What is the difference between a hammer drill and a hammer drill
It is quite difficult to navigate the achievements of scientific and technological progress in the field of tools for repair and construction work. What is the actual question: “what is the difference between a hammer drill and a hammer drill?” To answer this question as specifically as possible, a comparative analysis of drilling machines should be carried out. So, perforators are designed for making holes in concrete, rock, brick, etc. At this stage, the similarity of this tool with an impact drill is obvious, since both belong to hand-held impact-rotary machines. However, on closer inspection, it turns out that the principle of operation of these instruments has cardinal differences.
As you know, the first rock drills were developed for the first time in 1851 for use in the mining industry. The first rotary hammers. piston machines using compressed air energy. Almost a hundred years later, a hammer drill, powered by electricity, appeared. At the same time, the use of this tool spread to repair and construction work. Drilling stone, assembly work, making holes in solid material. hammer drills have been doing this for many years. The specialization of this tool does not allow us to call it a purely household tool. Therefore, percussion drills are designed to occupy a free niche. Less, in comparison with a hammer drill, weight, low cost. these important factors are always taken into account when choosing a tool. The hammer drill, in addition to these parameters, also has a more extended area of action than conventional drills. In general, the presence of a shock principle of action in these instruments is necessary to increase consumer characteristics, their functionality.
Before giving the comparative characteristics of these instruments, it will not be superfluous to understand the definitions.
DRILL. (from German Drillbohrer) is a hand-held machine designed for making holes in wood, metal and other materials. Has a pneumatic or electric drive.
DRILLING MACHINES. tools with one, two or more speeds for drilling holes. There are reversible and non-reversible machines. The same group includes machines using shock-rotational action. These tools are successfully used to form holes in concrete, brick and similar materials in hardness.
HAMMERS AND OTHER IMPACT DRILLING MACHINES.
In mining operations, in various industries, jackhammers are used to break up a large mass of rock and concrete. And for the formation of large holes, special perforators are used, which have a shock-rotational principle of operation.
PRINCIPLE OF OPERATION OF THE IMPACT DRILL.
The differences between the hammer drill and the hammer drill are inherent in the very principle of operation. Let’s list them. So, a conventional hammer drill produces a hammer action due to the mechanical engagement of two flat gears called “ratchets.” Their task. in converting part of the rotational movement of the shaft, the force of the operator’s pressure into shock energy. This has a devastating effect not only on the stone, for example, but also on the drill itself. Strengthening the impact effect is achieved here by applying force on a hammer drill.
HOW THE PUNCHER WORKS.
The principle of the hammer drill is completely different. It has a built-in electromagnetic or electro-pneumatic impact mechanism, and its electric drive starts the reciprocating movement of the piston, which activates the “firing pin”. The striker, in turn, strikes the shank of the rock drill. The long service life is increased due to the creation of an air gap between the “striker” and the piston. This also makes the work easier, because the impact energy does not need to increase the pressure on the tool itself.
It is useful to compare the main technical characteristics of the tools we are considering. So, an impact drill produces 30,000-40,000 hits per minute, while a hammer drill will make about 7,500 hits. However, quantity here does not mean anything but quantity. After all, the impact force of the perforator is much greater (tenfold!). It follows from this that the weight. not the main thing to look for when choosing a tool. The comfort of performing repair and construction work depends not so much on the lightness of the tool, but on the quality of these works.
WHAT ABOUT LUFT?
If it is necessary to make small holes, when special accuracy is required, the hammer drill cannot provide “jewelry” accuracy, since it does not have the necessary axial stability. An impact drill, having a free-wheeling unit, also has an axial play, but it is less than that of a hammer drill.
As you can see, there is a significant difference between these tools. And, as often happens, these tools play a complementary role in carrying out repair and construction work. The power of one tool is favorably complemented by the “delicacy” of another. Thus, you can quickly and efficiently carry out the entire required volume of installation, repair and construction work.
Where and what is the drill used for
First, let’s talk about drills. Even a not quite knowledgeable person knows that with this tool, if necessary, you can drill large or small holes in almost any material. If the drill is equipped with a percussion mechanism, then it can also punch concrete walls (that is, work in percussion mode). However, this mode can be easily turned off by switching to traditional hole drilling, which is very convenient. But this area of use of the drill does not end there.
Depending on what material needs to be drilled, various types of drills are used, which both look different and are intended for different purposes.
