A hammer drill can be used to perform various works, which is due to its unique design. Just to expand the functionality of the tool, you will need appropriate attachments for the hammer drill. However, do not rush to buy them, since in the material we will pay attention to all kinds of attachments for hammer drills, as well as their main parameters and purpose.
What types of attachments are there for a hammer drill?
After the invention of the hammer drill, the functionality of this power tool expands every year. Expansion of functionality is achieved through the production of different types of attachments that are capable of not only drilling, but also chiseling, stabbing, destroying, drilling, kneading, tapping, hammering, etc. All these manipulations are carried out using special devices. The following types of attachments are produced for the hammer drill:
- Drills - for drilling holes in concrete and others similar materials
- Chisels are special devices designed for removing tiles and crushing concrete
- Pike - for punching holes in concrete structures
- Shovel - used for cutting channels in walls, which is carried out for the purpose of subsequent laying of communications
- A crown is a device that allows you to drill a large diameter hole in a wall.
- Mixers or whisks - for mixing and mixing dry and bulk materials
- Dust collectors are special devices that ensure dust-free drilling operations
- To remove paint - special types nozzles that allow you to remove paint from concrete surfaces
- Breach drill is a special type of drill that is used to make through holes in concrete and reinforced concrete structures
- Drill bits - for drilling holes in concrete and wood
- Vibrator - a device used to compact concrete mortar when pouring floors, walls and other structures
- For driving nails, a hammer drill can also be used as a hammer. For this purpose, a special device allowing nails to be driven into wood materials
- A hole drill is an attachment that is designed to drill holes not in concrete, but in the ground. When operating such a device, only high-power power tools are used.
Knowing what attachments there are for a rotary hammer, you need to pay attention to their consideration. Of course, the most popular are drills, which are used to drill holes in concrete, reinforced concrete and other similar materials. For this purpose, the drill is selected with the appropriate diameter, which depends on the technological task. Even if a concrete drill is included with the hammer drill, you will still need to purchase them additionally, since they tend to wear out.
Types of shanks on hammer drill bits
Before you understand the types of attachments for hammer drills, you need to find out what types of shanks are used on such devices. So, rotary hammers are divided into three main types according to their functional purpose:
- Household devices are an inexpensive type of impact power tool intended for infrequent use in the household. The design of such tools uses SDS plus type chucks
- Semi-professional - hammer drills that are designed for frequent use, for example, during construction and repair work. Depending on the power, semi-professional models can be equipped with two types of cartridges SDS plus and SDS max
- Professional devices - used exclusively for work. They have only two modes - drilling with impact and jackhammer, and SDS max type cartridges are used as the executive body
Depending on the types of cartridges, nozzles with corresponding types of shanks are used. They differ not only from each other, but also from attachments for drills and screwdrivers. Let's find out further what the differences are and what parameters different types of tail parts have on attachments for rotary hammers.
- SDS-plus is a type of shank that is characterized by features such as length, thickness and shape. The length of shanks of the sds plus type is 4 cm or 40 mm, thickness is 10 mm, and in shape it should be noted that they have 4 grooves. Two slots are open and two are closed
- SDS max - shanks on drill bits professional type. They differ from sds plus in such parameters as length - 90 mm, thickness - 18 mm, as well as the number of grooves. In addition to the fact that these grooves are larger in shape than on sds+, they also have 2 closed and 3 open type. This design ensures better engagement of the nozzle with the working mechanisms of the cartridge
- SDS-top is an older type of shank that has a diameter of 14 mm and a length of 70 mm. This is a cross between sds-plus and sds-max. Today they are extremely rare, and are produced exclusively for highly specialized models of rotary hammers
- SDS-quick is a shank that has a cylindrical shape with 4 parallel protrusions. Such attachments can be used not only in the chucks of special Bosch hammer drills, but also in the chucks of drills and screwdrivers
Today, Chinese developers have also produced a special shank design called Spline. They have a cylindrical part with splines that resemble a gear. Such devices are used on Chinese-made rotary hammers, which are equipped with special types of cartridges.
Having understood the types of shanks for drill bits, you should understand the features of these devices, their capabilities and purpose.
