Rotary hammer or drill which is better for home

Tool characteristics

When choosing a perforator, it is necessary to take into account the main indicators of impact energy. It is measured in joules. A professional device can have an impact force of up to 15 joules, while a home device can only have 1–2 joules. The higher this indicator, the more efficiently the perforator works, and the larger holes it punches. If such a tool has too little impact force, then it will drill the wall more than drill, and the nozzle will quickly fail.

The second important indicator is the frequency of the striking movements. The more beats per minute the apparatus makes, the faster it will punch a hole. But more speed means more wear on parts in less time. That is why it is worth choosing only high-quality and well-known brands that have already proven themselves. The parts of such tools are made of higher quality materials. They are designed for increased loads.

The power in this equipment is not strategically important. The standard is a variation from 800 to 1200 W, depending on the type of cartridge used.

The frequency of rotation of the shaft is also not fundamental, unlike a drill. It’s all about the purpose of this function in the hammer drill. Rotation of the nozzle during chiselling is performed to remove the destroyed material, and not to create a depression.

In addition, the drill bits have a large diameter, and it is difficult for a low-power engine to rotate them at high speed. A large engine significantly increases the weight of the unit, which complicates its operation. That is why the standard shaft speed in the hammer drill fluctuates at an average level (from 600 to 1500 rpm).

And another important criterion for evaluating the tool is the type of chuck for installing drills and drills.

The punch has three of them:

  • SDS plus (the tool weighs 4 kg and punches holes up to 3 cm in diameter);
  • SDS max (weight. up to 11 kg, diameter. up to 5.2 cm);
  • SDS-top (average weight with a hole diameter of 1.6-2.5 cm).

The latter type of chuck is almost universal, it is installed mainly on Bosch rotary hammers and is optimal for home repairs.

As for the characteristics of the drill, the beat frequency does not play a key role here, since the maximum efficiency in the hammer mode is achieved by pressing the tool firmly. This is the main difference between rock drill and hammer drill specifications.

To successfully perform its main functions in a drill, power and shaft speed are important. The average power of the drill is 500–900 watts. If it is supposed to be used as a mixer, then this indicator should be significant. Then the tool will not overheat during use. However, the higher the power, the greater the weight of the apparatus. Therefore, for household work, it is better to choose average characteristics.

As for the shaft speed, it must be large. At its high value, the holes are drilled evenly. In a home drill, a high RPM helps to compensate for low power. Drill chuck type. cam or key. In the jaw drill, it can be clamped quickly and without the use of additional force. This simplifies and speeds up the process of changing the tip. The key cartridge is distinguished by the presence of an additional device in the form of a small key. It takes time to replace the nozzle, but as practice shows, such models break less often.

Perforator

This machine is designed for drilling, chiselling and breaking parts of particularly durable surfaces, such as reinforced concrete. It is used not only when doing housework, but also in professional construction.

A perforator not only punches concrete walls, but also splits tiles and bricks, removes plaster. It is also convenient for them to perform chasing (hollowing out a recess in the wall for wiring). At the same time, the special design of the handle and its material dampen vibration almost completely. Therefore, when working, the return is minimal.

This tool also has several modes of operation:

  • shock;
  • drilling;
  • punch drilling.

The force applied to it depends on the operating mode of the punch. When working with the percussion type, it is not necessary to additionally press on the tool, in contrast to drilling and even more drilling.

It should be noted here that only drills and blades are inserted directly into the hammer drill. Drills from a drill require an additional adapter.

Drill and hammer drill: what is the difference and which is better to choose?

  • Hammer drill
  • Perforator
  • Tool characteristics
  • How to make a choice

Periodic renovations in an apartment can make anyone think about buying their own tools. The modern market provides a wide variety of units for various jobs. Many of them have similar functions. And then a dilemma arises: what is more needed? One of the most common pairs of these tools is the hammer drill and hammer drill. To make a choice, you need to know their characteristics and the expected tasks that they will have to perform.

Hammer drill

This tool is mainly intended for drilling various materials. But its design includes a special percussion mechanism that allows the drill to make striking movements during operation. It’s like hitting a hammer. The function helps to work with durable building materials:

  • brick;
  • concrete;
  • stone.

