Hammer Makita Red Light Flashing

It is difficult to imagine carrying out construction or repair work without the use of a specialized tool. a perforator. Hammers produce three classes: light, medium and heavy. All of them are equipped with a chuck with the ability to quickly change tools on the SDS system. The Germans say Steck-Dreh-Sitzt in the English version. Special Direct System. to whom it is more convenient. A standard developed by Bosch in the mid-70s of the last century.

Table of contents

  1. SDS shank. what, how, where
  2. Classification of accessories for punch video, video
  3. Selection and installation of drills for a perforator
    • Choosing a drill manufacturer for a hammer drill
    • Slurry Intensity
    • How to insert a drill into an SDS video cartridge
    • Video punch cartridge malfunctions

    SDS shank. what, how, where

    For convenient operation, quick change of the working tool, as well as to increase the contact area of ​​the drill shank with the chuck, the SDS standard was introduced.

    Hammer Makita Red Light Flashing

    Bosch has developed 5 types of shank:

    Two standards have become widespread and popular: SDS-plus. for light punchers and SDS-max. for heavy ones, as the most demanded in the construction market.

    Punch Tool Classification

    A modern rotary hammer is a multi-purpose tool. It is enough to choose the right equipment and you will have the opportunity to perform a wide range of construction works, from removing the tiles in the bathroom and ending with the expansion of the door or window opening.

    Most rotary hammers on the market operate in three modes:

    Yes, exactly so, drilling with an impact is called drilling. Each operating mode has its own equipment. State-of-the-art drill punch kits provide most basic operations.

    Impact mode. the main mode of the tool. Depending on the model of the perforator, the translational movement of the piston transfers energy to the shock mechanism and to the equipment (pneumatics). In some light punchers under the influence of a mechanical system. springs.

    Bosch rotary hammers are also equipped with the additional function of turning the chisel at a given angle (46 positions). vario lock.

    In shock mode are used:

    • shoulder blades;
    • peaks;
    • duct chisels;
    • semicircular chisels;
    • gear teeth;
    • mortar cutters;
    • ramming plates;
    • core boards;
    • sledgehammers.

    The drilling mode is used when drilling holes in concrete, brick and masonry. The simultaneous use of impact and rotational motion ensures rapid destruction of the material in the cutting zone due to crushing with subsequent sampling of the material. The drills used for such work are called drills or drill bits. Also in the drilling mode with impact, core drills are used to select material for future installation of outlet groups and switches. The length of the drill for the punch is from 100mm to 1m.

    Drilling mode is used for drilling wood, plastic and other soft materials. Also, a lightweight rotary hammer (up to 3 kg) can be used as a screwdriver.

    Important. Drill mode without impact must be used with certain specifications. When operating only in rotation mode, the hammer must be put into rotation mode with a shock and idle to distribute lubricant inside the tool.

    Selection and installation of drills for a perforator

    As the earlier ones said, among 5 Bosch standards, two were widely used: SDS-plus. with a shank diameter of 10 mm and SDS-max. with a shank diameter of 18 mm.

    Accordingly, most rigging is performed to these standards. Of course, it is possible to use equipment with an SDS-max shank on lightweight rotary hammers, but this is not advisable due to their low power, which will lead to a decrease in tool life.

    Choosing a drill manufacturer for a hammer drill

    Only a dozen or so (to be precise 14 companies) manufacturers of drills for perforators are registered in the world. At the same time, several brands can be produced at one factory. So, in Germany, the DreBo Werkzengfabrik factory produces products for Hitachi, AEG, Milwaukee, Wurth.

    In this case, there is no doubt about the quality of the drill. At the same time, these brands are also successfully produced in China.

    But not all of China is of poor quality. So, the same Bosch has its plants in China. Products manufactured under the Bosch brand are no worse than their European counterpart, and in some cases even better. The main thing is to get into an industrial producer, not a scrub.