Drill bits for rotary hammers
One of the most common types of attachments for rotary hammers is the drill. It looks like a regular concrete drill for a drill, only instead of a cylindrical base for fixing in collet chuck, there is a special design SDS-max or SDS-plus. Drills are intended for making holes in concrete and brick walls. They consist of the following parts:
- The shank is the part that is recessed into the hammer drill chuck. Due to the special design of the shanks, the nozzle after installation has a backlash, due to which the impact movement is ensured
- The working part is a spiral, which is designed to remove dust and concrete particles from the hole being drilled. Spirals can be screw, as well as spiral and flat. If the augers allow drilling deep holes, then spiral ones are designed to make holes for installing dowels
- The tip is the cutting part, which also serves as a guide when performing related work. The tip is tipped with carbide materials, which increases the wear resistance of the drills and also extends their service life. The tips have not only a different number of edges, but also corresponding types of sharpening, which affects the quality and speed of drilling holes in concrete
Drills are produced different diameters from 12 mm to 60 mm, and they also have different lengths from 10-15 cm to 1 meter. Depending on the tasks at hand, it is necessary to select appropriate drills for rotary hammers.
Chisels for rotary hammers and their purpose
Structurally, the attachment called a chisel for a hammer drill is no different from metalworking tools. The main difference is the presence of a shank and the elongated shape of the working part. The main purpose of such a device is to chip away concrete, brick, and cinder block. During operation, the sharp part of the chisel becomes dull, so it must be sharpened on an emery wheel.
The chisel is also used to remove plaster and tiles from the wall, as well as ceramic tiles from the floor. Chisels have different thicknesses of the working part, as well as lengths, which has a positive effect on the ease of use of the tool with such attachments. The most popular devices are chisels with a working length of 25 cm and a thickness of 20 mm. They are produced for rotary hammers with sds max and sds plus cartridges.
This is interesting! Like drill shanks, chisels also need to be lubricated with special lubricants. This is done in order to reduce friction and also improve the quality of heat removal. During operation of a power tool with different types nozzles are heated. Moreover, it is not the tip of the device that heats up anymore, but the tail part, so it is necessary to lubricate it before starting work.
Lance or punch hole
When working with a hammer drill, you may need a device such as a punch or a lance. Their main purpose is to punch holes in walls and concrete structures. The lance is also suitable for chiseling bricks, as well as for chiseling walls for laying electrical wiring.
If it is necessary to cut a channel in a large wall for laying communications, then first use a grinder, which cuts grooves, and then a hammer drill with an attachment in the form of a chisel or a lance comes into play, which depends on the size of the channel. Peaks, like chisels, also become dull over time, so you can sharpen them. They also have different lengths of the working part, as well as thickness. They are an excellent replacement for a wall chaser.
Spatula and its purpose
The blade is also called a groove chisel, as it has a similar design. A flat spatula with a wide tip is actively used to remove plaster from walls, as well as to remove paint. Probably not for removing plaster. the best power tool than a hammer drill with a spatula-shaped attachment. In addition, the spatula is also used for gating walls when you need to create a large channel for laying communications.
When using a spatula, its tip also becomes dull, which can be sharpened using a special emery wheel. Typically, each hammer drill is equipped with such devices as a pick, a chisel and a shovel, so you will need to buy them in extreme cases when these tools fail or are lost.
Concrete core bits for drilling large diameter holes
Drills are used to drill a hole in concrete. But when you need to drill a large diameter hole, for example, sockets and switches, then core drills for concrete are used for the job. They have more complex design compared to drills for rotary hammers, and consist of the following elements:
- Shank - for securing in the tool chuck
- The working part is a bowl of the appropriate size, on the edge of which there are teeth tipped with pobedite or diamond coating.
- Drill - a centering element that allows, when drilling with a crown, not to be displaced from the intended zone
You can drill with drill bits not only concrete structures, but also reinforced concrete and even granite. Such nozzles can be used exclusively for drilling shallow holes in the wall. Among the features of drill bits, it is also worth noting that they can be dismounted or solid. Collapsible ones are considered more popular, since they allow you to change not only centering drills, but also bowls of the appropriate sizes. However, although they are multifunctional, they are also less reliable, depending on solid core drills.