As a rule, this device has a switch that changes from simple drilling mode to hammer drilling. It should be understood that a conventional drill is not enough for crushing strong materials, therefore a nozzle with a victorious tip is used. In addition, this tool is not designed for strong impacts with a large amplitude of longitudinal movements of the drill. The beating movements are carried out within a few millimeters, so they can rather be described as vibration of the drill during the operation of the tool.

The impact force of the drill depends to a large extent on the force of pressing the tool, therefore, in order to make a hole in a durable material, you need to make significant efforts, which is not suitable for everyone.

But the drilling capabilities of this tool do not end there. Attachments in the form of grinding wheels are perfect for the drill, on the sticky surface of which you can fix any sandpaper. This helps to sand the painted surface or putty on any material. Also, with the help of attachments, you can turn an ordinary drill into a brush for removing coloring compounds from metal. When using twisted wire, the processing will be rough, with corrugated wire. finishing.

Thanks to the fast rotating movements of this machine, you can mix cement or putty: just insert a mixer fork. The number of such attachments is varied, thanks to which the drill is a fairly versatile unit.

How to make a choice

From all of the above, the following conclusion can be drawn. If you choose between a hammer drill and an impact drill, then you need to clearly understand what tasks will have to be performed with this tool.

For chiselling, slitting and drilling, a hammer drill should be preferred. If you do not intend to knock out recesses or remove partitions, then an impact drill will be the best assistant in home repairs. Choosing a quality tool from a good manufacturer, you can get not only a drill, but also a hand-held concrete mixer and a grinding machine.

However, when buying any tool, you need to pay attention to a number of additional characteristics:

  • the presence of a relay for switching speeds;
  • the presence of a soft start function;
  • the ability to fix the button during operation;
  • handle shape;
  • additional equipment.

Ease of use of the device often depends not only on the power and availability of recoil, but also on the comfortable grip of the device. Comfortable handle with smooth transitions and indentations for fingers can greatly facilitate work.

As for the additional equipment, brand manufacturers put consumables in the kit. Most often it is a minimal set of drills or drills, a spare chuck and lubricant. The presence of these add-ons allows you to get started almost immediately after purchase. In addition, buying these parts separately, there is a risk of overpaying, since the difference in the price of the kit and individual attachments is striking. And on a complete branded device, you can save a certain amount.

In the next video you will find a review of the Sturm RH2591P rotary hammer.

How professional models differ from household?

Many tool manufacturers divide the manufactured units into professional and household.

In terms of functionality, they are the same, the difference is in the nature of their use. Professional models are designed for frequent or continuous use, they have an ergonomic design and a narrower specialization. You can work with such a tool all day long without worrying about its resource.

Another important parameter is performance. For professional units, it is higher. Among professional drills, there are models with a reinforced case, designed for intensive use.

To perform various tasks for repairing a house, in a garage, in a country house, it is quite possible to get by with household varieties. If you choose the right model in terms of price-quality ratio, then such a drill will fully justify the cost of purchasing it.

A household drill in terms of power and other parameters may not be inferior to professional counterparts. But it cannot be operated continuously. every 15-20 minutes the instrument must be allowed to cool down. That is, in other words, as long as the drill worked, it needs the same amount of time for it to “rest”.

If you observe the operating mode of the device, without allowing the motor to overheat, a household drill will last a long time. It is not recommended to use such a tool for more than 3-4 hours a day, otherwise it will fail.

Some manufacturers offer consumers an intermediate group of drills. these are the so-called Hobbi-class (or semi-professional) models. Such drills are superior in price and technical characteristics to household varieties, but inferior to professional ones. Owners of small workshops should pay attention to them. here the need to use a drill arises with a certain regularity, while the unit has time to cool down in between work.

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The tools of the Hobbi-class group are different:

  • good build quality;
  • advanced functionality;
  • good power parameters.

The power of semi-professional models can reach 1200 W, they can work up to 6 hours a day.

How to choose a drill for home

A drill, without exaggeration, can be called an indispensable tool for both a professional craftsman and an amateur owner. Hanging a picture, assembling and disassembling furniture, attaching a cornice or a shelf. it is almost impossible to perform all these operations without a drill.

