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Best Hammer Drill 2019 • 0 Hammer Drills Reviews

What is a hammer drill?

The definition of the hammer drill refers primarily to the combination of the two operations of drilling and hammering. With this functionality it is easier to drill holes, even if the material is solid. Mineral building materials such as concrete and brick can hardly be drilled through with a simple drill. However, the hammer drills from the test do not only work with the rotary movement of the drill. In addition, there is the What is a hammer drill test and comparison?Percussion motion, which creates at least 4000 strokes per minute depending on the performance. This will wear down the building material. At the same time, the rotation ensures that the cutting edge of the drill attachment penetrates into the material and also transports the resulting small particles or dust to the surface.

In general, the hammer drill can be operated manually without the need for mechanical tools. There are two main forms of these tools, if one orients oneself to the driving energy: the pneumatic and the hydraulic hammer drills.

With their stability and the targeted function the hammer drills are suitable for drilling holes in hard stone walls or concrete walls. With this capability, they are not only used for building houses, but also, for example, for mounting suspensions to the ceiling or for attaching curtain rods. Even extremely hard rock can be drilled with the aid of a hammer drill Test winner, if the percussion mechanism provides the appropriate performance.

Many hammer drills from the test can also be switched from standard drilling to the chisel function. For chiselling there is a suitable attachment which helps the craftsman to work on the wall.

The shank of the hammer drills has a different shape than that of another drill, for example a percussion drill. Basically, the hammer drills from our test SDS attachments are used.

A glance at the impact force shows how strong the hammer drill is and for which rock types it can be used. The higher the Joule specification, the harder the material can be. The maximum power in watts also provides information about the power of the tool.

For softer Building materials like plastic, lightweight walls, metal and wood the hammer drills we tested are not suitable.

How does a hammer drill work?

The extremely robust tools are equipped with a drill which also moves in the axial direction. This means that, in addition to the turning function, an impact force acts on the drill. The percussion mechanism is responsible for the energy with which the strokes are executed. With the drill hammers in the test we have determined that this component can be a spring striking mechanism or a pneumatic striking mechanism.

Obviously, most manufacturers now tend towards the pneumatic functionality of the striking mechanisms. Both percussion mechanisms are the basic prerequisite for the impact force of the tool, because without them the hammer drills would be a type drill without impact force. Many do-it-yourself enthusiasts use modern hammer drills with pneumatic percussion under the name of pneumatic hammer drills. However, this term is not quite correct, because a real pneumatic hammer drill is a device that is much larger on the one hand and works with pure compressed air on the other.

The modern percussion drill with pneumatic percussion mechanism is now considered a reliable standard. So it's worth taking a look at the exact way it works.

The striking mechanism consists of the eccentric wheel, a piston and the firing pin. The eccentric wheel is the bearing for the drive. It converts the rotational movement triggered by the motor into the lifting movement: The piston creates a vacuum as it moves backwards, causing the club to retract. During the forward movement there is an overpressure, which triggers a acceleration of the club. The firing pin absorbs the kinetic energy. This can result in impulse transmission of the force to the hammer shaft or to the bit. Most hammer drills have a safety coupling to prevent users from experiencing handling difficulties. This serves as protection against blocking and at the same time should prevent the mechanics from being damaged.

A comparison of the hammer drill with the impact drill shows the following:

In the impact drill, the drill and chuck are combined in such a way that the axial movement is also driven by the chuck. The hammer drill would not function optimally with this design, because a simultaneous axial and rotational movement is required here. The tension created in the chuck could cause the drill to come loose due to the vibrations it generates. Furthermore, due to How does a hammer drill work in the test and comparison at ReviewInstitutes?the increased feed mass, a larger portion of the kinetic energy would be lost.

Since the 1970s there has been a SDS quick clamping system for the hammer drills. This offers the drill a certain amount of play in the axis of rotation, depending on its size. Due to this design, the holes are drilled a little faster. Especially the professional tools for house building show an enormous strength. However, they are only suitable for experienced craftsmen and only pay off if you frequently work with a hammer drill.

The SDS system is a specific type of drill shank. These systems were specially developed for the powerful hammer drills. The quick clamping systems facilitate handling, because here the drill simply has to be inserted and is immediately ready for use. The cumbersome handling of a key for the drill chuck can therefore be dispensed with here. The grooves in the drill shank also ensure optimum energy transfer. There are, by the way, several explanations for the abbreviation SDS. Bosch has three proposals at the ready. In the beginning it meant plug-and-turn seat, later it was explained with the words Tensioning by system and today we often talk about Special Direct System.

The patents for the original SDS-Plus system have now expired, so that many other manufacturers are also using the invention patented by Bosch. There have been no further developments since then, but the shaft diameters can vary depending on the design of the hammer drills. For the different shank diameters you need the appropriate drills; it is therefore not possible to exchange the system parts with each other.