    Slurry Intensity

    Sludge discharge is one of the most important properties of drills. The quality of drilling directly depends on the speed of removal of crumbs. For shallow holes (up to 60 mm) drills with a small slope of the helical grooves are well suited. For more intensive drilling, it is necessary to use a drill with a steep spiral. The disadvantage of this equipment is a decrease in the strength of the drill body.

    Screw drills are removed as quickly and efficiently as possible. They are most effective for drilling deep holes.

    How to insert a drill into an SDS cartridge

    Installing a drill in an SDS cartridge is not a big deal.

    Before installing the working tool, you should make sure that the tool is working, make sure there are no chips and cracks on it, and check if the rubber boot is broken. It must be cleaned of dust. After this, you need to apply a specialized lubricant to the slots of the snap and insert it with effort into the perforator cartridge.

    Press it until it clicks. Pull the drill toward you, if it cannot be removed, the installation is successful. To replace the drill, it is necessary to squeeze the cartridge ring along the axis towards the tool and remove the drill.

    Important: During operation, the drill heats up; change the equipment only with gloves to avoid burns.

    To increase the operating line and prevent accelerated wear, the tool, like the tool, must always be kept clean, removing excess grease and dust adhering to it.

    In my Varyag punch, as in any other, I insert a drill according to the following procedure:

    Before you start replacing the drill or working with the tool, you must make sure that it is working. To do this, insert the plug into the outlet, and put the hammer into the drilling mode without a fight (left extreme position). After that, the start button is pressed. If you hear an even sound, devoid of glitches and jerks, you can get to work.

    Install the drill chuck and drill for the punch only with the plug unplugged from the outlet.

    You need to purchase a special chuck that fits your rotary hammer model. If you can’t choose or don’t know which cartridge is needed, it’s best to take a tool with you and try compatibility on the spot.

    Today, rotary hammers are equipped with two types of cartridges. keyless and keyless. The key option is traditional, the drill on a tree for a puncher in it is clamped using a special key. In this case, the mount is reliable, but less convenient than that of the quick-release chuck. The keyless chuck easily clamps the drill without the aid of any tools. Just choose the most suitable option and follow the further instructions.

    Before you fix the drill in the punch, you need to decide on the type, if you want the work to be done correctly. The color of the drill indicates the form of the final result.

    If the drill is painted black, it means that it was treated with superheated steam, but this does not affect the quality, despite the popular opinion that black drills are stronger. If the drill has a brown or slightly golden hue, most likely it was subjected to tempering to relieve internal stresses. Drills that are processed with titanium nitrile have a bright golden color, such options are the most expensive and durable.

    As a rule, good companies indicate on the drill box its characteristics, such as the grade of steel and the material with which it is possible to work. If the drill heats up significantly during operation, it means that it has become dull or has been sharpened incorrectly.

    If an old drill bit is inserted in the punch, it must be carefully replaced. Before pulling out any nozzle, be sure to pay attention to the type of its cartridge. Remember, the keyless and keyless chuck. The key is more reliable, especially when working in shock mode. This cartridge is made of metal, therefore it is less exposed to mechanical damage.

    Before you pull out the drill from the punch with a double-coupled quick-clamping chuck, it is imperative to switch the device to reverse mode. After that, it is necessary to fix the lower coupling with one hand, and with the other, unscrew the upper one. In a one-jaw cartridge, the nozzle can be replaced with only one hand, since it is placed on rotary hammers with automatic locking of the shaft.

    There are times when the working tool is stuck in the cartridge and does not want to be pulled out. Here you need to know the following. To gently pull out the nozzle, it is necessary to clamp its free part in a vice and hammer the cams of the chuck through a wooden extension with a hammer until the drill tail comes out of the quick-clamp chuck. If the drill bit is stuck firmly in the punch, and this does not help, you can remove the cartridge and place it in gasoline, and drop a little automobile oil into the key cartridge.

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    Also, there are often situations when the drill gets stuck in the wall during concrete construction work. This occurs during clamping between concrete and reinforcement. You must stop pulling the trigger and loosening the hammer, as it may break. To get started, pull the drill out of the chuck, replace it, and begin to carefully knock out the concrete around the stuck drill. Avoid getting stuck in a drill. After this procedure, a stuck drill can be removed without difficulty.