With a quality tool at hand, it’s easy:

  • make holes in concrete, brick walls, in wooden surfaces;
  • screw in and out the screws;
  • drill holes of the required size in metal products;
  • carry out minor furniture repairs.

The modern market for tools intended for construction and repair is saturated with a variety of models. it is not surprising that it is difficult for an average person to understand the intricacies of choosing a suitable model.

The question is which drill to choose? What to look for when buying, so as not to regret the money spent?

What technical characteristics to pay attention to?

Having studied the main technical parameters, you will know how to choose a drill for home use without overpaying for unnecessary functions.

One of the main characteristics that determine the functionality of a drill is power. The higher this indicator, the wider the range of operations that a particular model can handle.

However, power alone is not always enough. you need to look at the functionality of the device as a whole. Typically 750-900 watts are sufficient for home use. The weight of these drills ranges from 2 kg to 6.5 kg. Models with higher power are heavier and larger, which increases the load on the hands.

Varieties with a power of 300-500 W cope with small amounts of work, they can work for a short time. They can be used to drill small holes in soft materials. It is necessary to take into account the following point: if the model is chosen incorrectly, then the hands will also get tired (not from the weight, but the fact that additional efforts will need to be made when working with the tool).

How different models differ?

Both professional and household drills are available in various designs: one and two speeds.

If you need a tool for intermittent use (make several holes, mix a small amount of putty, or tighten a few screws), a single-speed drill will do just that.

Drills with two speeds have advanced functionality, they can easily withstand serious loads, and you can start complex repairs with them. The two-speed models have a reinforced body and generally more power. Some instruments are electronically controlled, which makes it possible to use the instrument more accurately.

What are the types of drills for the intended purpose?

In addition to impact and hammerless drills, manufacturers produce the following versions:

  • drill-driver. lightweight, practical, easy to use, there is a reverse function;
  • cordless drill-screwdriver. convenient in that it is not “tied” to an outlet;
  • angle drill. a highly specialized tool, as a rule, not used in everyday life;
  • drill mixer. a powerful hammerless model that can mix building mixtures of various viscosities.

Drill, screwdriver or hammer drill?

The listed tools are similar in appearance, but they are designed to solve fundamentally different tasks and often cannot be interchangeable. The main difference lies in their main function:

  • screwdriver is designed for screwing and unscrewing screws, screws, screws, making holes;
  • the drill gives rotary motion to the drill in order to make holes in metal, wood, plastic;
  • in the hammer drill, the working part performs not only rotational, but also shock-translational movements.

Let’s dwell on the types of drills in more detail. There are unstressed and percussion models. The former are small in size and are used to perform precise work, for example, to drill neat holes.

Percussion instruments are larger in size and more powerful. they can be considered a kind of hybrid of hammerless models and hammer drills. The main difference is the hammer drilling mode. Thanks to this, such drills can cope with more complex tasks, for example, drilling holes in dense concrete, brick walls, stone.

A reasonable question arises, how does an impact drill differ from a hammer drill? Technically, both tools can handle most tasks. However, there is a difference. it lies in the functionality of the tools. With a drill, the blow is carried out mechanically, with a perforator. with the help of pneumatics. In addition, the hammer drill is always larger, heavier and more powerful.

You need to understand that the main function of the drill is to drill holes, and the hammer drill is designed to destroy structures, so neat types of work with high precision are “beyond his powers”.

When to Use SDS Plus VS When to Use SDS Max and the Differences Between Them

In professional drills, the power exceeds 900 W (can reach 1.5 kW and above). Accordingly, the weight and dimensions of the tool increase.

Next, you need to pay attention to the gearbox. a mechanism that transmits power by rotation. The type of gear device determines the reliability of the drill and its practicality. Distinguish between one- and two-speed devices.

Additional links increase torque. an indicator that allows the tool to perform difficult jobs and large volumes without heavy loads. When choosing a household model, you need to pay attention to the material of the gearbox housing. It is desirable that it be made of metal or plastic with good heat dissipation characteristics.

The next important parameter is speed control. The maximum number for non-shock models is 2600-3000 rpm. For professional models, the speed can reach 6000 rpm.

Impact drills generally have a higher RPM than non-impact drills. If you plan to use a drill with different attachments (grinding, polishing), then the number of revolutions in this case will play a decisive role.