Advantages & Application areas

In the test of the hammer drills we checked many of these modern tools carefully and examined the respective advantages and areas of application under the magnifying glass. Typically, the hammer drills are combination models that support several tasks. This is due to the combination of rotation and percussive motion. A hammer drill can therefore be used to carry out various tasks:

  • Percussion drilling,
  • chisels,
  • Hammer drilling,
  • Chamber.

For chiselling and chiselling you have to set a Stop Spin to deactivate the rotation. This means that here only the percussion mechanism is used for the work.

The different models of drill hammers can be selected to suit the respective requirements. In general, one appliance with 500 or 600 watts of power is sufficient for domestic use. With this you should be able to do small do-it-yourself work in your own home. If necessary, a 700 Watt hammer drillAdvantages from a hammer drill test at ReviewInstitute is the right solution if the environmental conditions require a little more power.

You can find out more about the suitability or usability of the hammer drills from our test by reading the product instructions. The high impact strength indicates that even hard materials such as concrete, stone and granite can be processed with the drill hammer test winners. In addition to the device itself, it is also a matter of inserting the appropriate drilling attachment. A simple drill could show early signs of wear due to excessive stress and would have to be replaced soon. Therefore it is worthwhile to use special drills for concrete or stone. These are equipped with a hardened metal tip so that they can drill the holes perfectly without yielding.

In frequent use, the hammer drill test winners prove what they can do. Depending on their power they convince by several advantages:

The high performance ensures rapid progress in drilling and is also the basis for reliable removal performance during chiselling.

The Right and left rotation helps to loosen the drill and ensures a constant force.

There are many uses in do-it-yourself, with the locking knob supporting continuous work and preventing fatigue.

The robust quality components ensure reliable stability.

A stepless speed control facilitates clean drilling.

A ball grommet helps against cable breakage.

The overload clutch provides good protection for both the user and the device.

For the stable attachment of hooks or for other construction work, it is therefore worth taking the hammer drill out of its case. Although it is heavier than a normal drill, it also penetrates masonry and can be handled safely. The advantages are not only shown in the clout, but also in its robustness. Even after many years the tool can still be used. The only parts that need to be replaced frequently are the drill bits. Make sure that they are the right size for the drill chuck.

What do I have to pay attention to when buying a hammer drill?

Buying a reliable hammer requires a lot of attention. In our test, we tested various models and found that it is not always the power and speed that counts when working. The handiness also plays a certain role, especially if you use the device frequently. Many aspects should therefore be considered in the context of the selection criteria.

Basically, most do-it-yourselfers tend to use electric hammer drills. Meanwhile, the What to look out for when buying a hammer drill manufacturers but also more powerful battery hammer drills. These allow working without cables and offer correspondingly more flexibility and safety. When selecting an electrical device, you should also make sure that it is not too heavy. A compact design and a weight that is not too high make even slightly longer work a breeze.

From this point of view, working comfort is an essential advantage. If you don't just need the hammer drill in wall walls, but also chiselling and chiselling work, a powerful electric hammer drill is better than the less powerful battery-powered model. Here, the percussion mechanism is in the foreground.

For simple hammer drilling an impact force of approx. 0.6 Joule is sufficient, whereas for more difficult work a force of at least 1.5 Joule, but better 2 Joule, should be available.

The format, weight and power of the appropriate hammer drill depend on how often you need it and what you want to do with it. Professional craftsmen do not necessarily need the best hammer drill test winner, depending on their main field of work, which has a high functionality and impact.

Electricians like to choose a lightweight hammer drill because they can also use it for work on the ceiling. If you have to drill overhead, the small-format device does not weigh too much and still makes perfect dowel holes in the concrete ceiling. Electricians often like to use a hammer, which is operated with a rechargeable battery and weighs approx. 2 kg. On the one hand, it offers great flexibility and, on the other hand, it is very practical. If light chiselling work is also to be carried out and dowel holes with a larger diameter are required, the battery hammer, which should weigh no more than 4 kg, can also be used.

Construction workers such as bricklayers and plumbers rely on an even higher weight class. In addition to the higher performance of the hammer drills, functionality plays a role here. During construction and renovation work, these devices support fast work.

Various types of hammer drills

A tool used for drilling holes in hard materials with a mineral structure, such as concrete or stone, is the hammer drill. Nowadays this is mostly electrical in nature, as various external hammer drill tests show.Bohrhammer von Bosch ist betriebsbereit

It is to be distinguished from a percussion drill by its operation and the fact that is not claimed the force of the user. At first glance, the tool seems like a pistol due to its unconventional construction.

But the pistols are confusing, because they are available in several versions and types, manufacturers and types. A distinction is made between pneumatic, hydraulic and electric hammer drills. In addition, there is a differentiation between well-tried brands and new high-flyers, between cheap and expensive equipment, etc.

