A hammer drill is a productive tool for processing concrete, stone and brick; it is required during a major renovation of an apartment. The power of the device is tens of times greater than that of an impact drill, so drilling and chiseling of hard materials is done very quickly. Rotary hammers vary in design, function and equipment. How to choose an inexpensive hammer drill for your home from the models on the market, how to operate the device correctly and safely?

What is a hammer drill and what is it used for?

A hammer drill is a tool designed for destroying hard non-metallic surfaces, drilling holes in building structural elements and cutting grooves in walls. According to its intended purpose, the hammer drill can be industrial and for home use. Difference in in this case determined by its power and equipment. The most common drive for this tool is an electric motor, but there are professional models with hydraulic and pneumatic drives.

How is it different from an impact drill?

Hammer drill- a tool for drilling holes in various materials. To facilitate the processing of hard surfaces, it has a mechanism that pushes the drill in the axial direction. Despite all its advantages, an impact drill is not designed to destroy concrete and is inferior to a hammer drill in terms of impact force. It is impossible to make a groove or a deep hole in a monolithic wall with a drill.

Drill or hammer drill: what to choose for apartment renovation

Impact drill or hammer drill - what to choose? For home use, it is enough to have a powerful impact drill in your arsenal. But when carrying out a major overhaul of a residential or commercial premises with the replacement of thermal, electrical or plumbing communications, you cannot do without a hammer drill.

• As an example, here are a number of household tasks that will be made easier and faster with a rotary hammer: dismantling building structures
• (walls, foundation elements, concrete screed, windows, doors);
• drilling holes for fastening pipe clamps, brackets, anchor bolts;

drilling large diameter holes (100–200 mm, etc.) in brick and concrete walls.

Criteria for choosing home power tools For objective and the right choice

• punch power;
• type of device;
• impact force;
• number of operating modes.

Additional criteria:

• availability of equipment;
• engine location;
• presence of a protective coupling;
• availability of additional functions;
• dimensions and weight.

Power and impact force

Power and impact force are the determining parameters when choosing a rotary hammer for a specific type of work. Conventionally, rotary hammers are divided into four groups based on power and impact force. There are no standard restrictions and norms for choosing a tool from a particular group. For household work, it is recommended to choose a tool of low and medium power; its capabilities are quite enough for repairs.

Table: groups of tools by power and impact force

Operating modes: drill, chisel and groove

The hammer drill provides three main operating modes: drilling, drilling, and chiseling. To make it easier to switch modes, rotary hammers are equipped with toggle switches. By turning the toggle switch and placing it opposite a certain marking, we determine the operating mode:

• drilling - the toggle switch is installed opposite the “drill” icon;
• drilling - the toggle switch is installed opposite the “drill + hammer” icon;
• chiselling - the toggle switch is installed opposite the “hammer” icon.

Sometimes the manufacturer equips rotary hammers with additional functions, for example, a blow with a chisel turn. This mode makes it easier to destroy particularly hard surfaces and is most often used in professional models. For home use, three main operating modes are sufficient.

Professional models of rotary hammers have a higher cost and design complexity.

Engine location: horizontal and vertical

Depending on the engine location, hammer drills are produced with horizontal and vertical drive orientation.

Rotary hammers with a vertical engine position have higher power, greater torque, and in this case the motor is cooled better. Disadvantages: heavy body weight, strict requirements for lubrication and maintenance intervals. A hammer drill of this design is better suited for work in a vertical plane: drilling holes and cutting grooves in the floor and ceiling. The tool is convenient to hold with one hand and work from the waist.

The horizontal position of the engine is optimal for work in the horizontal plane:

• installation of plasterboard structures;
• drilling walls;
• dismantling tiles;
• installation of façade works;
• wall chipping;
• drilling niches for electrical equipment.

Models of this design are simpler in design, have less weight, and are unpretentious in maintenance.

The location of the engine is not decisive when choosing a rotary hammer. For use at home, a device with a horizontal motor position is sufficient. If you need to use the tool for professional purposes, it is better to have a separate, more powerful hammer drill with a vertical motor orientation in your arsenal.

Why do you need a protective coupling?