    For proper operation of the tool, it is necessary to lubricate the punch with special grease. It is better to purchase a proprietary product that is resistant to water and prevents moisture from entering metal surfaces, which prevents corrosion from appearing.

    To do this, open the tube with grease and squeeze a little into the hole into which the nozzles are inserted. Next, the tool is placed on the floor or on another hard, solid surface with the handle, after which the back of the punch head is pulled down, the chuck is inserted, and the lower part of the head returns to its previous position.

    After the above steps, you can insert the Makita drill bit into the chuck. Then, by rotating the upper part of the cartridge clockwise, it is necessary to clamp the drill. After this, be sure to check whether it is firmly fixed.

    If you understand that the drill is loose, try tightening the chuck harder. After the final fastening and compliance with all actions, you can turn on the hammer in the network. Press the start button several times so that the grease can disperse well into parts.

    Before starting work, you need to make sure what mode the tool is in. For one minute, he should be idling. Be sure to check the operation of the gearbox so that it does not emit vibrations, excess noise or sounds. Nor should smoke or odor resemble burning insulation.

    How to insert a drill into a perforator?

    Getting a drill is just as easy, read the next section: How to get a drill from a punch?

    In my Varyag punch, as in any other, I insert a drill according to the following procedure:

    Before you start replacing the drill or working with the tool, you must make sure that it is working. To do this, insert the plug into the outlet, and put the hammer into the drilling mode without a fight (left extreme position). After that, the start button is pressed. If you hear an even sound, devoid of glitches and jerks, you can get to work.

    Install the drill chuck and drill for the punch only with the plug unplugged from the outlet.

    You need to purchase a special chuck that fits your rotary hammer model. If you can’t choose or don’t know which cartridge is needed, it’s best to take a tool with you and try compatibility on the spot.

    Today, rotary hammers are equipped with two types of cartridges. keyless and keyless. The key option is traditional, the drill on a tree for a puncher in it is clamped using a special key. In this case, the mount is reliable, but less convenient than that of the quick-release chuck. The keyless chuck easily clamps the drill without the aid of any tools. Just choose the most suitable option and follow the further instructions.

    Before you fix the drill in the punch, you need to decide on the type, if you want the work to be done correctly. The color of the drill indicates the form of the final result.

    If the drill is painted black, it means that it was treated with superheated steam, but this does not affect the quality, despite the popular opinion that black drills are stronger. If the drill has a brown or slightly golden hue, most likely it was subjected to tempering to relieve internal stresses. Drills that are processed with titanium nitrile have a bright golden color, such options are the most expensive and durable.

    As a rule, good companies indicate on the drill box its characteristics, such as the grade of steel and the material with which it is possible to work. If the drill heats up significantly during operation, it means that it has become dull or has been sharpened incorrectly.

    If an old drill bit is inserted in the punch, it must be carefully replaced. Before pulling out any nozzle, be sure to pay attention to the type of its cartridge. Remember, the keyless and keyless chuck. The key is more reliable, especially when working in shock mode. This cartridge is made of metal, therefore it is less exposed to mechanical damage.

    Before you pull out the drill from the punch with a double-coupled quick-clamping chuck, it is imperative to switch the device to reverse mode. After that, it is necessary to fix the lower coupling with one hand, and with the other, unscrew the upper one. In a one-jaw cartridge, the nozzle can be replaced with only one hand, since it is placed on rotary hammers with automatic locking of the shaft.

    There are times when the working tool is stuck in the cartridge and does not want to be pulled out. Here you need to know the following. To gently pull out the nozzle, it is necessary to clamp its free part in a vice and hammer the cams of the chuck through a wooden extension with a hammer until the drill tail comes out of the quick-clamp chuck. If the drill bit is stuck firmly in the punch, and this does not help, you can remove the cartridge and place it in gasoline, and drop a little automobile oil into the key cartridge.