To simplify this, a direct comparison is necessary, a hammer drill test to put them through their paces, or in this case, on motor and firing pin.

The differences between the types of hammer drills

three types of hammer drills are known. There are pneumatic, hydraulic and electric hammer drills.

  • Pneumatic hammer drills depend on and are operated by compressed air. These are mostly used for mining and their weight is about 40-50 kg.
  • The hydraulic hammer drills are similar to you because they work on almost the same principle. The weight class of these hammers is 150 kg and more.
  • The electric hammer drills are an invention from Bosch and a useful, handy tool for your own four walls. They can cope wonderfully without compressed air, but have a lower performance than pneumatic devices.

In contrast to the impact drill, the number of impacts here is low, but the impact energy is high.

The history of the development of the hammer drill

Already in the late 19th century, after several attempts, experiments and test runs, the first drill hammers operated by air pressure found their use. They were pneumatic hammer drills developed in the 1860s. The application area was tunnel construction, after which they also tried their luck in the field of mining.Bohrhammer von Bosch mit den Einstellungsmöglichkeiten

For the first pneumatic hammer drills, the largest manufacturer was Flottmannwerke from Herne. After them came in the year 1973 the hydraulic hammer drills, from the company Atlas Copco.

But already since the year 1932 there is the first electronically operated hammer drill.

The Bosch Hammer

They went into series production with Bosch and the hammer drill was given a new name. He was given a synonym as Boschhammer because they were the first to launch the product.

Just like a Tempo handkerchief, the Bosch hammer is, according to studies, almost regarded as a independent product in colloquial language.

The Bosch hammer was equipped with a twist-thrust sound unit, which made drilling and chiselling possible. Even then, this first prototype generation was equipped with a safety clutch. This interrupts the torque if an emergency occurs and, as would be expected, is also an invention of Bosch.

How a hammer drill works

Drill head from Bosch hammer drill in detailWhen Mathematicians and their investigations after many test runs and controls in a machine are realized, then we are talking about a hammer drill. It was written in 1857 when Franz Neumann gave his calculations a technical application.

The tool, which until recently was only known as a drilling tool, got a short, free-flying cylinder or hammer. This was connected to the rotating amnvil or shaft. The energy required for drilling is generated by the percussion mechanism.

Two types of percussion instruments are distinguished:

  • Spring impact mechanisms and pneumatic impact mechanisms are the most frequently used types.
  • A pneumatic striking mechanism consists of several parts, an eccentric wheel, beater, piston and firing pin. Drill head from Bosch hammer drill with cleaning set

The eccentric wheel converts the effect of the electric motor into a stroke movement. This results in a backward movement of the piston and a negative pressure. The club is pulled back like this. At the same time, a overpressure between the piston and the compression occurred at the other end.

The beater moves forward accelerates and hits the firing pin, which emits kinetic energy. This impulse is then transferred to the tool shank. The firing pin protects the machine with its sealing ring also against dirt and dust .

Most of the power of the hammer passes into the high frequency vibration of the drill. These are more than 10000 Hertz, which act on walls or concrete with a strong penetrating power. There must be no confusion between hammer drill and percussion drill.

Comparison to impact drill

In the percussion drill, the percussion mechanism is kinematically coupled to the drill. This is why a hammer drill produces significantly fewer impacts per minute than a percussive drill. There are 5,000 blows per minute acting on the material.

These are clearly stronger than with a impact drill, since a chuck is present, which absorbs the kinetic energy of the impact so to speak. The chuck of the percussion drill follows the axial movement, so that this concept is not suitable for a hammer drill that performs the axial movement and the rotary movement simultaneously two movements. It would be quickly affected by the hammer drill, or its force would be lost in the mass.

What is behind the name SDS systems?

The SDS systems are used to mark the drill shank of power tools such as drills and hammer drills. These are special grooves that allow fast change of the drill shank on drills and chisels.

The abbreviation SDS has several meanings. Originally it meant “Push-turn-seat“, but Bosch changed the meaning to “Tension through system” due to its further development. For international use, SDS also means “Special Direct System“.

These are the grooves of the individual drills or chisels, which are distinguished by this marking. There are three different SDS systems , which are suitable for different hammer drill weight classes depending on their length.

SDS-Max and Plus

As the name suggests, the SDS-Max system has been developed for heavy hammer drills. This category includes not the 2-kg lightweights for the frugal do-it-yourselfer, but real buzzers of four kg and more.

The percentage is 60% for this combination of weight of the hammer and Max system, which means that exceptions to this rule occur from time to time. Tools suitable for the Max system have a shank diameter of 18 mm.

The SDS-Plus system is used for tools with a 10 mm diameter and is designed for weight classes below 4 kg. These are 90% of the hammer drills and, in contrast to the max fraction, they only use 2 grooves each for tool locking and rotation e.