A protective coupling is a design feature of rotary hammers (sometimes drills). The coupling is designed to protect the tool when the drill or drill becomes jammed. The coupling is located inside the device body.

It is almost impossible for a non-professional to visually determine the presence of a protective coupling on a hammer drill. Whether it is there or not can be found in the instrument’s passport. In models up to 4–4.5 kg, such a coupling is implemented due to a spring-loaded gear and a counter washer, which have projections corresponding to each other. When the maximum permissible torque is exceeded, the washers spin, producing a characteristic cracking sound.

Models of higher power hammer drills are equipped with spring-cam and magnetic protections. Professional rotary hammers are equipped with couplings that are designed and set for a certain amount of torque. Budget models of rotary hammers are often equipped with “symbolic” couplings, the moment of operation of which is difficult to predict.

Additional functions

Some rotary hammer models have additional functions. Below are descriptions of some of them:

• reverse - allows you to change the direction of rotation of the cartridge;
• soft start - a system for monitoring the magnitude of starting currents in the engine;
• automatic speed control - the electronic system maintains constant shaft speed when the load on the tool changes;
• drilling (drilling) depth limiter - a special metal rod-ruler with or without a scale, designed to limit the depth of the hole. Useful for repeated drilling to the same depth;
• vibration protection - vibration damping mechanism to protect the worker’s hands;
• safety (protective) clutch - protects the tool and the master’s hands from the body jerking when the drill jams.

Equipment: chisels, drills, concrete bits

An important criterion when choosing a hammer drill for your home is the availability of additional equipment. Buying a hammer drill without accessories may seem like a good idea, but later, buying each necessary element separately, you can pay a lot. Moreover, market prices Supplies

The most common hammer drills are those with SDS-plus chucks. Check in the instructions for the hammer drill which chuck system your model uses. These are the drills, drills and other cutting tools that should be purchased.

The equipment of the hammer drill significantly expands the range of its applications. Depending on the type of work performed and the power of the hammer drill, the equipment set includes the following list of cutting tools:

• drills of various diameters and lengths;
• drills of various diameters, purposes and lengths;
• chisels of various widths;
• channel chisels;
• crowns of various diameters;
• peaks;
• additional cam-type chuck for drilling with standard drills;
• mixer for preparing construction mixtures.

Rating of the best hammer drills for the home

Rotary hammers are produced by German, Japanese and American companies, including Bosch, Makita, Hitachy, Metabo, DeWALT, and others. Despite the fact that now all production is located in China, brand owners strictly monitor the quality of products. The section selects the most practical hammer drills for home use, their main characteristics and cost.

Table: which hammer drill to choose for your home

No.	Model	Power, W	Impact force, J	Quantity beats, beats/min	Quantity revolutions, rpm	Weight, kg	Location engine	Type cartridge	Modes work	price, rub.	Additional functions and components
1	Makita HR2455	780	2,7	4500	1100	2,8	horizontal	SDS+	drilling; drilling+impact; hit.	6890	drilling depth limiter; power button lock; reverse
2	Bosch GBH 2–23 REA	710	2,5	4400	1000	3,5	horizontal	SDS+	drilling; drilling+impact.	10960	reverse; drilling depth limiter; dust collector; electronic speed controller; case.
3	Bort BHD-901	900	3,2	4000	780	no data	vertical	SDS+	drilling; drilling+impact; hit.	5000	reverse; electronic speed controller; additional set of brushes; lubrication kit; drilling depth limiter; case.
4	Interskol PA-10/14.4R-2 (battery)	-	0,9	5500	750	1,4	horizontal	SDS+	drilling; drilling+impact.	7710	reverse; case; electronic speed controller; power button lock; removable battery;
5	DeWALT D25602K	1250	12	2840	415	6,9	vertical	SDS-max	drilling; drilling+impact; hit.	26800	drilling depth limiter; electronic speed controller; power button lock; reverse; brush wear indicator; anti-vibration system; two stages of torque adjustment.
6	AEG KH 26 XE	800	2,9	4500	1500	2,7	horizontal	SDS+	drilling; drilling+impact; hit.	11400	drilling depth limiter; electronic speed controller; power button lock; reverse; case.
7	Hitachi DH22PH	620	1,4	5600	1400	2,1	horizontal	SDS+	drilling; drilling+impact; hit.	6500	drilling depth limiter; electronic speed controller; power button lock; reverse; case.