    Video: Hammer Makita Red Light Flashing


    Also, there are often situations when the drill gets stuck in the wall during concrete construction work. This occurs during clamping between concrete and reinforcement. You must stop pulling the trigger and loosening the hammer, as it may break. To get started, pull the drill out of the chuck, replace it, and begin to carefully knock out the concrete around the stuck drill. Avoid getting stuck in a drill. After this procedure, a stuck drill can be removed without difficulty.

    For proper operation of the tool, it is necessary to lubricate the punch with special grease. It is better to purchase a proprietary product that is resistant to water and prevents moisture from entering metal surfaces, which prevents corrosion from appearing.

    To do this, open the tube with grease and squeeze a little into the hole into which the nozzles are inserted. Next, the tool is placed on the floor or on another hard, solid surface with the handle, after which the back of the punch head is pulled down, the chuck is inserted, and the lower part of the head returns to its previous position.

    After the above steps, you can insert the Makita drill bit into the chuck. Then, by rotating the upper part of the cartridge clockwise, it is necessary to clamp the drill. After this, be sure to check whether it is firmly fixed.

    If you understand that the drill is loose, try tightening the chuck harder. After the final fastening and compliance with all actions, you can turn on the hammer in the network. Press the start button several times so that the grease can disperse well into parts.

    Before starting work, you need to make sure what mode the tool is in. For one minute, he should be idling. Be sure to check the operation of the gearbox so that it does not emit vibrations, excess noise or sounds. Nor should smoke or odor resemble burning insulation.

    What is a hammer drill, how does it work and what is it used for

    Perforator. a tool designed for surface treatment of building structures and building elements, drilling holes of various diameters in walls and slabs. Differences in the design of the guns are due to the variety of models, their modifications and technical additions. The basic principle of the device and its design are saved in all models.

    Shock mechanism

    The design of any hammer drill is based on a piston shock mechanism activated by any drive: electric, hydraulic or pneumatic.

    When the “Start” button is pressed, an electric motor starts, transmitting rotation through the gear to the swinging bearing, which moves the piston and the hammer in the cartridge. Thanks to this interaction, the tool in the chuck receives a rotational and reciprocating movement along its axis. The hammer transfers the shock impulse to the instrument in the cartridge, which destroys the material.

    Hammers are also equipped with special systems that make work more comfortable and safer: a vibration reduction system, a drilling depth limiter, a system for changing operating modes, a locking mechanism for the working tool in the cartridge.

    Preparing the tool for work

    Proper use of the punch provides strict adherence to the requirements of the instructions and operating instructions. Violation of these rules will lead to an early breakdown of the tool without the possibility of repair.

    The most common mistakes when working with a rotary hammer:

    • exceeding the permissible load on the tool;
    • long continuous operation, in which the elements of the drive and gearbox overheat and can fail;
    • neglect of the requirements and terms of maintenance of the tool;
    • violation of lubrication regimes, the use of low-quality lubricants;
    • performance of work not provided for by the operation manual.
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    Before starting work, the tool should be inspected. It is necessary to verify its completeness, in the absence of mechanical damage to the tool body and chuck. Check the integrity of the insulating layer of the network cable. Make sure that the working tool (drills, drills, crowns) does not have cracks or chips, the cutting edges are sharpened sharply.

    After that, you should perform a trial inclusion and idling. Be sure to check the functionality of the buttons and toggle switches for controlling the speed and direction of rotation of the cartridge.

    If you were at the facility for the first time and have not yet turned on the electrical equipment, make sure that the wiring of the local network has a sufficient cross-section to provide a powerful hammer drill with energy. Otherwise, the cable will overheat, the insulation will melt, a short circuit will occur.

    For safe work with a hammer drill, personal protective equipment will be needed:

    • transparent glasses;
    • gloves
    • closed shoes;
    • overalls;
    • headphones or ear plugs.

    The rules of personal safety should not be neglected when working with such a powerful power tool. Shards of solid materials and dust can be harmful to health.

    How to use a rotary hammer in different modes

    For convenience and the correct execution of various types of work, punchers have several operating modes. A toggle switch is provided for their switching.