So, for drilling a wooden surface, wood drills are useful, but in most cases they are replaced with ordinary metal drills. In some cases, feather drills are used to drill wood.
If you have to work with metal, then other drills are needed. more durable, having a certain design.
And with tiles and glass, you should be more careful. just look, instead of an even hole, a chip will turn out. Therefore, to solve such problems, there is another type of drill. These are lance drills for ceramics and glass.
For making holes with large diameters, core drills are the best option.
As mentioned above, when the hammer drill works like a hammer drill, it is capable of hammering concrete and brick. Although she will not become a full-fledged puncher, she can perform work of an average degree of complexity. For these purposes, drills with victorious tips are used.
To grind the surface with a drill, it is enough to use a grinding wheel as a nozzle.
If there is a need to clean various metal surfaces on the drill, it is enough to put on a special steel wire brush.
If the wire is in bundles at the brush. twisted, the processing will be rough. For finer finishes, use a corrugated wire nozzle.
If you need to mix some mass, then the drill can be easily turned into a mixer. For this, there is also a special nozzle.
This makes the impact drill a versatile tool capable of many functions. With some additional tools, it can work with a mixer, a screwdriver, and a grinding machine, or, when the chiseling mode is turned on. puncher.
The difference between a hammer drill and a hammer drill. put everything on the shelves
Looking at a showcase with a neatly laid out instrument, just eyes run up, percussion drills, punchers, screwdrivers. They are all a bit similar in appearance, and it seems to many that they are completely the same. Let’s find out in all the details how a drill differs from a hammer drill and in which case this or that tool can be useful to you. To begin with, we will consider why and in what cases this or that tool can be used.
What is the puncher used for?
This tool is used to break up any materials. It is often used by both cool “pros” engaged in construction and repair on an ongoing basis for several years, and home craftsmen.
Using a puncher, you can:
- drill a hole in concrete, brick, blocks
- remove the plaster;
- knock down the tiles;
- break off bricks;
- make slitting of concrete walls.
Without this tool, you can’t make repairs or build a house. It is convenient to work with it. it is fast and has almost no recoil.
Instrument attachments can be:
- core drills;
As for the rig, it can have a tail section of two systems. It’s either SDS Max or SDS Plus.
The SDS Plus system features four oval mounting grooves. Two of them are at the end and are open, the other two are hidden. When the shank is inserted into the chuck, it moves along the open slots, like a guide. Special locking balls fix it in closed holes.
Drills with SDS Plus shanks.
The SDS Max system has not four, but five notches for fastening. Now there are three open grooves, so the drill holds more firmly. This system is most often used in professional tools.
The chisel attachment is placed on the hammer drill when something has to be dismantled. The lance nozzle is used for chipping walls before laying wires or for making holes in the wall. The bit will help you make a large through hole.
Impact drill or hammer drill?
When choosing tools, the buyer is advised to focus on the amount of work to be done, and of course on the financial capabilities (a professional electric impact drill is not cheap). For serious repair work, it is better to purchase a hammer drill. The device will be able to make a hole in a concrete wall much faster and more efficiently (the drilling depth is higher), and it also has increased performance characteristics during intensive use. The device is equipped with an SDS-Plus adapter, it is not afraid of deformation, does not heat up.
For the home, the user is better off choosing a standard appliance. It is important for the master to remember that such a device is not designed for drilling hard materials.
The difference between a hammer drill and a hammer drill and which is better to choose
An electric drill is a versatile equipment that is widely used both at home and in professional activities, but few people will be able to answer the question “What is the difference between a drill and a hammer drill?” The appearance and the areas where they are used are similar, but due to the individual design features, the equipment cannot be called interchangeable. There are restrictions for the use of units.
What is the difference between a hammer drill and a drill?
The main differences include the following factors:
- Externally, the devices vary in size and weight, a cordless impact drill weighs the same as a standard device, the dimensions and weight characteristics of the hammer drill are much larger;
- The hammer drill has a standard type layout, the electric motor is horizontal. Thanks to this arrangement of the engine, the weight of the device is evenly distributed; during use, the master practically does not feel the load on his hands;
- The internal structure and technical characteristics of the devices are also different. To provide rotational and translational movements, the powerful drill is equipped with a gear-type ratchet assembly. When the normal mode is turned on, the parts do not intersect, when impact manipulations are needed for work. the gear chuck is responsible for the impact impacts. In a hammer drill, the mechanism is more complicated, separate shafts are responsible for the shocks. The impact movement is provided by an eccentric mechanism or an oscillating bearing that hits the ram.