In addition to these systems developed by Bosch, the SDS-Quick is also available. However, this can only be used for two Bosch battery-powered drill hammers, namely for Bosch-Uneo and Bosch-Uneo Max. For which a small shaft diameter of 6.5 mm is characteristic.

Internet vs. specialized trade: Where to buy my hammer drill?

There are different addresses where hammer drills are offered. Often the do-it-yourselfers first look around in their DIY store. In addition, you can get an impression of the assortment in the tool shops. However, the largest assortment can be found on the Internet. Here, in addition to online dealers, there are also comparison portals where buyers encounter an enormously wide range of hammer drills.

It is possible to have the device demonstrated in a DIY store as well as in another shop. If you have any questions, you can immediately get help from the sellers. With a little luck there are some products in the DIY market even particularly inexpensive, because some suppliers like Globus offer own brands. In comparison to the quality marks these hammer drills may not perform quite as well, but for domestic use such a device may be sufficient.

The main reason why most prospective buyers buy on the Internet is the wide selection. Both the older models and the innovative hammer drills of the major brands are available here. In addition to this bandwidth, the convenience of ordering online is also convincing. A few mouse clicks are often enough to look at the devices in question. In the shops, filter functions and sorting help to restrict the products in a targeted way. Last but not least, the customer evaluations are also useful because they show how satisfied the other buyers are with the respective hammer drills.

The Stöbern and the order itself can be accomplished independently of the office hours on-line . So you don't have to go to a specialist store or to a DIY store, where it is often difficult to find a competent salesperson. If questions remain unanswered despite the detailed description on the Internet, there is often a service team that you can call or email. The selection is easy with the information available here.

For the price-conscious buyer, a comparison is worthwhile: Where does the selected hammer drill cost the least? Here one should not overlook the possibly resulting delivery costs. When buying online, you often have to wait a few days, but many shops offer an express service if you are in a hurry. Then the hammer drill will be delivered the following day.

In case of a complaint or an exchange , this should not be a problem in the shop or DIY store as well as when ordering online. However, you have to go there again when you buy in the shop, while the return shipment is sufficient for Internet orders.

Convenient, uncomplicated, flexible and reasonably priced, with these three advantages the online order is clearly ahead compared to the purchase in the specialized trade.

How was it tested and compared in various tests?


The scope of delivery and an attractive appearance are of course a test criterion. But what was more important in the hammer drill tests was the handling and performance. Many drills offer, in comparison, either one or the other. The best processing of the hammer drill is important for good handling. A soft grip with rubber was a must in every test, not only to lie comfortably in the hand, but also to absorb the vibrations well.


If it is a battery-powered hammer drill, the charge time must not be too long. Also the working time should not be too short. This test criterion naturally depends on the application of the hammer drill.

A good hammer drill is characterized by 3 Ah battery capacity. But even some that are close below have convinced in many comparisons and tests.

Cable length

However, if we are talking about a mains operated hammer drill, the cable must have at least a length of 2m and must not be sensitive. The best performance of the hammer drills in the tests was tested by direct success or failure.


Construction work, such as knocking off tiles in the bathroom, or small jobs, such as drilling dowel holes in the living room, were only part of the hammer drill test for the hammer drills.

Tests show that features such as impact force are not as important as precision, torque or durability.

In addition to these, other test criteria were also important in the tests, such as a

  • rich accessories
  • one strong motor
  • good workmanship
  • a long warranty and
  • reliable safety precautions.

Often the customer gets lost in a good price-performance ratio. That is also correct, if the thought is directed after the principle, for little money, little achievement.

Simply test and compare the models yourself in product tests, practical tests, comparisons, juxtapositions and studies on the Internet! After inspection, best consideration and control you will find your winner in congruence to your wishes!  A comparison table can support you in this.

It's not all gold that glitters?

When buying hammer drills, the trend usually goes to a well-known manufacturer, as analyses show. Brands like Bosch, Hilti, Makita, Metabo and Co. are very far ahead in sales figures. But there are also “No name”-products, which really take off and their attractive presentation and a favourable price irritate every small do-it-yourselfer from time to time.

However, most hammer drills are supplied in appealing and sturdy packaging, like an aluminum or hard plastic case with lining. “No name” products are easy to recognize after a short inspection. They do not come with generous accessories and appear rather in a futuristic packaging.

However, the price-performance ratio is good, not much can be expected for little money. The disappointment about a cheap packaging is therefore kept within bounds.

Looks & Design

When talking about the appearance and design of the best equipment in the test, it must be emphasized that the hammer drills look like one egg to another. The look, which is similar to a pistol and which turned out to be the most practical and best design in all the years, probably won't and won't disappear from the picture.

From time to time, however, some manufacturers venture experiments such as Metabo with their Porsche version. A hammer of the very special kind, which is characterized by a reversed grip . The P'7911 from Porsche and Metabo represents a revolutionary solution.