    Most modern rotary hammers work in three modes:

    • drilling;
    • hammer drilling;
    • chiselling.

    Drilling

    The mode switch is installed opposite the designation "drill". To carry out drilling work, use the equipment in the SDS shanks: a removable cam chuck or drill for a perforator. This mode is necessary for the formation of holes in wood, metal and other materials.

    Hammer drilling

    The switch is installed opposite the designation "hammer drill". This mode is designed for drilling holes in concrete, brick, reinforced concrete structures and other building elements. The cutting tool performs both rotational and translational movements. When drilling reinforced concrete structures, the likelihood of a collision with the reinforcement should be taken into account, this is dangerous for both the tool and the person. In this mode, drill bits are used. drills with special carbide taps.

    Slotting

    The switch is installed opposite the designation "hammer", in this mode the working tool does not rotate. They are used for punching the strob, the destruction of building structures, during jack-off operations. It is important to hold the punch firmly and confidently.. For chiselling use a special tool. chisels, peaks, blades.

    Reverse

    The reverse rotation mode reverses the direction of movement of the drill or drill. In budget models of rotary hammers, electric reverse is used. the motor armature rotates in the opposite direction. Disadvantage: more intensive wear of the brushes and braking of the armature. In professional devices, a more complex mechanism is used. the gearbox, in which the direction is switched mechanically using gears. This method is more reliable, but models of rotary hammers with mechanical reverse switching have a higher cost.

    The reverse function will help if the drill is stuck in a deep hole. The inclusion of "reverse" will easily free the drill.

    Other modes

    In some models of rotary hammers there are additional operating modes. For example, turning a chisel. is designed for effective chiselling. In this mode, the bit is rotated a certain degree after each stroke.

    How to switch and adjust the punch modes

    Switching the modes of the punch must be performed only after a complete stop of the working mechanism of the punch. In this case, you do not need to disconnect the tool from the network. You must make sure that the mode switch is clearly locked in position.

    Instrument Safe Use Guidelines

    To ensure safe working conditions and efficient use of the tool when working with a hammer drill, a number of rules should be observed:

    • be sure to use personal protective equipment for eyes, ears, arms and legs;
    • inspect the tool before each start of work;
    • when drilling long holes, it is necessary to start with short drills and perform drilling gradually;
    • long continuous operation leads to overheating of the gearbox and the armature winding. In this case, the hammer must be allowed to cool. Permissible idle and load periods are indicated in the instrument certificate or in the operating manual;

    Empirically, the heating temperature of the gearbox and motor can be determined by the degree of heating of the perforator body. The case should not be clearly hot, it should not emit a characteristic smell of burnt insulating material.

  4. observe the lubrication regime of the drill shanks. This should be done with lithol or solid oil every 150–200 drilling operations performed. Some sources recommend lubricating the shanks of the drills with each installation of the drill in the cartridge;
  5. Perform tool maintenance on time. The scope of maintenance work and its frequency are indicated in the passport of the drill;
  6. if high hardness materials are processed, it is necessary to use liquid cooling of the hole;
  7. during intensive work, periodically cool the drill. When overheated, the metal of the working tool (drill) irrevocably changes its mechanical properties (hardness, elasticity). If the drill is not cooled in a timely manner, it will become unsuitable for further work. There is no rationing for the operating time of the drill. It depends on the force applied to the hammer, the material being drilled, the intensity of drilling, etc. It is extremely dangerous to determine the temperature of heating the drill by hand. It is better to pay attention to the heat emanating from the punch body. Overheated boers often change color to darker, sometimes with a blue tint.
  8. For long-term drilling of particularly hard materials, in order to avoid overheating of the drill, a forced liquid cooling system should be used. Such a system is implemented by supplying a cooling emulsion or ordinary water to the drilling zone. For this, thin tubes or special water couplings are used.

    In order not to complicate the work, it is enough to cool the drill in a prepared container with water at regular intervals. These intervals are established empirically with respect to the temperature of the drill. It is important not to overheat the drill. Do not bring it to a state in which it changes color.