What to look for when choosing?
When choosing specialized repair and construction equipment, we recommend paying attention to the following factors:
- The number of revolutions. It is better to give preference to a model that provides speed control;
- Power characteristics. It is important for the master to remember that the higher the power, the larger the device will be, therefore professionals recommend finding a middle ground;
- Chuck type (classic, manual, quick-release);
- Ergonomics. The convenience of a person during the work process directly depends on ergonomic design;
- The length of the electrical wire. Long electrical wire will allow the user to move freely;
- Overload protection. In modern models, an overheating protection system is provided (indicator or fuse).
- Rotary hammer or impact drill: which to prefer
- How to choose a puncher
- How to choose an impact drill
The hammer drill and hammer drill are widely used in any construction work. They have similar external characteristics, but this does not mean that one instrument can replace another. Professionals will never have doubts about the choice, since they know exactly the capabilities of both tools, especially since the principles of their work are very different.
The principle of operation of the punch
When the piston moves, it creates excess pressure, which pushes the firing pin forward and also returns it to its original position. The impact force of the hammer drill is much higher than that of a drill, which means that no special force is required to quickly drill a hole with sufficient depth. The hammer drill is designed for drilling holes in high density material such as reinforced concrete, rock or brick.
Rotary hammer or impact drill: which to prefer
What is the difference between an impact drill and a hammer drill?
To begin with, both tools should be characterized in order to most accurately indicate the functional differences between them.
How the impact drill works
Any hammer drill works in two modes: standard drilling and hammer drilling. The drill is designed for drilling small holes in walls made of porous building material. brick, aerated concrete, foam concrete, expanded clay concrete.
The hammer drill is equipped with two gears that rotate in contact with each other during normal drilling. In the shock mode, one gear moves back and is fixed motionless. The other gear slides over the stationary gear, making contact with it and moving away from it. With the impact mode of operation, the gears wear out, over time, the impact drill turns into a regular one.
The hammer drill also has two modes of operation: hammer drilling and hammer mode. For the hammer drill, special drills with grooves are used, thanks to which the drill, fixed in the chuck, can safely move forward and backward. In addition, the hammer drill mechanism is equipped with a special striker and piston, they then produce a blow.
The hammer drill is a professional tool, and its service life is much longer than that of a drill. When choosing a tool, you should, first of all, be guided by what you need it for. An ordinary drill is suitable for housework, and if a laborious task is ahead, for which you need a more powerful tool, then you should choose a hammer drill.
Difference between drill and screwdriver
In the modern market for power tools, you can find a wide variety of options that significantly facilitate construction, finishing and other types of work. When it comes to comparing a screwdriver and a drill, many people simply do not see any difference in these devices. Of course, they can be understood: in appearance, both power tools are very similar, even more. they can perform the same function. For example, many craftsmen use a screwdriver as a drill. that is, using a special drill, they make a hole (the main purpose of a drill). However, there is a difference between the two considered devices, and it is significant. In this article, we will focus primarily on the signs of the difference between them.
A screwdriver is necessary for tightening and unscrewing self-tapping screws and small bolts. The power tool has a built-in mechanism that stops the rotation of the chuck at the moment when the resistance of this rotation reaches its maximum. This is a very important point, because the mechanism prevents damage to the screwdriver attachment. By the way, you should definitely take into account that the above-mentioned mechanism is adjustable. Today, there are two main types of devices: screwdrivers that operate on the mains, and models that operate on a battery. Of course, the price of power tools is different.
Cordless screwdriver DeWALT
How To Use A Hammer Drill-Tutorial
A drill is needed to drill holes on various surfaces. It is widely used in construction, decoration, carpentry and assembly work. An interesting fact is that the first electric tool for drilling holes appeared in the middle of the 19th century, and since then it has been constantly improved. The modern drill has two modes of operation: normal and percussion. If in the first case everything is more or less clear. a drill is necessary for drilling ordinary holes in the wall and wood surfaces, then in the second one should be slightly more precise. Impact mode is activated when it is necessary to drill holes in stone or concrete, i.e. in harder surfaces.