Another important characteristic is the type of chuck and the maximum drilling diameter. The last parameter must be taken into account so as not to burn the instrument on the very first day of operation. It is important to adhere to the parameters specified in the instrument passport.

Most often in drills, a cam or quick-clamping mechanism for securing the drill. In a traditional toothed chuck, the drill is mounted using a special polygon key. In the quick-clamping mechanism, the installation of the working part of the drill is done manually by turning the chuck. From the point of view of fixation, jaw chucks are more reliable, but keyless chucks allow you to quickly change nozzles.

Keyless chucks, in turn, are divided into one- and two-case. Single-case cartridge is the most convenient.

When choosing a drill, you need to take into account the strength of the impact function (for impact models). This indicator is defined in joules. An impact force of 2 Joules is sufficient to drill holes in a concrete or brick base. If a tool is needed for chipping walls for electrical wiring, you will need a power tool with a higher impact force. In professional models, this indicator can exceed 5 Joules.

The drill can be equipped with additional functions. They make work more comfortable. These include:

  • reverse. the ability to change the direction of rotation (it will come in handy when using a drill as a screwdriver);
  • additional handle. it allows you to more securely fix the tool;
  • depth gauge. allows you to accurately adjust the drilling depth;
  • power button lock. prevents accidental pressing.

Which is better: hammer drill or hammer drill?

This question is often asked by inexperienced people who purchase a tool for the home. In principle, professionals do not have such doubts, since they certainly know that behind the external similarity there is a great difference that predetermines the capabilities of these two tools.

The drill is originally intended for drilling holes in materials of low density. in wood, plastic, soft metals. The addition of the percussion function has significantly expanded the capabilities of this tool, making it possible, among other things, to easily drill into brickwork and structures made of low-grade concrete. At the same time, like hammerless drills, with the proper equipment, they are able to work with fasteners. For all their versatility, drills have rather modest dimensions and are much cheaper than perforators. Thus, the main reasons for the popularity of impact drills among domestic consumers include their versatility, compactness and affordability.

Accordingly, rock drills are heavier and more expensive. If you compare tools with identical power, the weight and price advantage of rock drills will be obvious. For example, a thousand-watt two-speed drill Makita HP 2071 weighs 2.4 kg and costs about 5000 rubles. With its help, you can drill holes with a diameter of up to 40 mm in wood, up to 16 mm in steel, and by connecting the impact function, “drill” into concrete with a 20 mm drill.

For a hammer drill similar in power, the Makita HR 4010 C will have to pay three times more and it weighs 6.3 kg. In terms of functionality, a hammer drill is significantly inferior to a drill, since it only hammers or drills with a blow, and these two modes are unacceptable for making holes in wood and metals. But in terms of drilling concrete, the designated perforator is out of competition, since it will “pull” not only a large-diameter drill (up to 40 mm), but also a drill bit (up to 105 mm). In addition, this tool can easily replace a jackhammer and greatly facilitate the work of installing niches and openings, laying communications, chipping off old ceramic tiles, etc. Of course, such a hammer drill is intended exclusively for professionals and is unlikely to come in handy in everyday life.

However, among the hammer drills there are also “lightweights”: for example, the Makita HR 1830 weighs only 1.7 kg, and the price is inferior to the Makita HP 2071 hammer drill. Both of these tools work in the mode of drilling and hammer drilling. over, with the help of a drill, you can arrange technical holes of a much larger diameter in concrete (without taking into account hardness), and in wood, and in steel.

A natural question arises: what is the difference then? First of all, the difference in power consumption: for the compared hammer drill, the power consumption is 440 W, and for the drill. 1010 W. And this is the corresponding load on the network and the cost of paying for electricity on the one hand and the performance indicator on the other.