Want to drill a hole in concrete? So that this manipulation does not take a lot of time, nerves and physical effort? This means you will need a device that will combine best qualities jackhammer and electric drill. To prevent repairs from becoming a colossal challenge for those who dare to carry them out on their own, it is worth purchasing a high-quality hammer drill for the home. For professional builders, this topic is doubly relevant. How to choose a hammer drill and not make a mistake is, of course, a complex question, but quite solvable.

Rotary hammer and impact drill: what is the difference?

A hammer drill is a drilling machine that carries out longitudinal-axial (i.e. impacts) and rotating movements of the working tool. Practice shows that very often this device is confused with an impact drill. What is the difference between these units? It lies in the subtleties of the technical implementation of the impact function: in a drill it is carried out mechanically, in a hammer drill it is carried out pneumatically. It is thanks to this that the latter is able to make holes in concrete, brick, stone, etc. much faster, while working with it requires much less physical effort than with a drill. It is worth noting that the “impact” mode seriously wears out the drill.

Rotary hammers are larger and more massive units - they are highly productive and reliable.

Tool classification: attention to operating modes

Rotary hammers, depending on their functionality, can be divided into several types:

• single-mode;
• dual-mode;
• three-mode.

The first are highly specialized professional devices. Their design is extremely simple, but nevertheless they are not suitable for home repair needs. Single-mode models support hammer drilling.

Models in which the only supported mode is impact (chipping) are called jackhammers.

More common, and therefore more familiar to the average person, are dual-mode hammer drills. In addition to hammer drilling, they feature either conventional drilling or chiselling mode.

Three-mode units provide all of the above functions.

The drilling mode is used when working with metal and wood, hammer drilling is used with concrete and brick, the impact mode is optimal for removing tiles from walls and floors.

Before choosing a hammer drill for home or work, be sure to pay attention to the functionality of the device - after all, in everyday life, you will probably need all three modes.

Design features, equipment, technical characteristics

The main characteristics by which you can judge the performance of a hammer drill are its power (measured in watts) and impact force (measured in joules). Which hammer drill is better? Of course, the one in which these parameters are higher.

Note! The impact force indicator is not always proportional to power - this is explained by the design features of the power tool.

Rotary hammers are equipped with one of two types of chucks: regular or quick-release chucks. The best option not only for professional, but also for home use is the second option. The quick-release chuck will allow you to change drills with a light hand effort, without using a special key.

Another interesting characteristic of any unit is its weight. There are light, medium and heavy classes of rotary hammers.

• lightweight rotary hammers weigh no more than 4 kilograms, their maximum power 700 watts;
• the average ones weigh from 5 to 8 kilograms, their power ranges from 700-1500 watts;
• heavy devices weigh 8 kilograms or more, their power exceeds 1500 watts.

Lightweight models are equipped with SDS-plus cartridges, allowing the use of drills with a diameter of up to 26 millimeters. Heavy hammer drills are equipped with SDS-max cartridges - operating drills with a diameter of up to 60 millimeters is not a problem with them. In various model ranges of medium-sized rotary hammers, you can “meet” both those and other cartridges.

Interesting! Relatively recently, SDS-top cartridges began to be used (for 16-25 mm drills). They are not yet widely used - such cartridges are mainly equipped with units from Bosch.

Like most other construction power tools, a rotary hammer can carry out its work, “powered” not only from the mains, but also from a battery. It is worth noting that cordless tools are much more expensive than classic ones, and the need for such “mobility” arises extremely rarely.

Electronic speed control is by no means an unnecessary item in equipping a rotary hammer. The presence of an appropriate “auxiliary device” will allow you to select optimal speed rotation - depending on the size of the drill, the current load on the hammer drill, etc. Thanks to electronic adjustment, the service life of the unit increases and the quality of work improves. In principle, many models can boast of this function.