In addition to the handle, which is directed upwards rather than downwards, Metabo also came up with a new housing. The shell is made of carbon fibre reinforced plastic with an aluminium shackle.

Design vs. performance in hammer drill Test

This design makes the hammer drill test winner easier in the eye of the beholder, but it only seems so. The design has no influence on the best performance or handling of the device. Of course, the design takes getting used to, but for the first attempt at a revolutionary step, it's solid.

Drill hammers of known brands now differ only by color and not by grip position. A uniform green, blue, black, yellow or red is included, so that unusual tastes will surely miss a floral pattern.

What does the hammer drill have to do?

It is the features that make a hammer drill test winner to what it should be. A performance of at least 4000 hits per minute is the average of a strong and reliable hammer drill. Some also have 5000 and more.

In addition to the number of strokes, a small weight is an advantage. It seems illogical, but the overhead will thank you for it. The 2 kg class is the most widely represented on the market, although this also represents an individual feature for each product.

Just like an ergonomic and practically shaped soft rubber grip , whose task is to dampen vibrations and of course to make handling as pleasant as possible. Versatility in application is also a must, so that in addition to drilling dowel holes, light chiselling work is the order of the day.

A dual function of the best equipment as a hammer drill and drill as well as several speed steps, are desirable. The battery remains. It is of great importance because the duration of the work depends on it.

An additional feature that is greatly appreciated is the Switch off the hammermill. Thus, the drill hammer test winner can also be used as a normal drilling machine. But a turning stop function for light chiselling should also be available.

The user of a hammer drill should know the associated noise level. In the past, this level was 125 dB, whereas today most people have to come to terms with 108 dB. So a hammer drill cannot become much quieter, so that this criterion is mostly superfluous in a test.

Safety first

When we talk about safety, we mean not only use, but also purchase. The device and its accessories must therefore have certain security features. But they should always also have a guarantee as security for the customer. This was an important test criterion.

  • In accessories, the battery chargers are perhaps the most dangerous, so they must at least have a overheat protection, short-circuit protection, automated charger cut-off and the detection of defective batteries.
  • The safety features of the best equipment itself include, especially when talking about pneumatic hammer drills, technical details such as thermal motor overload protection, compressed air tank with safety valve, as well as pressure gauge and condensate drain valve.
  • Beside these, a guarantee of 2 years is the minimum. Special attention must be paid to this so that no two payments are made. For the small purse this is however mostly a luxury, since cheap devices do not allow themselves the fun. If, however, a guarantee can be found with the cheap hammer drill, then it is only a matter of buying!

Operation & handling in external hammer drill Practical test

What is a must when it comes to operating and handling the hammer drills is a low effort. A good hammer drill should take about 5-8 seconds to drill a 12 mm diameter hole.

In addition to this speed, he must also be able to carve, whereby the necessary turn stop function must not be dispensed with. When drilling through metal, a hole 6 mm in diameter should not take a minute to fall into the shadow of fast percussion drills.

It goes without saying that the hammer drills do not achieve the best results with metal or wood, because higher expectations are placed on them. They are optimized for drilling ceilings or walls , so that a fault due to plastic or metal is easily distorted.

Handling of a hammer drill

Drill hammers are suitable for coarse and hammer their drill through walls. It is short shocks with compressed air that propel the drill, which prove to be indispensable for drilling through granite and concrete.

In contrast to percussion drills, the do-it-yourselfer only has to guide the tool and not drill a hole with his own power. No matter what kind of work on mineral materials is involved, the hammer drill is a tool for rough work.

However, there are now smaller electrical devices for light work , which also have a certain precision, so that a clean hole can form if it is required. Fraying of the material and the like should already be history and hammer drills, which allowed themselves this, dropped out in the hammer drill test.

The little things make the difference

A northern accessory with the delivery of a hammer drill is always desired. However, this is mostly offered by the more expensive devices, although some also want to convince cheap with a lot of bells and whistles.

  • The standardized picture at the time of purchase naturally includes the case, which usually contains the hammer drill and many drilling dowels.
  • The number and quality of Drill dowels says a lot about the device. It is of course pleasing to see the device pay off only through its accessories. The supplied dowels often cost more than the device itself with low-cost devices.
  • In addition to the various drills, the accessories also include various types of chisel.
  • but the quality must not fall by the wayside. One thing is certain, a hammer drill with accessories for 50 euros and less will offer exactly the value for money that is expected of it.

With the independent Nachkauf of the accessories the price frame can stretch from 3 to even 100 Euro. So if a considerable accessory is already available, then it should be accessed courageously.

Figures, data, facts about the hammer drill

A modern hammer drill is equipped with an SDS chuck and only works with fitting drill rods. In order to prevent the drill chuck from being scratched or otherwise damaged, it should be lubricated from time to time. This also prevents the drill from getting stuck. Before applying the grease it is also necessary to clean the drill chuck. Dust and dirt could otherwise affect the secure connection between drill chuck and drill. For greasing, it may be worth buying a grease gun.