But the main difference lies in the purpose, in particular, in the main object of the application of efforts. For a drill, drilling concrete is an additional option, and in the hammer drilling mode, the tool works for “self-destruction” (more on that below). A hammer drill that easily breaks a monolith will not provide high precision drilling of holes in steel, wood and plastic. The reason for this is the design features of the percussion mechanisms of drills and perforators and the used cartridges for fixing the equipment.

rotary, hammer, drill, which

In impact drills, the impact is generated mechanically. Everything is extremely simple there. Two toothed ratchets in drilling mode without impact rotate interlocking teeth, as a whole. When the impact function is turned on, the internal ratchet (located closer to the engine) moves back, and the external one begins to “recount” its teeth with its own. As a result, impact energy is not generated as such: the impact force is predetermined by the height of the teeth and the pressure exerted on the tool by the user, and the impact frequency is determined by the number of teeth and rotation speed.

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This is where the aforementioned “self-destruction” comes from. No matter how strong and durable the material used for the manufacture of ratchets is, sooner or later the teeth will “come together” and the impact mechanism will finally fail.

The nature of the impact in rock drills is completely different. The crank mechanism converts the rotation from the engine into reciprocating movements imparted to the piston. That, in turn, drives the striker, but not directly, but through an air gap, which reduces the load on the piston, thereby contributing to the durability of the tool as a whole, and reduces recoil. Such a percussion mechanism is three times more effective and, of course, more reliable than a drill “ratchet”. In the presented model range of Makita rotary hammers, the impact energy ranges from 1.3 to 19.7 J (models HR 1830 and HR 5210C, respectively).

Some conclusions can already be drawn from the above. For example, that if intensive work on concrete drilling is ahead, then the hammer drill will “die” pretty soon, and the “heavy” one will not overcome at all. And it is true. But do not be fascinated also by the versatility of three-mode rotary hammers, which are declared by manufacturers as a jack of all trades. As a rule, these are instruments of light (up to 4 kg) and medium (5-8 kg) class. Such rock drills, and “heavy” ones too, are equipped with SDS-plus and SDS-max keyless chucks, designed exclusively for special nozzles. drills, blades, etc. whose shanks have a well-defined shape (the presence of grooves and their number). Consumables for rotary hammer drills are much more expensive than conventional drills, and the use of the latter is not possible due to the specifics of the cartridges. To expand the capabilities of rotary hammers, manufacturers quite often complete their models with additional cam chucks, which are mounted in standard holders of the SDS type using special adapters. At the same time, the tool becomes more cumbersome, and the beating of the chuck increases significantly, which does not benefit the quality. Interchangeable chucks are an alternative for more precise drilling. In this case, the main SDS chuck can be easily dismantled, and in its place, thanks to the adapted tip, a conventional cam chuck is installed. for cylindrical drills. An example is the Makita HR 2811 FT rotary hammer with a removable SDS-plus chuck. It should be noted that such an arrangement is not so common so far and significantly affects the price of the instrument.

So, answering the first question, we have already noted its incorrectness. Both drills and rock drills are equally good, but only in the area for which they are intended. The hammer drill is ideal for drilling holes in wood, metal, plastic, brick and lightweight concrete. In addition, it can be used to work with fasteners, and at low speeds as a mixer. A hammer drill is preferable where you often have to drill and hammer concrete (and reinforced concrete) of varying degrees of density, but it will not provide precision drilling in metals and wood. Rock drills, which are equivalent in power to impact drills, are significantly superior in weight and cost. When working with concrete, rock drills are much more reliable, practical and more durable than impact drills. The versatility of impact drills will come in handy in a domestic environment, and hammer drills are more “professional”. But if you live in a building made of glass and concrete, then in addition to an impact drill, it will be useful to have at hand, if not the most expensive and powerful, but a perforator.

Rotary hammer or impact drill?

Rotary hammer or impact drill?

What to choose an impact drill or hammer drill?

What to choose: an impact drill or hammer drill, what characteristics should you pay attention to?

Let’s talk first about the main technical characteristics:

But most of the impact drills and rock drills produced today have other interesting features:

Impact Drill and Hammer Drill Principles.

The principle of punching holes with an impact drill is that the rotation and impact action on the drills is transmitted from two ratchets in contact, while the impact amplitude is small, which significantly reduces its effectiveness, increases the force with which you need to press on the tool and vibration.

There are two-speed impact drills, according to the principle of operation, their mechanism can be compared with an automatic transmission of a car, due to this, they use the power of the tool more rationally.