Impact drill Bosch to contents
We have already found out that these power tools perform completely different tasks. But the main differences do not end there:
- The rotational speed of the screwdriver cartridge is significantly lower, plus there is no inertial moment. In other words, as soon as you turn off the screwdriver (release your finger from the button), the chuck immediately stops, while at the drill it spins for some time by inertia.
- Safety precautions. To work with a drill, experts recommend wearing safety glasses so that small particles formed during the drilling process do not get into the eyes. The screwdriver does not need to follow special safety precautions, you just need to be careful and careful when working with the attachment.
- Various operating modes. It was already noted above that the drill can be turned on both normal and percussion mode. Screw gun is regulated only by rotation speed, no more.
to the content
What is the difference between a hammer drill and a hammer drill?
At first glance, these are two identical devices, differing only in weight and dimensions. However, if you look under the hood, you can see their fundamental differences. Let’s figure it out.
Those of us who live in an apartment building have probably heard the sound of a hammer drill and a percussion drill, hammering a nearby wall. But do you know how these two devices work and how they differ from each other? We will tell you about their fundamental differences and explain in which case it is worth buying a hammer drill, and when you can get by with an impact drill.
The difference in the design of the striking mechanisms
Both devices have a percussion mode, but the mechanism for playing the beat is fundamentally different. The hammer drill is equipped with an electro-pneumatic mechanism for reproducing the impact. The engine rotates the shaft, the movement of which is converted into reciprocating movements of the piston. Compression is created between it and the striker, under the action of which the striker transmits the impact to the working nozzle (drill, chisel, drill or crown). Thanks to this work, the impact force is quite impressive, and the device can easily crush even the hardest concrete.
The impact mechanism of the drill has a completely different design. It consists of two ratchets (gears), one of which is movable, and the other is not. While the engine is running and the shaft is rotating, a rigidly fixed ratchet causes the movable to move back and forth with a certain amplitude. Thus, the impact is transmitted to the working attachment.
However, unlike a hammer drill, the drill itself transmits an impact impulse to the chuck itself, so the more we press the drill against the concrete, the stronger the impact will be. However, no matter how we press the drill against the concrete (even with our whole body on it), we will not be able to achieve the same impact force as that of a hammer drill, since the amplitude at the contact of the ratchets is too small. So for hammer drills, the impact force can range from 1.5 J for the weakest to 20 J for powerful heavy models. For example, the Bosch GBH 240 has an impact force of 2.7 J. this is a common indicator for a household rotary hammer, but it is also unattainable for a drill.
Difference in operating modes
The hammer drill has three modes of operation:
- hammer drilling.
The first mode turns the hammer drill into a jackhammer, which allows you to hammer in walls, dismantle old tiles and plaster, chisel a gutter for wiring, and much more. Impact drilling allows you to punch huge holes, for example for air conditioner mountings. No hammer drill can do this.
The drill has only two modes:
- hammer drilling.
But can a hammer drill completely replace a drill if it has more modes? Theoretically it can, but in practice everything is much more complicated.
First, the drill and hammer drill have different chuck rotation speeds. If a drill, for example, Makita HP1640, has a drill rotation speed of 2800 rpm, then a hammer drill has 1000 rpm or even less. These low RPMs may simply not be enough to properly drill through sheet metal. But for drilling wood is enough.
Secondly, the punch chuck is not rigidly fixed on the axis of the device, therefore, there will be a slight backlash during drilling. And if you use an adapter, then the backlash will be even greater. Because of this, there is a possibility of damage to the material that we are drilling. That is why you need to use a hammer drill for drilling only when the beat of the drill does not damage the workpiece material or the drill itself. For the same reason, we recommend using large drills with a hammer drill to drill small holes in metal, wood crowns and other large-sized bits. But drills thinner than 8 mm should be used with caution, as they can easily break due to backlash and beating.
The main differences from the hammer drill
These devices differ primarily in functionality. The main function of the hammer drill is hammering, and rotation is just one of the functions. It can work in three modes at once:
- Rotation with impact work.
- Impact work without rotation.
Rock drills use a pneumatic mechanism (like jackhammers) or electromagnetic coils. This explains the high power, you can not only punch holes in the walls, but also make grooves in brick and concrete for wiring, sockets and switches.
The main disadvantage of the device is its large mass, so the work requires more physical strength than with an impact drill, which is lighter.