Heavy hammer drills (in most cases) are professional tools. For home needs, the average model will be enough.

Additional features of units

Rotary hammers, in addition to the standard set of functions, may have additional gadgets that significantly expand the capabilities of the tool and make the user’s work easier. For example, the presence of a reverse mode in a hammer drill will allow you to use the unit as a screwdriver. In addition, this mode can help “free” a jammed working tool.

The “soft start” option will allow you to avoid chaotic vibrations of the device immediately after turning it on. The present switch stopper will save you from having to constantly press the corresponding button during operation. The safety clutch will protect the engine from damage and overheating.

Expensive models boast an anti-vibration system, as well as fully insulated all-metal housings, two-speed gearboxes, and lower noise levels.

Cost of rotary hammers

The price of units directly depends on their power, the range of implemented functions, the quality and cost of all components. Also, the cost of each specific hammer drill will be affected by the delivery package. The most budget unit will cost you 80-100 US dollars, a middle-class model will cost about 250-350 USD. A professional three-mode hammer drill costs neither more nor less - $1000.

Which hammer drill to choose for home and which for work?

For home use, you definitely won’t need an overly heavy and mega-powerful unit - you can turn your attention to mid-class models from Makita.

But professionals should think about a high-performance machine with a sufficient number of bells and whistles. A good option a properly selected model from Bosch could be the answer.

In both cases, it would be very nice if the delivery package included a set of drills.

You can argue endlessly about which hammer drill is better. Remember: a worthwhile hammer drill does not have to be the coolest or obscenely expensive. If the unit copes with the task assigned to it one hundred percent, then in your particular case it will be the best!

A hammer drill is an indispensable tool during home renovation or construction. With its help, it is very easy to make various holes in concrete, brick or stone surfaces. In order to choose the right tool for certain types of work, you first need to know what types of hammer drills the industry offers.

Although the purpose of these units is the same (drilling, drilling, chiselling), they differ in their functionality, which affects their scope of application.

Cordless rotary hammers

Devices powered by battery(battery) can be classified as household power tools.

A cordless hammer drill is convenient to use in places where there is no electricity, but you should know that the tool is designed for a short operating time. With its help you can only make a few holes in the wall. It is not suitable for work on hard materials that require prolonged operation of the device.

The main advantages of the battery-powered device:

• independence from the electrical network - can be used in the country house, in the garage, for roofing work, etc.;
• sufficient power;
• light weight;
• compact body;
• presence of reverse;
• you can drill concrete (maximum diameter 10 mm);
• has a speed regulator.

Disadvantages of a battery-powered device:

• The operating time of the device is limited by the battery capacity;
• inconvenient for frequent use, since it takes time to charge the battery;
• if dropped, the battery is damaged;
• Difficulties arise when purchasing a spare battery.

Network devices

This type of device is most in demand, both for home work and for professional use in the construction industry.

Thanks to constant power supply from electrical network, the units have good performance and have great power. Network hammer drills are widely used in construction and repair work, make it easy to tap and drill walls, as well as make openings in them.

Advantages:

• high performance;
• affordable price;
• most devices have three operating modes (drilling, drilling + impact, impact without rotating the chuck);
• anti-vibration system;
• possibility of speed adjustment.

Flaws:

• the power cord restricts movement;
• when the network voltage is unstable, performance decreases;
• During long-term and frequent work, the clamping chuck wears out, as a result of which the fixation of the drill weakens, and the chuck needs to be replaced.

Pneumatic hammer drills

Pneumatic tools working from compressed air. For this reason, it can only work in tandem with a compressor.

This type of tool is used in places where power tools cannot be used due to explosion hazard.

Pneumatic units are often used when working in damp areas, for example, flooded with water.

Advantages:

• light weight;
• high spindle speeds and high beats per minute;
• can be used in damp rooms and places with increased risk of explosion.

Flaws:

• a compressor is required for operation;
• the length of the hose limits movement;
• high cost of the unit.

Gasoline devices

Units driven by a two-stroke gasoline engine have high power and high impact force.

Advantages:

• mobility due to independence from the compressor and the electrical network;
• one tank refill allows the unit to operate for about 2 hours;
• swipe;
• three operating modes.