Inside the punch, there is an electromechanical or electro-pneumatic percussion mechanism, which itself produces a blow, you just have to press a button. When working with a hammer drill, you do not need to exert effort. The rock drill is more durable when working with hard materials.

Consider, for a start, an impact drill from all sides.

Everyone has a long familiar shape in the form of a pistol, a collet metal cartridge. Power ranges from 400 to 1200W. Possibility of regulation of rotation speed up to 3500 rpm, switch of operating modes “drilling” / “chiseling”, button for holding the trigger in the working position. Here is the “gentleman’s set” that you will find in all well-known brands of hammer drills.

What can be squeezed out of the above?

Of course, the higher the power of the hammer drill, the easier it is to punch the hole of the largest diameter, but at the same time, the mass of the tool increases. For example, from the same manufacturer, with a power of 400W, an impact drill can weigh 1.4kg, and at 900W it can already weigh 2.5kg.

In terms of reliability, the quality of the tools of the above companies is beyond doubt. With proper operation (constant short-term work up to 40 s, high-quality sharp drills, both for wood and metal, and for concrete and brick, taking into account weather conditions, for example, work with a tool brought from frost, start no earlier than 1.5-2 hours) will serve you for a long time.

Now let’s turn our attention to the more powerful from 800 to 1500 W, heavy from 2 to 11 kg perforators. In contrast to impact drills, they are more overall, the motor of perforators can be located both horizontally (in the form of a pistol) and vertically (in more powerful models). They have an SDS chuck (to change the drill, just pull the chuck towards you) and the corresponding tooling.

You will appreciate a hammer drill if you need to drill holes in hard materials: for example, reinforced concrete or stone, it can drill large holes, with a hammer drill you can easily make a small hole in a solid wall or floor. Professional rotary hammers can also replace a jackhammer.

The technical characteristics of perforators indicate the force (energy) of the blow and the frequency of blows per minute. The first varies from 2.2 to 3J, and in professional hammer drills, for example, from 2 to 10J or from 5 to 18J. The second depends on the power and can be 4 4.5 thousand beats / min for less powerful and 2 3 thousand beats per minute for more powerful ones. There are usually two modes for drilling and chiselling, but sometimes there is also a combined mode. On perforators of low power there is a possibility of speed regulation, and, therefore, it is possible to use it as a screwdriver. But in view of the larger dimensions than that of an impact drill, this becomes more laborious.

It should be noted that due to the construction of the perforator, the passage of one centimeter deep into the concrete wall is several times faster than that of an impact drill. During work, it is not recommended to press on the tool, put it on the mark, press the button, and it will do everything by itself. In the case of a hammer drill, the expression “like a hot knife in butter” is very suitable.

So what should you choose? This largely depends on your desire and upcoming work. But, for example, if you yourself assemble and hang a kitchen and a couple of paintings at home, then, of course, we choose an impact drill. If you just moved into a new apartment, and you have to: chisel the walls, cut the jambs, hammer the floor, you definitely need a puncher.

The economic factor is also important, because a hammer drill is about one and a half times more expensive than an impact drill of the same company. Rotary hammer drills are also more expensive than hammer drills.

As for the choice of a professional or household tool, the main difference between them is that a professional tool is designed for constant serious loads, and a household tool is designed for periodic use.

Let’s take a look at the front of the upcoming work, look inside our wallet, and forward, for the tool you need.

Punch device

The hammer hammer mechanism can be electro-pneumatic or electromechanical. The former is more common, since it provides maximum impact force with relatively low power.

There are 2 versions of the electro-pneumatic percussion mechanism: in light devices, an oscillating bearing is used, in heavy or medium ones. a crank mechanism.

When the tool is turned on, the electric motor starts to rotate, the movement is transmitted to the inner sleeve of the oscillating bearing. At this time, the outer sleeve begins to oscillate. The air between the ram and the piston sets the ram in motion, it oscillates in time with the piston, striking the striker.

The striker strikes the drill fixed in the chuck.

The advantages of using a hammer drill are lower recoil and faster working speed.

Rotary hammer functions

Unlike a drill, a hammer drill can operate in three modes: impact, rotation and a combination of these actions. Therefore, the hammer drill can be used not only for drilling, but also for chipping the wall, creating holes and grooves of the desired size. It is indispensable when performing work on replacing wiring at home. An impact drill, even comparable in power to a hammer drill, will not cope with such a load.