The use of a hammer drill is recommended if the drill or percussion drill does not provide sufficient power. This is particularly the case when the walls are made of concrete, hard brick or solid natural stone. The hammer drill not only drills, but also pushes into the material. With the turn stop function the device becomes a chisel and also helps with demolition work on masonry. You can drill holes in the wall or tear down a whole wall. The higher the weight of the hammer drill, the more often you have to take a break. This should be taken into account when selecting the device.

For normal household use a hammer from 2 to 4 kg weight is usually sufficient. An output of 700 to 800 should generally suffice. The standard of the hammer drill test winner is at an idling speed of 900 per minute and an idling impact speed of 4000 per minute.

With a single impact strength of 2000 or 3000 Joule you have enough power for the usual work on masonry.

In order for the hammer drill to be properly equipped for the work at hand, it may be necessary to supplement the Drill Attachments. These drill rods must of course fit the drill chuck and also be cut to the material to be machined. Otherwise, premature wear can occur, so that the drills have to be replaced after only a few operations.

The multiple models of the drill hammers from our test 2017 are characterized by a high solidity, regardless of which area they were specially developed for. Information on special suitability can be found not only in the performance data, but also in the manufacturer's advice.

For which purpose do you use a hammer drill and how do you proceed?

Drilling hammers are mainly used for drilling and chiselling into mineral materials. The focus is on the craftsmen to whom the hammer drills have to adapt. Tests show that a different hammer drill is the ideal solution for every profession and job.

Electricians, locksmiths, carpenters, joiners, roofers and fitters

For example, electricians should always choose a hammer drill from the 2kg tests. This lightweight is the ideal tool for small jobs above the head. So for an electrician who plans to drill dowels from 4 to 14 mm in inhabited rooms, a suction hammer with battery and a weight of 2kg is the best choice.

But for lighter chiselling work and dowel drilling from 8 to 24 mm a battery-powered hammer from 3 to 4 kg is ideal.

Construction worker

For the other fraction, from master builders for renovation work or concrete constructions, bricklayers, gas and water installers, there are the higher weight classes. Not only the weight plays a role, but also the special application and other characteristics of the hammer.

Especially when drilling wood and steel, nothing can go wrong with such a hammer drill. However, concrete builders, locksmiths, bricklayers and electricians then opt for an even higher weight. Cannulations from 35 to 52 mm are suitable for the weight classes 5 to 10 kg.

Influence of the weight of hammer drills

The 5 kg class is therefore intended for chiselling work downwards or for horizontal chiselling work upwards. These are surface restoration works, which include removing plaster and other hard activities.

All other weight classes are used by demolition and construction companies. They are actually unnecessary for the local craftsman, since this investment can only be profitable with his small work with difficulty.

Which manufacturers make hammer drills and what can one say about you?

  • Bosch
  • Makita
  • Hilti
A name that most often came up here is Bosch. Not only that all of them owe the invention of the hammer drill to this GmbH, but the company remains the absolute top seller among hammer drill manufacturers to this day. The pioneer among the brands that drill through stone and concrete has contributed most of the development of this device. Bosch has been manufacturing hammer drills since the beginning of the 19th century. But meanwhile also a considerable competition grew up.
The competition comes from Japan. Meanwhile Makita has become a leading brand of power tools. Makita has been manufacturing tools since 1915 and distinguishes herself from others by the fact that she offers large electrical appliances at a high price and small tools at very reasonable prices.
In addition to her, Hilti, the red lightning bolt from Lichtenstein, is the number one in many fields. Where in Germany the Bosch hammer has become a synonym for the hammer drill, in many countries it is called Hilti. Many Eastern Europeans speak of a “Hiltovka” when they talk about hammer drills. The Hilti brand has become famous for its small electro-pneumatic hammer drill in the 5kg class.

These market leaders are followed by brands such as Einhell, Metabo and Black and Decker. Just like Bosch, Einhell is a German brand based in Landau. Perhaps the weakest manufacturer in this supreme discipline of hammer drills, a brand that is also celebrating solid success in other areas. Just like Metabo and Black and Decker, Einhell is just getting started and promises golden times for the hammer drill business with its innovations.

The use of a hammer drill as a newbie

This all sounds good.  But a small do-it-yourselfer, who would like to argue perhaps the first time with a drill hammer, has unresolved questions with its decision between drilling machine and drill hammer. The resemblance between the two seems very great.

  • In contrast to a percussive drill, with a hammer drill only safe holding and guiding is sufficient. A contact pressure has no influence on the result, which is why you can save yourself the trouble of pushing the hammer drill through the wall with your own power.
  • A small handy hammer drill that offers the ability to turn off its rotating motion and use the hammer for light chiselling work is a sensible solution for a craftsman. A contact function should indicate to the user whether he has hit a water pipe or something similar.
  • So the drill must switch off at the same time and thus warn against uncautious steps. When used on wood, it is best to equip the hammer drill with a drill chuck and thus ensure penetration into steel.