The essential difference between the hammer drill is in the fastening of the working tool. Any electric drill has a cam chuck for the cylindrical shape of the tool, while in the hammer drill the tool is attached using special grooves. Therefore, you cannot use drills with a cylindrical shank on a hammer drill.
Important! There is a special device. a cam chuck, which is inserted into the hammer drill. Only with the help of such an adapter can you work on this tool with ordinary drills.
What is the difference between a hammer drill and a hammer drill and a hammer drill
For any construction and repair work, hand-held power tools are used. perforators, conventional and impact drills. At first glance, this tool looks similar, but differs in functionality. You should know how a hammer drill differs from a hammer drill and a hammer drill, what is the difference between these power tools and how to choose them correctly.
- How the impact drill works
- The main differences from the hammer drill
- Difference with a hammer drill
- Which is better to choose
Difference with a hammer drill
An impact drill differs from a non-impact drill by the presence of a ratchet mechanism, which transmits a reciprocating motion to the working tool. This function makes it possible to make holes even in brick and concrete.
A conventional drill is indispensable for delicate work when you need to drill a hole in thin or fragile materials. Smooth drill stroke allows for high surface finish and precision.
How the impact drill works
This drill is designed for drilling holes in metal, wood, plastic and durable materials. in brick and concrete. From the electric motor through the gearbox, the rotation is transmitted to the chuck, in which the cutting tool (drill) is fixed. For working with hard materials, bricks and concrete, one rotation is not enough to make a hole.
It differs from a conventional drill by the presence of a ratchet mechanism, which gives the tool reciprocating movements. blows, it is they that allow you to drill holes in solid material.
Important! Conventional drills are not suitable for such work, you must use a tool with a victorious tip.
The impact mode in such a power tool can be turned on and off. At idle, the striking mechanism does not work, it only starts when you press the tool.
What is better to choose
There is no universal tool. For fast and high-quality work, you need to choose the right power tool, from a hammer drill to a hammer drill. If you need to drill with infrequent percussion work, choose a percussion device For large volumes of work on brick and concrete, it is better to purchase a hammer drill.
The difference in power tools is not small. Of course, for high-quality performance of work, it is desirable for the master to have all three types.
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Service life and reliability
The period of use of instruments is another important parameter that determines the further purchase. An impact drill such as the Bosch EasyImpact 550 has a shorter operating time than a hammer drill. The advantage is that pneumatics reduces vibrations, therefore, working conditions will be optimal for the entire structure of the apparatus. A special coupling helps to eliminate breakdowns when the drill gets jammed. For example, if the element hit the reinforcement.
The working parts of the drill quickly become unusable, which is due to the acting load on the gears. As a result, vibration affects with great strength and rigidity, negatively affecting the tool components, disabling the elements.
Working attachments used and type of fixation
Another parameter that distinguishes the devices from each other is the working tool and the type of fixation of the element. Most often exploited:
In drills, as a rule, a working element is used in the form of a drill, on which a soldering from an alloy is applied. This option is relevant for concrete surfaces. It should be noted that the element is fastened to a special clamp in both versions. But their design is different in the devices. Rotary hammers involve the use of a number of systems that allow you to quickly change the working element. These are, in particular, SDS:
For fixing, special grooves with a special configuration are used. It should also be said about the degree of freedom in relation to the clamp in the direction of the axis. This approach helps to reduce the workload during work.
A standard drill is used only if the device is equipped with a special adapter or a chuck with a cam mechanism is installed instead of the traditional one. The latch facilitates quick and easy clamp changes. The standard model is included with the machine. When a cam variation is used, a structure is formed that consists of two clamps connected in series with each other, and one auxiliary. But in this case, beating occurs during the operation of the device, and the mount is not sufficiently rigid.
From the above, it follows that rock drills are used to solve a wide range of tasks compared to impact drills. In addition, they benefit in terms of power and performance. This means that this option is more relevant for performing complex operations. Drills are rational to use for solving small tasks.
HAMMER DRILL VS. REGULAR DRILLWhat’s The Difference?!! (Do You NEED a Hammer Drill?!)
Difference in working conditions
Especially significant differences are seen in the operating conditions of the tools. With the same parameters as the hammer drill, drilling and hammer drilling is easier, for example, with the DeWalt D25501K model. To provide optimal power, a drill force of 9-16 kg is required, and a hammer force 5 is required. A lower pressure value also reduces vibration on the hands, which is convenient for the user.