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Punch device

Differences between impact drill and hammer drill

After learning the basic properties of both tools, it is easier to understand how one differs from the other.

Impact drill device

This tool has a less complex hammer mechanism, which consists of a pair of ratchets. One of the parts is connected to the tool body, the other to the chuck. If it is necessary to turn off the impact mechanism, a stopper is activated, which prevents the contact of the ratchets. When the impact function is on, the stopper moves so as not to interfere with the ratchets. Contacting, they set the chuck with the drill in motion.

hammer drill device

Even a person without special construction skills can handle a drill. For domestic use, for most home renovations and without the need to make many holes in hard materials, a drill is more suitable, since it has a wide range of applications and is much cheaper than a hammer drill. The cost of consumables for her is also lower.

This tool is used when you need to drill holes of different diameters and exact sizes in various materials (wood, metal, plastic, and others). A hammer drill can punch concrete, but the process will take longer than with a hammer drill.

The main difference

The difference between these tools lies in their main function: a drill is used for drilling, and a hammer drill chisels the working surface in order to make a hole in it.

To understand other differences, consider both of these devices in more detail.

Impact drill functions

Thanks to a variety of drills, holes can be drilled in a variety of materials:

  • for drilling wood, they take drills for metal or wood, in some cases. feather;
  • if necessary, make a hole in the metal, use durable drills of a special design;
  • lance-shaped, designed for working with glass and ceramics, help to drill neat holes in tiles without damaging them;
  • crown helps in cases where it is required to make holes of large diameter;
  • drills with a victorious tip allow you to work with hard materials (brick and concrete).

hammer drill

In addition to the usual ones, you can use additional attachments. They allow you to significantly expand the functionality of the device.

With the help of a grinding wheel attachment, you can quickly and efficiently grind the surface. A steel wire brush attachment will help clean any metal surface. For roughing, a twisted wire nozzle is used, and a better one is made with a corrugated brush.

If you purchase a special nozzle, then the drill can perform the functions of a mixer: it is able to quickly and thoroughly mix the solution.

In addition, a drill with the hammer cut off replaces the screwdriver. With its help, you can screw in and unscrew screws, self-tapping screws or screws, assemble furniture, hang shelves at home and carry out other operations.

With a puncher you can:

  • make holes in hard materials (brick, artificial and natural stone, blocks, concrete). Core drill is used when large diameter holes are required.
  • Remove plaster, brick or tile from the walls. To do this, you need to choose a chisel from the nozzles.
  • Perform chipping of the walls of the house. Need a lance nozzle.

The disadvantage of the tool can be called the fact that to perform some operations, adapters for nozzles may be required. this increases the already considerable weight of the device and makes it less convenient, lengthening the entire structure.

The hammer drill is a professional tool with a well thought-out and reliable design. It allows you to do heavy work at high speed. When self-repairing a house, most often you do not need such a powerful device, therefore, for household purposes, an impact drill is often used.

The main differences are:

  • Performance. According to this indicator, the hammer drill is many times superior to an impact drill, since the device has a powerful impact force and a weight greater than that of a drill, which contributes to its increase. If you take 2 devices with the same power, then the hole made with a drill will be 1.5 times smaller than the hole made with a puncher. The difference will be even more noticeable if you choose a crown bit instead of a conventional drill.
  • Borax mount. The drill has a chuck with a cam chuck, which does not provide a good retention of the drill, which can prevent it from turning. A new type of cartridge is used to mount the drill in the hammer drill. It holds the drill better and provides free movement. The drill change process takes a few seconds.
  • Appointment of the device. The main characteristic of a drill is the amount of torque, while the work of a hammer drill is assessed by its impact power. Therefore, it is incorrect to compare these tools. they initially have different purposes.
  • Precision processing. The hammer drill is designed for working with hard materials, and it is undesirable to drill metal or wood with this tool. the result may be of poor quality and, most likely, the hole will not exactly match the intended diameter. If you need to make a thin hole of a certain size, you should choose a drill.
  • Life time. In the hammer drill, the internal parts are pneumatically protected from shock loads and vibrations during tool operation. In addition, a protective sleeve is installed in the device, which protects it from damage if the drill gets stuck in a hole or comes across a reinforcing mesh in concrete.