There are two types of bowls on crowns - with and without holes. The presence of holes indicates that the nozzle does not require cooling during operation. If there are no holes, it means that the nozzle needs additional cooling during operation. Cooling is provided by watering or special cooling liquids. When drilling concrete, it is not necessary to use liquids, unlike those cases when drilling granite or reinforced concrete.
This is interesting! Core drills come in different diameters from 26 mm to 600 mm. Large-diameter crowns can only be used in high-power hammer drills over 1.5-2 kW. Drilling with crowns on concrete in a hammer drill is necessary in the “drilling with impact” mode.
Breach drill and its purpose
If in concrete wall need to drill through hole are large in size, then for such purposes special attachments are used - breaking drills. They are either integral or collapsible. Collapsible models allow you to change tips, which is necessary depending on the size of the hole you need to drill in concrete. Structurally, a drill bit for a hammer drill consists of the following parts:
- Different types of shank
- Extension cord - its length depends on the thickness of the wall. Typically the length of the extension cord is 50 cm or more
- Tip - in shape it is similar to a regular drill, only it consists of several spirals, and also has a large size (like crowns)
The design of the breach drill uses a centering drill, which makes it possible to prevent the nozzle from moving from the specified target. The destruction of concrete is entrusted to special teeth tipped with pobedite, which bite into the base and gouge out the concrete, thereby ultimately creating a hole.
Mixer attachments for rotary hammers
The hammer drill in drilling mode can be used as a low-speed drill for mixing solutions. To do this, you need to switch the hammer drill to drilling mode, and also reduce the rotation speed of the chuck. To mix dry mixtures, a mixer attachment, which has the shape of a whisk, is installed in the puncher chuck.
You can mix dry mixtures with such attachments, as well as ready-made solutions. Moreover, this can be not only substances such as gypsum, glue and cement, but also viscous bitumen mixtures. The design of the whisk is quite simple. You can make a mixer attachment with your own hands if you have welding machine. However, it is important to take into account that for each type of mixture, appropriate nozzle shapes are used. For sealants, whisks are used, which ensure effective mixing of the solution, eliminating the penetration of oxygen into the composition.
If you are faced with the question of which tool is better to use for mixing the solution - a drill or a hammer drill, then it is better to choose a hammer drill that has a high torque, in contrast to high-speed drills.
This is interesting! Did you know that when using a high-speed drill to mix solutions, the electric motor may fail. The reason for this is the large load, which increases the current flowing through the stator and rotor windings. When the winding heats up, the insulation is damaged and, as a result, the motor fails.
Concrete vibrator attachment for hammer drill
A special attachment called a vibrator is used exclusively when carrying out pouring work. concrete mixtures. The vibrator allows you to compact concrete when pouring floors, walls or ceilings. For a long time, instead of a vibrator, pins and various sticks were used, which were used to pierce concrete and manually remove air from the poured concrete. concrete mortar. It is important to use such attachments when pouring reinforced concrete structures.
The nozzle consists of a tip and an extension made of flexible materials. The extension has different lengths, which allows you to lower the vibrator head to a greater depth, which is especially important when pouring walls. The vibrator attachment is attached to the tool chuck, and in order to activate it, you must turn on the jackhammer mode on the tool. If you do not use a vibrator, then air accumulations will form in the structure of the concrete structure being poured, which, when the solution hardens, will become a weak point.
Nozzles for driving nails
You can also completely replace a hammer with a hammer. For this purpose, the cartridge design is equipped with special device. The design of the nozzle resembles an adapter. On one side there is a tip for fastening in the tool chuck, and on the other side there is a groove into which the head of the nail is recessed. The size of the groove depends on the size of the nail head, so when purchasing, you must take these criteria into account.
The principle of operation of such a nozzle is quite simple. The hammer drill switches to jackhammer mode, and a nail is inserted into the groove of the nozzle. After this, you need to point the leg of the nail in the direction where you want to nail it. Then, after pressing the start button on the hammer drill, the nail is quickly hammered in. In addition to the fact that such a nozzle is used for driving nails, it can also be used for driving pins and even grounding rods, eliminating the need to exert Herculean efforts to achieve results.