What safety precautions should you take when using a hammer drill?

Ablation is the manual and layered processing of a type of masonry. When using coarse and heavy tools you must pay attention to safety measures. There are steps to precaution, such as a stability of the workplace, which prevents accidents.

This means achieving as uniform a working plane as possible in order to avoid a slip hazard or similar. Incorrect use of a hammer drill can result in damage to health, as it is a strong and dangerous tool, just like any other tool.

To avoid damage to your body , you should take precautions such as the right equipment. This always includes

  • Ear protection
  • protective goggles
  • gloves
  • Safety shoes and
  • Helm.

The work clothes and gloves are indispensable, because a hammer drill can reach very slightly high temperatures. More than 30°C are below the limit and can also strongly influence the surrounding air temperature.

When the hammer drill is working under full load, it can easily happen that a fine jet of hydraulic oil can penetrate from the tool. This must never be checked with the bare hand, face or any other exposed part of the body.

If this happens, you must urgently consult a doctor. During application above the head or in the horizontal position, you must always pay attention to the fall of debris, or also to the fall of the drill.

You should also leave the device unattended never unattended and connected to an energy source even after use.

News: Hammer drill frees kittens

The fact that a hammer drill can also save lives was demonstrated in October 2018 in Gelsenkirchen. As the WAZ reports, the tenant had heard a meowing in the masonry and then informed the rescuers of all cats, the fire brigade.
It turned out that a kitten had gotten lost in the closed fireplace. It could no longer find its way out, which is why the fire brigade had to knock two bricks out of the wall with a drilling hammer. The little cat was unharmed and came to an animal shelter.


Which drills can I use for my hammer drill?

The hammer drills from our test are typically equipped with an SDS quick-action chuck. Most of these are the SDS-plus system, but other drill chucks can also be used. The larger machines often have an SDS-max system. This requires drills with a thicker shank. The SDS-quick system is also used for the smaller battery-powered hammer drills. The drill bits for this are particularly small. You can find out which brand drills are suitable for the respective hammer drill in the product description and also from the experts in the shops.

How much power in joules should the hammer drill have?

The power depends on the construction project for which the hammer drill is used. As a minimum value a performance of 2 Joule is often indicated. This makes the tool suitable not only for percussion drilling, but also for chiselling and chiselling. The test winners of the hammer drills often produce 3 joules or even more.

Do you need safety equipment when using the hammer drill?

Manufacturers recommend that users wear safety clothing that protects the body from small parts that may fly around. That's why you should wear protective goggles. Protective gloves are also useful, as it is almost impossible to avoid small stone particles flying in all directions during impact drilling and chiselling.

Must the helpers present take cover when percussive drilling?

If you are near the hammer drill, you should wear protective clothing or keep your distance. Otherwise there is a risk of injury from flying stones. A protective cap is therefore also recommended for the helpers.

How loud is the hammer drill?

The drill hammers from the test make a very loud noise. This is at the one hand due to the machine, at the other hand due to the drilling of the wall. For this reason, the hammer drill should only be used outside the resting hours and should only be used with respect to its neighbours. Depending on whether the model is older or newer, the decibel value is 108 to 120. This means that users should wear hearing protection as a precaution.

What's the deal with the SDS chuck?

Unlike a conventional drilling machine, the hammer drill has a drill chuck as a tool holder. SDS is the standard in modern hammer drills, with various explanations for the abbreviation. The notches are typical for the SDS drill chuck. These ensure that the power is transferred from the machine to the drill without loss.

Are the hammer drills also suitable for small jobs in the DIY sector?

The hammer drills are suitable for drilling into hard materials and can also be used for small renovation or assembly work, for example to drill dowels. However, it should be remembered that the hammer drill is not as precise as a drill. Depending on the project, the turning stop or the impact stop can be activated for small jobs.

What is the purpose of the turn stop function?

The rotation stop function deactivates the rotation of the hammer drill. That means you can't drill with it anymore. Instead, the hammer can be used for chiselling and mortising work without the rotary motion. The turning stop is set before the hammer drill is put into operation, depending on the work to be done.

Is there also an impact stop?

Some models of the drill hammers from the test have in addition to the turning stop also a blow stop. This deactivates the hammer mill in the machine so that it stands still while drilling is being carried out. So the turning mechanism here works alone. This can be useful if you want to drill a hole in a tiled wall or if soft material needs to be processed.

Is there a warning function for the hammer drill?

Some hammer drills have a contact function. This indicates to the user whether a water pipe, another pipe or a special obstacle has been hit during drilling. With this warning function, the device switches itself off immediately and thus avoids greater damage.