    When can the lights blink?

    If the puncher is equipped with light bulbs, their signal may indicate a breakdown or malfunction of any unit or mechanism. If the red light blinks on the punch, refer to the instruction manual of the device.

    How to insert and pull out a drill or drill

    Hammer models can be equipped with three types of cartridges:

    The vast majority of rotary hammers are equipped with an SDS chuck, so the drill installation operation is examined using this chuck as an example.

    Drill installation

    The SDS chuck is a keyless chuck. A drill (drill) with an appropriate shank is installed in such a chuck in three actions:

    1. Pull chuck down.
    2. Insert the cutting tool into the socket.
    3. Release the cartridge clutch.

    The SDS mechanism is reliable, prevents the drill from falling out and saves time on changing drills. It is used for small and medium power rotary hammers for industrial and domestic use.

    To work with drills with a conventional cylindrical shank, you must have a special clamping cam chuck with a SDS shank. Such a cartridge adapter allows you to work with a hammer drill in the electric drill mode with standard drills. However, one can find a drill with SDS shanks on sale.

    Drill removal

    To remove a drill or drill from an SDS cartridge, you must:

    1. Wait until the cartridge stops turning completely.
    2. Lock the lower sleeve of the cartridge by hand.
    3. Unscrew or tighten the upper sleeve with the other hand.
    4. Get a drill or drill.

    In rotary hammers with a single-barrel version of the cartridge, the drill is removed with one hand. In such models, the shaft auto-lock mechanism is used.

    Hammer drill bits

    Nozzles for a perforator are distinguished by their purpose and method of attachment to the cartridge.

    According to the purpose, the nozzles are divided into a tool for:

    • drilling (drill);
    • drilling (drills, crowns);
    • chiselling (chisels, peaks).

    Shank Type

    The main criterion for choosing a snap is the type of its shank. The type that is suitable for the chosen model of the hammer drill is indicated in its instructions.

    Today, the most common are SDS-plus and SDS-max shanks.

    There are adapters from the size of SDS-max to SDS-plus, but not vice versa. The cutting tool is designed for a specific engine power, the use of large drills in a low-power perforator is not allowed.

    Table: types of shanks for rotary hammers

    Auger drills

    In the performance of auger drills, the angle of inclination of the working groove plays a role. Such drills are used for the manufacture of holes of great depth, they carry out effective dust extraction and are designed for intensive work. The greater the angle of inclination of the groove, the greater the drilling speed and productivity. The use of drills with a centering spike is effective, they more evenly hold the direction of drilling and reduce the load on the hands and tool.

    Chisels

    There are three types of punch chisels:

    This difference is determined by the type of work performed. Plaster is destroyed with an ordinary chisel, the tile is dismantled, etc. They will be chipped with a chisel, make holes in the concrete elements of building structures. A channel chisel does the work of forming straight even channels in concrete surfaces. This type of work occurs during the installation of electrical networks or water supply.

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    Drill bits

    Such a tooling element, like a drill bit, is indispensable for the installation of electrical, hydraulic and thermal communications. The crown allows you to drill large diameter holes in the walls for mounting pipes or cables.

    Crowns make niches in the walls for mounting sockets, switches and junction boxes.

    Mixer nozzle

    Also, a perforator can be used as a mixer for the preparation of building mixtures. For this you need a mixer nozzle.

    Self sharpening auger

    When operating a carbide tipped drill (drill), it wears out from impacts and friction. At the same time, the soldering does not have time to develop its resource before the drill breaks. This is especially noticeable on a large diameter tool. This leads to lower productivity and unnecessary costs for consumables. Therefore, sharpening the drill on its own makes sense. To do this, use a grinding machine (emery).

    When sharpening the drill yourself, it is important to maintain the original angles made at the factory. Their values: 30 degrees. the front face, 60 degrees. the back. For greater sharpening accuracy, a fixture is made from a corner that fixes the drill in the desired position when sharpening it.