Dust collectors for working with a rotary hammer without noise and dust
If you need to drill a hole in concrete, but you don’t want to litter the room, then there are special nozzles that are designed to collect dust. This device is called a dust collector. It works in conjunction with a vacuum cleaner. An extension cord is connected from the vacuum cleaner to the device, which allows you to carry out work without creating dust. This is very convenient when, after finishing the renovation and arranging the furniture, it becomes necessary to make a hole in the concrete wall in order to hang a picture.
A device for a dust drill consists of a corrugated pipe that is attached to a tool chuck (this is a type of device). The length of such a pipe is 5-10 cm, which depends on the drill used in the tool. To remove dust, it is necessary to securely fix the nozzle to the base. It is important to take into account that it is not mounted on a cartridge that rotates, but on the back part behind the executive body near the auxiliary handle.
There are dust collector attachments that do not have an outlet for connecting a vacuum cleaner. This is a simplified version that allows you to work without dust. They differ in that the design does not have an additional hole for connecting vacuum cleaners. Such attachments are usually mounted on a drill mounted in a rotary hammer chuck.
A similar device is available for drills. Its main purpose is to be able to perform work with a hammer drill in places to which access is difficult or limited.
Attachments for drilling wood and metal
Hammers that have a drilling mode can be used to drill holes in metal and wood. For such purposes, manufacturers even produce corresponding attachments - drills with sds plus type shanks. If drills are used to drill small holes in metal and wood, hammer drills allow you to make large holes in these materials. This is achieved due to the fact that the tool has a large torque, so it can easily cope with the most complex tasks.
This is interesting! If you need to drill metal, plastic or wood, then this should be done exclusively with a power tool that has a drilling mode. If you drill metal in the drilling mode, then very quickly not only the drill, but also the executive body of the hammer drill will fail.
What is a hole drill for a hammer drill and why is it used?
Everyone knows such a tool as hand drill for drilling holes in the ground for installing posts. To automate this process, manufacturers produce special attachments that look like a drill bit.
Now you know what the nozzles for rotary hammers are called and what they are like. However, the functionality of the tool does not end with the above types of devices. There are also many options for attachments that you can make yourself to make removal easier. paint coating from concrete surfaces. In conclusion, it should be noted that the more powerful the tool, the greater its range of capabilities. If you have previously used a hammer drill only for drilling concrete, now you can significantly expand its functionality, saving on the purchase of various tools.
Repair, repair, repair. He gives birth to so many new ideas. In general, the time has come to hang a shelf in the already clean room, where cement and plaster dust is extremely undesirable. You need a vacuum cleaner attachment that will make the process of drilling holes in the wall a dust-free operation. I run to my laptop, quickly sketch out the model, start printing on the SkyOne 3D printer, and within an hour we’re already using:
After the first shelf I was almost satisfied with the attachment. Why almost? Because it’s inconvenient to hold it with one hand and drill with the other. The nozzle must fix itself on the wall; to do this, you need to increase the area of the “suction cup”. I calculated approximately what it should be like: my vacuum cleaner, which I use for construction work, can create a vacuum of 16 kPa according to the passport, but this is at zero air flow; we will only partially limit the flow by making a suction hole with a diameter of 20 mm. I think with this reduction you can count on 6 kPa. Let's convert it into more convenient kg/cm2 (1 Pa = 0.0000102 kg/cm2) and get 0.0612 kg/cm2. I think a suction force of 2 kg will be enough to fix the attachment well on the wall, but not tear off the wallpaper. As a result, you need to ensure a suction cup area of at least 32 cm2. Yes, the calculation is an estimate, imprecise, but I will then run the model through a flow calculation program, it is much faster than calculating manually.
Back to modeling. I tried to make the model so that it would print without supports.
I’m running it through the calculations, it’s interesting to know the flow speed in the suction and vacuum zone above and inside the nozzle.
The average flow speed in the drilling zone was about 70 km/h, I think this will be enough to capture dust from the drilling zone.