What to choose: hammer drill or hammer drill?

What to choose: an impact drill or hammer drill, what characteristics should you pay attention to?

Let’s talk first about the main technical characteristics:

But most of the impact drills and rock drills produced today have other interesting features:

Impact Drill and Hammer Drill Principles.

The principle of punching holes with an impact drill is that the rotation and impact action on the drills is transmitted from two ratchets in contact, while the impact amplitude is small, which significantly reduces its effectiveness, increases the force with which you need to press on the tool and vibration.

There are two-speed impact drills, according to the principle of operation, their mechanism can be compared with an automatic transmission of a car, due to this, they use the power of the tool more rationally.

Inside the punch, there is an electromechanical or electro-pneumatic percussion mechanism, which itself produces a blow, you just have to press a button. When working with a hammer drill, you do not need to exert effort. The rock drill is more durable when working with hard materials.

Consider, for a start, an impact drill from all sides.

Everyone has a long familiar shape in the form of a pistol, a collet metal cartridge. Power ranges from 400 to 1200W. Possibility of regulation of rotation speed up to 3500 rpm, switch of operating modes “drilling”/”chiselling”, trigger lock button in working position. Here “gentleman’s set”, which you will find in impact drills of all well-known manufacturers.

What can be squeezed out of the above?

Of course, the higher the power of the hammer drill, the easier it is to punch the hole of the largest diameter, but at the same time, the mass of the tool increases. For example, from the same manufacturer, with a power of 400W, an impact drill can weigh 1.4kg, and at 900W. already 2.5kg.

In terms of reliability, the quality of the tools of the above companies is beyond doubt. With proper operation (constant short-term work up to 40 s, high-quality sharp drills, both for wood and metal, and for concrete and brick, taking into account weather conditions, for example, work with a tool brought from frost, start no earlier than 1.5-2 hours) will serve you for a long time.

Now let’s turn our attention to the more powerful from 800 to 1500 W, heavy from 2 to 11 kg perforators. In contrast to impact drills, they are more overall, the motor of perforators can be located both horizontally (in the form of a pistol) and vertically (in more powerful models). They have an SDS chuck (to change the drill, just pull the chuck towards you) and the corresponding tooling.

You will appreciate a hammer drill if you need to drill holes in hard materials: for example, reinforced concrete or stone, it can drill large holes, with a hammer drill you can easily make a small hole in a solid wall or floor. Professional rotary hammers can also replace a jackhammer.

The technical characteristics of perforators indicate the force (energy) of the blow and the frequency of blows per minute. The first varies from 2.2 to 3J, and in professional hammer drills, for example, from 2 to 10J or from 5 to 18J. The second depends on the power and can be 4 4.5 thousand beats / min for less powerful and 2 3 thousand beats per minute for more powerful ones. There are usually two modes for drilling and chiselling, but sometimes there is also a combined mode. On perforators of low power there is a possibility of speed regulation, and, therefore, it is possible to use it as a screwdriver. But in view of the larger dimensions than that of an impact drill, this becomes more laborious.

It should be noted that due to the construction of the perforator, the passage of one centimeter deep into the concrete wall is several times faster than that of an impact drill. During work, it is not recommended to press on the tool, put it on the mark, press the button, and it will do everything by itself. In the case of a hammer drill, the expression “like a hot knife in butter” is very suitable.

So what should you choose? This largely depends on your desire and upcoming work. But, for example, if you yourself assemble and hang a kitchen and a couple of paintings at home, then, of course, we choose an impact drill. If you just moved into a new apartment, and you have to: chisel the walls, cut the jambs, hammer the floor, you definitely need a puncher.

BEST ROTARY HAMMERS!

The economic factor is also important, because a hammer drill is about one and a half times more expensive than an impact drill of the same company. Rotary hammer drills are also more expensive than hammer drills.

As for the choice of a professional or household tool, the main difference between them is that a professional tool is designed for constant serious loads, and a household tool is designed for periodic use.

Let’s take a look at the front of the upcoming work, look inside our wallet, and forward, for the tool you need.

Provided by the site Tool Shop.No