Flaws:

• high price;
• heavy weight;
• the impact force is not adjustable, which can cause unnecessary cracks in the treated surfaces;
• the need for a canister with additional fuel;
• material costs for the purchase of fuel;
• large dimensions.

Classification by engine location

In addition to the power source, devices can differ in the location of the engine: they are pistol-type and barrel-type.

Pistol type device

In these hammer drills, the engine is located horizontally, and the impact mechanism (located in the barrel of the unit) is driven by “drunk” bearing, to which rotational motion is transmitted from the rotor.

If you look at the barrel perforator, you will notice that the engine is installed in it at the bottom of the unit. The vertical electric drive makes it possible to most effectively use the crank mechanism (CCM) to put the impact block into operation.

The rotational movements of the engine rotor are transmitted to the crank, which, converting them into reciprocating movements, transmits them to the piston. The latter activates the impact mechanism located in the barrel of the device.

Important characteristics of rotary hammers

In order not to overpay money for unnecessary power, or, conversely, not to get the required result due to the low power of the device, it is necessary to study the main characteristics of the devices and what they affect.

Impact force

This parameter indicates the force with which the equipment (drill or pick) will be immersed in the material being processed. Impact force is measured in joules (J). The value of this indicator depends on speed of work. In the professional field, you have to drill many holes and make large openings in a day. Therefore, it is necessary that the device has an impact force of 4 to 17 J. For a home, a hammer drill with an impact force of 1-3 J will be sufficient.

Power

The force of the impact directly depends on the engine power of the unit. Rotary hammers are usually divided into 3 classes based on power.

1. Lightweight devices have low power, on average up to 0.8 kW. They weigh about 4 kg and can develop an impact force of up to 3 J.
2. Medium hammer drills have a power of 0.8 to 0.9 kW, weigh up to 8 kg, and develop an impact force of up to 9 J.
3. Heavy units– these are devices with a power of 1.2 kW and above. They have a weight of more than 8 kg, and an impact energy of more than 17 J.

Beat frequency

The performance of the tool also depends on the frequency of impacts. Even when the impact force of the unit is high, with a low frequency of impacts, the work of such a tool will proceed slowly. Therefore, this indicator is very important for the professional use of a hammer drill, and should be about 5000 blows per minute. At the same time, a home appliance can have 3-4 thousand beats per minute.

Rotational speed

This figure is significantly higher for household hammer drills. This is explained by the fact that at home the device will be more often used as a drill. Therefore, rotation speeds in the range of 1500-2300 rpm are available for household devices. For professional equipment, the spindle speed is in the range of 750-1100 rpm, since priority is given to the impact functions of the devices.

Operating modes

Most units have 3 operating modes.

1. Hit. In this mode, the equipment performs only translational movements, as when operating a jackhammer. There is no circular motion of the spindle.
2. Drilling. The spindle of the device rotates. This mode allows you to use the unit as a drill, as well as for drilling with diamond bits.
3. Drilling + impact. This mode combines 2 functions. It is typically used for drilling holes in hard materials using special drill bits.

You should know that there are models of rotary hammers that have only 1 or 2 modes. Therefore, we choose a device with three modes: with its help you can solve more problems.

Chuck type and drill diameter

In rotary hammers it is common to use SDS cartridges. The abbreviation SDS is translated from German as “insert, turn, secure.” Clamping chucks are divided into 5 types:

Additional options

The characteristics that have been described above are key. And in order to choose the right hammer drill, you need to pay attention to them. But there are also additional options that should be taken into account when purchasing a device, as they can significantly improve the usability.