The average pressure above the nozzle was 101.1 kPa, below the nozzle – 95.4 kPa. The pressure difference is 5.7 kPa, lower than we wanted, taking into account the area of 32.7 cm2, the result is 1.9 kgf of suction. Taking into account the wear of the filter in the vacuum cleaner and air leaks on the sides, we will get 1-1.5 kgf, I hope this is enough.
A rotary hammer is very often used to process materials, the drilling or chiseling of which produces a huge amount of dust. These conditions contribute to the wear of the tool and its aggregate parts. It is with the aim of reducing the negative impact on the hammer drill that a dust collector was created. If we talk about factory devices, they are active and passive. Active ones have their own drive, but the cost of the tool increases, and significantly. Passive ones take power from the engine.
Everyone decides for themselves whether to install dust collectors or not. Some people use a vacuum cleaner, but this is not always convenient; you have to hold the hammer drill with one hand. There are many others homemade devices, which we will discuss below.
Homemade dust collectors
For a long time, paper and tape were considered the simplest dust collector - simpler design there simply isn’t and there won’t be. From these materials you can make a simple envelope, which is glued in place of the future hole. The dust settles inside the envelope, but if the drilling takes place vertically, you can use a paper cup. The disadvantages include the fact that some of the dust will still fly out under the influence of air. The advantages include simplicity and low cost.
Often the cut off bottom of a plastic bottle is used.
If we look at the design of the rotary hammer, we will notice that its engine is equipped with a fan for cooling during operation. This device can be used to make a dust collector on a hammer drill. To do this, you can take a hose and a plastic polypropylene corner for a 20 mm pipe and drill a hole in it for a drill. Then you need to take a container for dust and make a hole in it for the suction device of the hammer drill. Dust goes into the box when drilling.
Factory type dust extractor
A factory-type dust removal system can be included or sold separately - it all depends on the wishes of the buyer. The undoubted advantages include replacement filters, the ability not to violate the integrity of the instrument, ease of use. There is one significant drawback - the device is powered by the main motor of the hammer drill.
Self-contained dust removal system
TO independent means, albeit primitive, can be considered a vacuum cleaner hose. It is quite easy to use and does not require any financial costs. The hose can be placed next to the hole. But there are disadvantages to this method. Drilling with heavy hammer drills will require assistance, and some dust will still penetrate into the room.
Important! Recently, so-called vacuum dust collectors have appeared. They are made of durable casing and last for a long time.
Conclusion
To summarize, it is better to choose, of course, factory dust collectors, since they are convenient, compact and do not require additional work for manufacturing and installation. This is an option for those who prefer not to skimp on technical means. For those who prefer to put their engineering skills into practice, you can use homemade options. True, they will not get rid of dust 100%, but this is a less expensive method, although more labor-intensive.
Modern construction tools have a lot additional functions. They allow them to stand out from their peers and attract buyers. In addition to the fact that modern rotary hammers combine the functions of both a jackhammer and a drill, they also allow you to quickly change chuck attachments, select an operating mode, and control the quantitative indicators of rotations and impacts.
In addition to those listed, among the additional functions you can often find a built-in vacuum cleaner. This characteristic deserves closer attention.
What is it for?
Many people don’t even think about why the vacuum cleaner function is needed in a rotary hammer.
It's no secret that dust appears during the operation of a rotary hammer. Its quantity and composition depend on the material with which the work is carried out. Some may consider the presence of dust not such a big inconvenience, but it should not be underestimated.
- Dust also contains very small particles that settle on human skin and clothing. If they are constantly inhaled, respiratory diseases and allergic reactions may occur. In addition to a vacuum cleaner, you must use a respirator and protective clothing.
- This affects human comfort. Working in dust is not very pleasant, and it is simply impossible to hold a regular vacuum cleaner and work with a hammer drill at the same time. For people whose daily work is connected with this tool, the presence of a dust collector in it will greatly facilitate the work.
- Small particles of dust negatively affect the operation of the construction tools themselves. For example, the boot on the cartridge may fail.
- After any work performed with a conventional hammer drill, thorough cleaning is required.