The hammer drill is more convenient, because in the design of the tool there is an air cushion, which has a softening characteristic. Due to this element, the docking of the tip of the striker and the piston with each other does not occur. This feature makes the hammer drill more practical in comparison with the drill.
Functionality of devices
The first difference is the functionality of the devices. This directly determines the operation of the tools. Drills are characterized by a wide range of applications, in particular:
- Drilling holes in thin coatings including wood and plastic surfaces. Using the switch uses the beat option.
- Making holes on hard surfaces. Here the impact option comes to the rescue, allowing you to work even on brick surfaces.
- Driving and loosening screws, screws and screws. But such actions should be performed subject to the disabling of the shock function.
Rotary hammers also perform the above tasks. In addition, these tools cope with punching holes in materials with high hardness. For example, reinforced concrete. In the process of work, various types of chisels are used, but on condition that it is necessary to make breaks or gutters in walls made of concrete or stone. Such tools operate in three modes:
- turns with blows;
- like a jackhammer;
- execution of turns without impact function.
Drills have only two modes. This is drilling with and without blows.
If you plan to drill holes in stone surfaces, then it is more advisable to choose a hammer drill. The productivity of these devices is higher than that of drills, which is explained by the indicator of the impact force. For light models, the value is 1.4-1.7 J, and for heavy models. 19-26 J. Working with drills, the impact is determined by the force of pressing the device to the surface. But even if the exponent is high, the value will be small because the amplitude of the pivot element is low. As a rule, the parameter is equal to the height of the gear tooth. The efficiency of the punch is also higher due to the mass of the device. Weight contributes to an increase in this parameter.
The hole made with a drill will be 1.5 times smaller than that made with a punch. When using a crown, the difference becomes even greater. In addition, professional rotary hammers help to solve the problem much faster. The result also depends on the version of the working element used, the power of the apparatus. But the hole made by the punch will always be bigger.
How an impact drill differs from a hammer drill: 7 main criteria
When it is necessary to carry out a series of repairs, it is recommended to use a hammer drill or impact drill. The principle of operation of the devices is similar, but the number of differences is the same as the general characteristics. Therefore, before proceeding with the solution of the task, you need to decide which is better: a drill or a perforator.
Behind the external similarity lies a number of differences that determine the capabilities of each of these tools. The design of the devices does not allow them to be interchangeable. As a result, operational restrictions are imposed. Therefore, about the difference between these two instruments, below.
Differences in striking mechanisms
The question is not which is more practical, but for what purpose the device is needed. The impact mechanism of the apparatus determines the main distinguishing features. Drills are distinguished by a simpler design. The “body” includes two ratchets, where one connects to the body and the other connects to the rotating chuck. When the shock option is disabled, these elements stop contacting each other, which is due to the presence of a special stopper.
When turned on, they interact with each other. This is due to the fact that the stopper is removed, and when the drill is pressed against the material, contact occurs. At the same time, the working element and the clamp for it are in motion, which is an axial reciprocating.
Perforators are distinguished by a more complex design, which is made in the form of a knot. The mechanism exists in two variations: electromechanical and electro-pneumatic. The second is used more often than the first, due to better performance.
The bottom line is that the engine rotates, which is due to the KShM conversion mechanism (crank-connecting rod). A special swinging assembly in the form of a sphere is also used. This leads to the fact that the cylindrical rod acquires a reciprocating motion. A space is formed between this element and the ram, in which a certain force acts, which leads to an increase in the movement of the latter. As a result, the element gives off energy to the working tool.
In other words, hammer drills are mechanics, and rock drills are pneumatic. Due to this, the amplitude and force indicators differ, respectively. With equal power, the functionality of the former will be lower compared to the latter.
The cost of the devices, accordingly, also differs, even if their power is the same. Under the same conditions, the price of a hammer drill is 3-4 times higher than a drill. For example, if we consider devices with a power of 700 W, then the Zenit ZDP-700 drill will be cheaper, while the Interskol P-24/700 ER perforator will be more expensive.
Models of tools Zenit ZDP-700 and Interskol P-24/700 ER
You need to choose a model based on a number of parameters:
- required power;
- working material;
- working conditions;
- the scale of the task at hand;
If the work is minimal, then buying a hammer drill is irrational.