1. Availability of reverse. This option is not required, but recommended. With its help, it is easier to pull the drill out of deep holes. To do this, just turn on the reverse rotation of the spindle of the device.
2. Jam protection. This function is very important if you have chosen a high-power unit. If the equipment gets jammed in the material being processed, a special coupling can prevent injury to the worker and burnout of the motor windings.
3. Speed ​​shifter. With its help, it is possible to regulate not only the spindle rotation speed, but also the impact frequency.
4. Smooth start avoids tool jerking when starting.
5. Speed ​​stabilization system. This function maintains the spindle speed at the same level, regardless of the load on the tool.
6. Stop button for switch allows you to lock the start button in the working position, and further holding it with your finger is not required.
7. Anti-vibration system important for professional tool. Thanks to it, the master will feel significantly less vibration, which, as is known, affects not only muscle fatigue, but also human health in general.
8. Emphasis allowing you to control the drilling depth.
9. Availability of dust collector. A hammer drill with a dust collector allows the master to more comfortably perform the work of drilling walls, since this operation generates a lot of dust. The nozzles have a pipe for connecting a vacuum cleaner to them, and can have different designs.

The best manufacturing companies

The number of rotary hammer manufacturers is steadily increasing every year. But self-respecting professional craftsmen give preference to a tool that has been tested in practice for years and has good feedback from the owners. The review presented below includes the most popular device manufacturers of 2016-2017.

First of all, if you are confused about which hammer drill is better to buy, decide for what use you want to purchase the tool: for household or professional use. Usually, household tool does not withstand heavy loads and is designed for short-term operation, no more than 25 minutes. After this, the engine must be given a rest to cool for about 30 minutes. In addition, household devices should not operate for more than 4 hours (in total) per day. At the same time, a very powerful tool is not needed for home use.

Professional construction hammer drill can be used to perform large volumes of work, including as a jackhammer, since the unit is able to withstand heavy and long-term loads. You can distinguish a professional hammer drill from a household one by several criteria:

• price - household power tools are much cheaper than professional ones;
• The pro-class device is distinguished by great power and considerable weight;
• professional units have increased impact force, which increases their productivity.

Hammer for home

Tools for home use are devices of light and medium level, in terms of weight and power. If you occasionally need to use this tool for concrete or chiselling brickwork, then it is recommended to purchase a pistol-type device that has the following parameters and design features:

• engine power should be in the range from 0.6 to 0.9 kW;
• impact force – from 1.2 to 3 J;
• the device must have 3 operating modes;
• impact speed can reach 5000 beats/min;
• spindle speed must be adjusted;
• spindle rotation speed must be 1100 rpm and higher;
• the presence of a coupling that prevents jamming is welcome;
• the device must have a quick-release chuck and be sold with a replaceable chuck;
• It is necessary to have a button to lock the trigger;
• comfortable handle that can be easily rotated to any position;
• the presence of reverse (the ability to turn on the reverse rotation of the spindle).

Hammer for work

A professional hammer drill, both with a horizontal and a vertical motor, must be able to work within the ranges listed below (these are general parameters within which pro-class tools operate):

• the impact speed should be from 1000 to 5000 beats/min;
• spindle rotation speed from 750 to 1100 rpm;
• impact force from 8 to 17.5 J;
• power consumption from 1250 to 1500 W;
• weight from 6.9 to 10 kg;
• maximum drilling diameter in concrete from 45 to 80 mm;

Also, a device for professional use must be equipped with anti-vibration protection and anti-jamming protection.

A hammer drill is a very the right tool, used for drilling various holes. In its principle, the tool is similar to an impact drill, but these devices are not interchangeable. In this article we will deal with the problem - how to choose a suitable hammer drill for home work, which device to choose for apartment renovation, and also consider all its defining characteristics.

General information

A hammer drill is a device that allows you to drill holes of various sizes and depths in various materials. The intended purpose of the device is drilling materials that have high strength and rigidity (for example, concrete). Today, the most common types of these devices are devices with pneumatic and electric mechanisms, which provide impact drilling of material. Many consumers are concerned about the question: “How to choose a hammer drill for the home?” Uncertainty comes at the sight of a large assortment of proposed models. After all, each of them differs in performance, as well as in different technical features. Therefore, to make a choice good hammer drill, there are a number of factors to consider.

Impact drill or hammer drill?

These two devices that need to be repaired have fairly similar parameters, but at the same time they are different.

• A drill is a smaller and less weighty device, usually used for drilling not very durable materials. Its hammer function provides very little assistance when drilling.
• The hammer drill, in turn, has greater drilling and impact power, while also having the function of a hammerless drill. When purchasing a device, you can save money that you would have invested when purchasing both devices. Powerful drills used in the devices will allow you to quickly and easily make the necessary holes in shape and depth.