Even if you only need to drill a couple of holes, you will then have to wipe off dust not only from the floor, but also from other surfaces. To reduce this step to a minimum, choose a model with a dust collector.
To make working with tools comfortable, do not neglect the function of the built-in vacuum cleaner. It will not be superfluous even with minor modifications, but professionals simply need it.
Kinds
All rotary hammers with different types dust collection systems can be divided into professional and amateur (for home use). Due to their high power and weight, professional ones are designed for certain types of work. Tools for regular use often combine several modes; they are less powerful and light in weight. Naturally, the cost of the former is several times higher.
Only a person who uses a hammer drill regularly can afford to buy them, professional basis. With the help of the latter, it is quite possible to make simple repairs with your own hands or periodically make several holes for household needs. Devices for collecting dust and small construction debris can be of different designs.
- Special dust removal system, to which you can connect construction vacuum cleaner. Their main advantage is their high power and ability to absorb large amounts of debris. Portable construction vacuum cleaners do not greatly affect mobility and convenience. Bulkier industrial vacuum cleaner models often have outlets for power tools, which is also convenient. In this case, each device operates autonomously.
- Built-in vacuum cleaner, the operation of which is directly related to the hammer drill engine. It can be removable completely or only in part of the container (bag) for collecting garbage. Such a dust collector partially conceals the power of the hammer drill and affects its wear resistance. This system is suitable for tools with light to medium performance.
- Dust collectors. The essence of which is that they prevent small particles from scattering into different sides and detain them inside the chamber. Usually these are plastic nozzles in the form of a cone (they are also called dust caps) or a cylinder. They come in a solid form or in the form of a ribbed cuff that can be slightly compressed to provide a snug fit. Some of them also have an input to which you can connect the hose of a regular household or construction vacuum cleaner. The choice of such dust collectors depends on the type of cartridge, model of the tool and the maximum possible hole parameters (depth and diameter).
In addition to the above items, there are universal devices, suitable for both a hammer drill and a drill and screwdriver. They are attached to the wall like a suction cup, and a construction vacuum cleaner creates a traction for dust.
Popular models
To make the advantages and disadvantages of rotary hammers with vacuum cleaners more clear, let’s look at several popular models.
- Bosch GBH 2-23 REA has proven itself to be exceptionally good. The design of the vacuum cleaner is easily removable. Inside you can see a filter and a container for collecting small construction debris, which is quite easy to clean. Without a filter, the tool works like a regular hammer drill with two modes. It copes well with the stated functions, holds more than 90% of dust and is convenient for transportation.
The only complaints were that when connected, such a unit is quite heavy and holding it is not as convenient as without additional details. Yes, and its price is somewhat overpriced.
- MAKITA HR2432 captivates with reliability and good characteristics. The dust collector can be detached - then you will get just a good hammer drill. The bag is very spacious, even with intensive work it can be emptied every two days. Unlike other analogues, debris does not spill out when the unit is turned over. The convenience of working with the ceiling is especially noted - dust does not fly into the eyes and cleaning is practically not necessary.
The complaint is that it only picks up small particles. Large pieces will have to be removed by hand.
The storage container is large enough to allow you to store the hammer drill when assembled.
These two models with a dust extractor are not the only ones, there are not many of them on the market, but there is a choice.
However, the choice of tool depends on the planned work.. To hang several pictures, you can take the first model. For larger actions would be better suited second.
How to do it yourself?
The choice of a dust collector largely depends on its cost. It is not always possible to make an expensive purchase. And when purchasing, it is difficult to take into account all the nuances.
If you have a hammer drill without a vacuum cleaner, you can purchase a dust collector separately. Or do it yourself without spending effort or money.
The simplest option for a horizontal position of the hammer drill is to make a pocket in the place of the future hole. Plain paper and masking tape work well for this.
When the hammer drill is in a vertical position, when debris flies from above, this method is not suitable. Here you can use any plastic utensils– be it a glass or a cut bottle. You need to make a hole in the bottom equal to the diameter of the drill. During operation, if the length of the drill is insufficient, the cup is crushed, but keeps the bulk of the debris inside.