There is no answer to the question “which is better?” Acquisition is determined by the scope of use and related conditions. If serious repair work is not expected, then it is optimal to choose an impact drill. It is suitable for wood and metal coatings, tightening fasteners. It is rational to choose a hammer drill when it becomes necessary to drill hard surfaces (stone, concrete, brick), prepare large holes or perform dismantling operations.
Watch the video “Rotary hammer and hammer drill: are they replacing each other?”
Tool and fastening
The hammer drill tool used for drilling concrete walls is most often a winnowed drill bit.
In a hammer drill and a drill, drills and drills are mounted in cartridges, however, their design is very different for a hammer drill and a drill. For a quick tool change, the rock drills use the SDS-plus, SDS-max and SDS-top tool clamping system (depending on the shank diameter, for more information about hammer drill chucks, see the article Punch). Fixation in the chuck takes place by means of specially shaped grooves.
In a hammer drill, the tool has a certain degree of freedom in relation to the chuck in the axial direction, which makes it possible to reduce the load on the hammer during impacts.
In order to use a conventional drill in a hammer drill, you must either use a special adapter, or change the chuck to a cam chuck. In a number of models, thanks to a special fastening system, the change of chucks is quick and easy, while the chuck for a conventional drill must be included in the set of the hammer drill. When using an adapter, a design is obtained from two series-connected cartridges. SDS and three-cam. The disadvantage of this option is the lack of sufficient rigidity of the drill attachment and its runout during rotation.
What is the difference between a hammer drill and a hammer drill
The hammer drill is used only for drilling holes and works in two modes: drilling without impact and drilling with impact.
At the same power of the tools, the hole diameter that can be obtained with a hammer drill is approximately 1.5 times the diameter that can be obtained with a hammer drill. The difference increases even more if a crown is used for drilling.
The rotary motion of the electric motor is converted by means of a crank mechanism or a special swinging spherical bearing into a reciprocating piston motion. Under the action of compression in the cavity between the piston and the ram, the latter accelerates and transfers its energy to the tool through the hammer. drill, chisel, drill, crown, etc. For more information about the punch device, see the article Punch device.
The impact mechanism of the drill is much simpler. It consists of two ratchets, one of which is connected to the drill body, the other. with rotating chuck. When the impact function is disabled, the ratchets do not contact each other due to the stopper located between them. When the drill is switched to the impact position, the stopper is removed and when the drill is pressed against the material, the ratchets begin to contact, slipping relative to each other. In this case, the chuck and the drill are given an axial reciprocating movement.
The difference in the design of the percussion mechanisms determines a significant difference in the technical and operational characteristics of the hammer drill and the hammer drill.
Impact drill ratchets are heavily stressed and wear out very quickly. Strong, hard vibration adversely affects all the mechanisms of the drill, disabling them at an accelerated rate.
How each of these tools differs from others?
The purpose of any drilling device is obvious. Make holes in various materials. Depending on the characteristics of the workpiece, a certain amount of energy is required for drilling. Different types of drills make the operator’s job easier, but there are also more advanced ways to improve tool efficiency.
For example, to give translational vibrations to the nozzle. Then the drill acts as a chisel or bolt. over, with a classic drill, even with diamond dusting, it is not possible to drill a hole in reinforced concrete in a short time and with one copy of the nozzle.
What is the difference between a drill and a hammer drill
The hammer drill works on the same principle as the hammer drill, only the chiseling mechanism is implemented differently. In this case, it is the impact energy that is used, taking into account the mass and inertia of the impact mechanism. Effort is realized with the help of compressed air. as in a jackhammer. Actually, the “jackhammer” mode is provided in any hammer drill, regardless of size.
In this video, the wizard talks with examples about the main differences between a hammer drill and a drill.
The principle of operation is as follows:
On the shaft with a chuck and a working attachment (chisel or drill) strikes a striker connected to the ram. The ram gets its energy from compressed air, which appears from the operation of the piston. The piston is driven by a crank mechanism or an oscillating bearing.
Schematic representation of the hammer hammer mechanism
The hammer hammer mechanism works with great force and amplitude. Air damper prolongs tool life and protects operator’s hands. At the same time, the work efficiency is an order of magnitude higher than that of an impact drill. Durability is also on top.
- High complexity (compared to a hammer drill) and cost;
- Bulky mechanism and high power consumption;
- Inability to perform more or less accurate work;
- The tool is heavy, therefore it is not easy to work with it for a long time;
- Regular lubrication and cleaning of the piston group and bit holding mechanism.