How to reduce dust during drilling?

Drilling with a hammer drill produces a lot of dust. No one is bothered by a major renovation or construction work. However, if the hammer drill is used in the living area, you do not want to clean the entire room afterwards. Here it can be useful to work in pairs: While one person is drilling the holes, the other person can place the vacuum cleaner directly underneath and thus vacuum away the dust and stone particles. This minimizes the dust flying around, so that only a few minor cleaning jobs are required.

Can reinforced concrete walls also be machined with a hammer drill?

Reinforced concrete is concrete reinforced with metal mesh. Reinforced concrete walls are primarily exterior walls or basement walls. You should be careful with a hammer drill when approaching such a wall. The drill can be damaged or broken by the internal metal grid. If things go very badly, the gear of the hammer drill will break. A percussion drill is therefore definitely unsuitable for the reinforced concrete wall. There are special drill attachments for the hammer drill which are equipped with a diamond tip. This is stable and also sharp enough to process the reinforced concrete.

Is it worthwhile to have a defective hammer drill repaired?

With the quality devices of the big manufacturers the repair is worthwhile mostly. These brands often have a repair service that is only offered for their own devices. One can inform oneself online about the corresponding addresses or call the manufacturer directly. Other repair services can also carry out repairs if necessary. Some workshops have specialized in the respective brands, so you should ask them beforehand if you are right with them. In any case you get the right spare parts, even if a certain waiting time has to be taken into account.

How much money do I have to spend on a good hammer drill?

The cheap hammer drills and offers are often already available for less than 80 euros. Here, however, one should take care that they provide the necessary performance and are not too unwieldy. Anyone who spends a little more will receive a powerful and reliable hammer drill for a price of up to 120 euros. The manufacturers guarantee even more quality if you invest 150 or even 200 euros. In addition to better durability and a robust tool case, there is often also a warranty.

Useful accessories

If the hammer drill no longer functions properly, the source of the error must be determined. Sometimes it is necessary to replace a part or carry out a repair. For this purpose the well-known manufacturers offer corresponding spare parts or accessories. Such a repair is particularly worthwhile for expensive branded devices. With the cheaper no-name products, due to the inferior quality, there is rather a defect, but you often do not get spare parts.

Basically, the hammer drill comes in a robust case, which also serves as packaging and means of transport. Such a case can also be ordered separately. Made of aluminium or hard plastic, it is not too heavy and still offers sufficient stability, so that the hammer drill itself is not damaged if you put it together with the case in the car or in the hobby cellar. Also for clean storage such a tool case is useful, because if it is tightly closed, the hammer drill is protected from dust and other dirt.

The accessories of the hammer drill naturally also include the Drill bits. These are typically supplemented by a pointed chisel. Also these drills and/or attachments find a firm place in the pertinent suitcase, so that nothing messes up equipment. When buying additional drills or spare drills, make sure that the correct size is used so that the drill shank fits into the quick-action chuck.

For safety, it may be advisable to purchase a extension cable with fuse protection for the electric hammer drill. The security features play a major role anyway, both in the device itself and in the accessories. There are special battery chargers for the battery drill hammer, for which one should pay attention to the corresponding safety equipment. Without overheating protection and similar safety features, it is better not to put such a charger into operation, otherwise a short-circuit may occur.

The Guarantee on the branded devices is not directly part of the accessories, but it is still worth asking the manufacturer or dealer about it. The renowned manufacturers often offer a warranty period of two or three years.

For do-it-yourselfers there are still many further accessories, which is needed with the employment of the drill hammer. On the one hand, this is about one's own safety, on the other hand it is about determined work. The equipment for percussion drilling should include the following:

protective goggles, hearing protection, work gloves, safety clothing, safety or work shoes, if necessary helmet.

The workwear and the gloves ensure that you are not injured by the stones splashing away and that you are also protected from the high temperatures of the hammer drill. In addition, many do-it-yourselfers feel better prepared when they dress their blue man.

A cable reel, a conductor, small material like dowels and screws as well as various other devices may not be missing in the hobby room. If you renovate a lot yourself and like to change something in your own home, you will need a lot of tools and material. This saves you the hassle of having to go to the DIY store all the time and, if necessary, you always have the necessary equipment at hand for your acquaintances.

Alternatives to hammer drill

Since the hammer drill has a different function than the drilling machine, it is not so easy to replace. Depending on the working environment, an alternative device can still be used in certain cases. The impact drill allows even more precise guidance when drilling holes in a normal hard building material. Compared to this drilling machine, however, there is no need to exert any additional contact pressure on the hammer drill. This makes handling easier.

An alternative to the chisel function is even more difficult to find. Of course, the wall to be torn off could be worked on several times with a hammer drill and then be attached with bars to chisel it away. However, this requires a very much higher force compared to the drill hammer. Besides, it takes a lot longer.

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