install and dismantle fasteners. It is heavy and requires the use of both hands.

Impact drill screwdriver

Impact cordless screwdriver: what is it

A screwdriver is a handy electric tool that allows you to quickly unscrew and tighten bolts, nuts and screws. Modern screwdrivers are most often equipped with a battery, which makes it possible to use the device over the entire area without being tied to the length of the cord. These screwdrivers have the following advantages:

  • small mass of the device, which makes it possible to easily hold it in one hand;
  • low rotation speed, which allows you to unscrew the fasteners and not “lick” its notches;
  • the ability to adjust the torque. for more convenient screwing of fasteners of different sizes;
  • the presence of a reverse stroke. for unscrewing the fastening parts.

The main disadvantages of cordless screwdrivers come down to one thing. This is a low power. up to 20 V for unscrewing a bolt or self-tapping screw firmly seated in the base. An impact screwdriver was developed to solve this problem. This tool has a higher power. up to 36 V. There are both mains and cordless versions. The principle of operation of such a device is that when, for example, a self-tapping screw in a tree is jammed, the electrical device automatically exerts a shock load on the fasteners, loosening it. over, this happens not along the axis of the screw, but along the axis of rotation. The device stops, abruptly gives the instant maximum rotation speed to the fastener and lowers it to normal speed. The cycle of such operations is repeated until the screw is unscrewed. As a rule, the impact screwdriver quickly copes with this problem.

Benefits of Impact Screwdrivers (Impact Wrenches)

  • High torque! For most cordless models, the torque range is between 80 and 250 Nm!
  • Convenient for tightening nuts. At low loads, the tool operates in a shock-free mode with continuous force (quickly tightens the nut along a free thread), and with an increase in resistance, it switches to an impact mode (tightening with a high torque).
  • There is no need to apply a large pressing force to the tool when tightening screws and self-tapping screws, thereby saving the caps from “licking”. Also, with its help, you can unscrew those screws and self-tapping screws, the caps of which have already begun to bully.
  • Reduces torsional stress on the operator’s wrist.

Difference between Drill Drivers & Impact Drivers

Cordless impact drill

Probably, many have an idea of ​​what an impact drill is. A conventional drill is a tool designed to drill holes in tough materials. It can be manual, pneumatic or electric. Among the home craftsmen, the most common device is with an electric drive. Today, these drills have the additional battery and impact capacity that should help or accelerate the drilling of a hole in a stubborn wall. With the help of special nozzles, this electrical appliance can unscrew or tighten fasteners, which include bolts, nuts, screws or self-tapping screws. However, it is not easy to do this, as the torque of the apparatus is too high, even if the rotation speed is set to low.

An impact drill has the same properties as a conventional drill, but has the ability to move the rotary body along its axis. This means that when drilling materials such as high-strength concrete, this function must be applied, and then the drill not only rotates the drill, but also makes a large number of blows to it.

Thus, we can say that an impact drill-screwdriver is an indispensable thing in the range of electrical appliances of any owner, as it easily twists and unscrews fasteners of any complexity. The device makes holes in sufficiently strong walls, works for a long time and does not strain the hand, but sits comfortably in it, unlike an impact drill, which is difficult to install and dismantle fasteners. It is heavy and requires the use of both hands.

What is an impact screwdriver for?

In the arsenal of each owner there is a tool that allows you to tighten or unscrew a self-tapping screw, a screw to make small home repairs, assemble furniture, drill a wall for the latest picture. Automatic electronic drills greatly simplify the process, allowing you to drill virtually any surface easily and unnecessary debris.

At the moment, a huge selection of tools from various manufacturers, models, wired and mobile, for different surfaces and with a different mechanism of operation is presented on sale. According to experts, in the midst of a colossal contrast of drills, the most productive, comfortable, versatile and functional is the impact driver.

What is the advantage of an impact screwdriver (wrench) versus conventional

Higher torque with less pressure on the tool by the operator.

Many people often ask the question, what are the advantages and differences of an impact screwdriver (wrench) from a conventional one and who and why needs this tool? And here it is important not to confuse an impact drill with an impact screwdriver, which is sometimes more correctly called a wrench. An impact driver or wrench has a tangential impact (in a plane perpendicular to the axis of rotation), i.e. the effort to tighten screws or nuts is not applied continuously, but by a high-frequency series of small blows, as if you put an open-end wrench on the nut and started tapping it with a hammer. The total applied force is calculated as the sum of the efforts of these blows per unit of time.

Based on this, you can immediately emphasize the advantages and disadvantages of tools of this class.

Disadvantages of impact screwdrivers (wrenches)

  • Low drilling speed when switching to hammer mode.
  • Inapplicability of jaw chucks (only hexagons) with rare exceptions.
  • Inapplicability of the torque limiting clutch, due to which the tightening process has to be monitored all the time independently, which is not always convenient at a high speed of rotation of the tool shaft.
  • Increased noise in shock mode.

And in order to better visualize the difference between an impact screwdriver (nutrunner) and a conventional one, we will summarize their main technical characteristics in one table:

Differences between a traditional drill and an impact type screwdriver

Before many craftsmen who choose tools for independent use or for performing work, the question arises, what is the difference between not everyone’s recognizable impact-type screwdriver and an ordinary standard electric drill. With a similar appearance, the main difference is the mechanism of operation:

  • At the beginning, the tool has an impact mechanism that drives the drill, increasing the torque at the same time;
  • A standard electric drill is based on a two-stage gearbox.

This distinction is starting to show itself, giving an advantage to the percussion type tool when working on hard and particularly difficult surfaces. When the drill senses resistance, a series of powerful and fast impacts are sent that multiply the torque and tighten the fastener much easier.

It is also worth distinguishing between an impact driver and a drill. With the same principle of operation, they have a different direction of impact. For a drill, this is longitudinal, and for a screwdriver, it is perpendicular to the direction of rotation. The process of action of the tool is most clearly represented as small blows with a wrench while tightening the nut.