In this video you will find a comprehensive answer to the question: What is the difference between a drill and a hammer drill.
The comparative review addresses the following points:
- Visual comparison of rock drill and hammer drill;
- Attachment of drill and drill bit (difference in chuck);
- Tool power and performance;
- Convenience of work.
What to choose an impact drill or hammer drill?
- How each of these tools differs from others?
- How a simple drill works
- How the impact drill works
- What is the difference between a drill and a hammer drill
- Which power tool to give preference?
When choosing a home power tool, we tend to be guided by emotion rather than common sense. Mistakenly believing that “there is never too much of a good tool”, amateur craftsmen purchase bulky and expensive devices for performing simple household chores.
In order not to shoot at sparrows from a cannon, consider the most popular device. an electric drill and its functional varieties:
- The drill is simple;
- Hammer drill;
An electric shock drill looks very similar to a shockless one.
How the impact drill works
In addition to the normal torque, the hammer drill motor also provides a reciprocating motion to the chuck and drill. Due to this, the working edge of the drill splits the material at the point of contact, and by means of rotation removes the broken parts and removes them from the working area.
Drilling is much more efficient, but requires special carbide tipped drills. For example. victorious. They do not have cutting edges in the classical sense, but resemble a chisel firing pin. Only pointed shape.
Victory soldering on the drill
The device of an impact drill is more complicated than a conventional one. But not enough to radically increase its value. A ratchet wheel is located on the chuck axis. On the body there is a working bumper tooth. When the ratchet is locked (normal drilling mode), only the torque from the gearbox is transmitted to the shaft.
Working in this mode is no different from a conventional electric drill. When the master switches the hammer drill to the drilling-chiseling mode, the ratchet engages with the stop, and the shaft vibrates along the axis. The gear wheel seems to slide off the stop all the time.
In this case, the drill literally bites into the material. To reduce wear, the hammer mechanism works only when the drill is pushed in the direction of drilling. When idling, the shaft runs vibration-free.
The principle of operation of the impact mechanism of an electric drill
- Due to the constant friction of the ratchet against the stop, the wear of the mechanism occurs very intensively;
- Undamped vibrations gradually destroy the impact drill body;
The rotor and stator of the electric motor also experience parasitic vibrations, which also adversely affects the resource of the tool.
- Sharp shaking negatively affects the operator’s hands, increasing fatigue;
From constant work in the “drilling-chiseling” mode, joints begin to hurt.
- The force and amplitude of the reciprocating movements are small, therefore, such a drill is not capable of too strong and hard materials;
- Such a mechanism cannot provide the “chiseling” mode without rotating the shaft;
- Requires regular maintenance and lubrication of the ratchet.
How a simple drill works
The electric motor, using a gearbox, transmits torque to the chuck, and then to the drill. The operator creates pressure in the direction of drilling, the drill with its working edges cuts the material in layers, going deeper into the hole. This rule works when the material is relatively soft and pliable.
So to speak, if there is something to “cut”. Otherwise, the forces of the operator for the forward movement may not be sufficient. This is the main difference between a conventional drill and a percussion drill. An indisputable advantage is ease of use and the ability to perform work with high precision.
Shockless electric drill with speed switching function
The presence of a speed controller adds versatility in terms of drilling various soft and low-melting materials.
Which power tool to give preference?
The question is rhetorical. There is no universal tool. precisely, there are such copies. but no more than to formally fill the consumer niche. The quality of work leaves much to be desired. Therefore, a reasonable choice: each type of work has its own tool.
If you are drilling holes in familiar materials such as metal, wood or plastic. your choice is a conventional drill. The tool is compact, inexpensive, and not tiring to work with. Power (and, accordingly, size) is not difficult to choose.
If you need to occasionally punch brick walls. buy an impact drill. The power tool costs a little more, but gives a certain versatility. You turn on the “chiseling-drilling” mode only when necessary, the rest of the time you work with precision drills and pliable material.
At the same time, the compactness and low power consumption allow the use of the cordless version of the drill. A cordless drill is more like a screwdriver, but we’ll cover that in another article. For a large rock drill (even in the smallest version), the option with a battery is not available.
If you are starting repairs in the house, or building a garage, you cannot do without a puncher and this article will help you choose it. Especially if you need a classic jackhammer. In this case, you do not need to send a conventional or percussion drill to the closet. Compact and lightweight power tools are indispensable for fine finishing.