How to choose the right power

The power of the device is one of the basic parameters. There is a fairly wide range of device powers on the market: from 450-500 W to 2000-2500 W. As a rule, models with a power of 450-600 W are suitable for the home. All models with higher power can be called professional. Such devices allow faster and deeper drilling. For infrequent drilling work, a low-power model can be used.

Deciding on the type of device

The choice of a good hammer drill is influenced by its engine layout.

There are two such types:

1. Model with a horizontal engine, suitable for short and narrow drillings. In such varieties, the engine is located along the shock axis, which contributes to low level cooling it. During long-term operation, this type of engine must be allowed to cool, otherwise it may fail.
2. Vertical engine model. In such devices, the engine is located, accordingly, perpendicular to the impact axis. These devices have the advantages of higher power and no need for constant cooling. Therefore, such varieties are more often used in conditions where uninterrupted operation and high impact power are required.

About the force of impact

Impact power is one of the determining parameters when choosing a reliable device. However, greater power provides greater tool productivity, and therefore greater energy consumption. The greater the working power, the deeper and larger in diameter it will be possible to drill. At the same time, we should not forget that such high-power devices will have large dimensions and large mass.

How to choose a hammer drill for concrete

When choosing the required model, you should pay attention to its markings. Concrete requires the marking – SDS+. With this device you can not only pierce concrete, but also stir the solution and tighten bolts. Also, in the technical specifications, you should pay attention to the maximum permissible drill size. For various materials, be it brick or concrete, there are drills suitable for one or another material. Plus to all this is the high power of the device itself.

Preferred Power Source

There are two basic types of power sources: battery-powered and mains-powered. When working at height, it is not always possible to connect to the mains. Therefore, in such conditions it is most effective to use models that run on a battery. The battery itself must have a high capacity, since shock power will require a lot of energy consumption. The main feature of these types of rotary hammers is the price indicator. Battery-powered devices are much more expensive than mains-powered devices.

How to choose a Bosch rotary hammer

Today, many companies selling equipment for repair recommend choosing a good hammer drill in favor of the German giant of power tools - Bosch. It has been on the lips of every person for a long time. The main feature of this brand is a reliable and high-quality product. In order to give advice on choosing a reliable Bosch rotary hammer, you need to understand their markings. You can find the following designations: PBH or GBH.

• G – device for professional use. R – device, used for domestic use.
• The numbers indicate the weight of the tool. (example: 3-40, 2-32).
• Capital letters: d – suitable for chiselling, f – with replaceable chuck, r – has reverse.

When purchasing a company's products, carefully read all technical characteristics tools so as not to overpay for unnecessary equipment.

A little about additional characteristics and weight

The lighter the device, the simpler and easier it is to work with. Many existing household models are light in weight (3.5-4 kg). Among other additional devices, it is worth highlighting: the ability to smoothly unwind the drill, adjust the rotation speed, and protect against jamming of the drill.

About choosing a drill

Why is idle speed so important?

The main purpose of the drill is to work with concrete. The difference between a drill and a drill lies in the characteristic tip, manufactured according to the SDS standard. Drills with special attachments (crowns) are suitable for various purposes. On each drill, its dimensional characteristics are indicated, and on the installation structures, it is indicated which drill (in diameter and length) should be used to drill the required holes.

A tip for choosing a reliable hammer drill is to choose a kit that includes: the device itself, a drill and a case for convenient transportation and storage of the tool. It is recommended to give preference to well-known companies that have proven themselves with best side, and their products are of excellent quality.

Rating of the best hammer drills

The best professional rotary hammers

We have collected almost all models of professional rotary hammers available on the market with a horizontal motor and an SDS+ chuck and identified the best among them based on their characteristics

• Makita HR5001C
• Makita HR5201C
• Makita HR4501C
• Makita HR5211C
• DeWALT D 25601 K
• Bison ZPME-1250EK
• Makita HR5210C
• Hitachi DH45MR
• DeWALT D 25762 K

The best hammer drills for 5000-6000 rubles