    Video: sharpening a drill

    Can a pipe be driven into the ground with a hammer drill?

    Speaking in the language of the rules, the unequivocal answer is "No." The tool must be used according to the instructions and strictly for its intended purpose. However, in practice, craftsmen have successfully used a perforator for the manufacture of Abyssinian wells, clogging pillars and pipes.

    Remember that improper use of the hammer drill can be dangerous. The tool can easily break, and under warranty you will not be replaced.

    Before you take up the punch, to hammer the pipe into the ground, you should understand the process of energy distribution over the surface upon impact. The main thing is that the impact energy is uniformly applied to the end of the pipe.

    The pipe with the help of a perforator is clogged with a homemade nozzle or drill bit. The diameter of the crown should be larger than the diameter of the pipe, the working tool should evenly fit to the entire surface of the cut.

    A rotary hammer is one of the most powerful power tools that you can really hold in your hands. This power can be used both for destruction and for creation. In order for the work to go quickly and the result to be of high quality, it is very important to follow the safety rules when working with a rotary hammer. If you take care of the tool in a timely manner and comply with the manufacturer’s requirements, the punch will last a long time.

    Correct installation of the drill in the drill chuck

    Before you figure out how to properly install the drill in the punch, it is advisable to figure out how to insert the drill into the drill. An element of its design, in which the drill shank is fixed, is a chuck. On most models of modern drills, cam-type cartridges are installed, consisting of:

    • cylindrical body;
    • rings or sleeves that rotate around the outer surface of the housing;
    • cams installed in the inside of the housing.

    When the sleeve rotates clockwise, the cams simultaneously approach each other, thereby reliably clamping the shank of the drill being installed. Accordingly, the question of how to remove the drill from the drill is not difficult to solve: it is enough to start turning the sleeve counterclockwise. In this case, the cams will begin to diverge, which will make it easy to remove the drill from the drill. It should be borne in mind that before installing the drill, the cams should be opened with a margin, in which case the tool can be easily inserted.

    The convenience of using cam type chucks lies not only in the efficiency and high reliability of the tool installation, but also in the fact that drills of almost any diameter can be inserted into them. When using such cartridges, difficulties with how to change a drill in a drill, as a rule, do not arise. A correctly inserted tool holds these chucks securely and allows you to drill an exact hole.

    Cam chucks are used in both industrial and household drilling tools. Clamping devices for household drills are available for two ranges of drill diameters: from 0.8 to 10 and from 1.5 to 13 mm.

    The design of cam chucks can include two different methods of clamping a tool: key and quick-clamping.

    In the first case, the sleeve is actuated using a special key, on the conical working part of which there are teeth. The key, in order to actuate the clamping mechanism, must be inserted into the holes on the side of the cartridge case and rotated. There may even be three such holes in individual models. Accordingly, in order to loosen or pinch the cams, the key must be inserted into each of them and begin to rotate counterclockwise or along it.

    After loosening the cams with the key, it is necessary to turn the cartridge itself counterclockwise, which will increase the distance between the cams to the desired value. The inserted tool is fixed in the reverse order: first the chuck itself is clamped (when it is rotated clockwise), and then the sockets are clamped using the key.

    It is much simpler and faster to pull out and install drills when using a quick-clamping chuck. In it, the sleeve is actuated by rotating it manually. To limit the force of the cams, they are often equipped with locking elements.

    Before inserting the drill, first make sure that the drill is in working condition and de-energize it. Only then can you start installing the drill.

    Installation of a working tool on a rotary hammer

    As mentioned above, the hammer must be checked for operability before installing the drill. To perform such a check, the operating mode of the punch is set to drill without a fight. If, after pressing the start button of the device, you hear and feel that its engine is running smoothly and without jolts, it means that the hammer can be used for its intended purpose, after inserting a drill or a drill into it.

    Before inserting the drill into the perforator, it is necessary to treat the shank of the working tool with a special lubricant that will protect it from corrosion. The procedure for installing the drill in the punch is as follows.

    1. The rotary hammer is mounted on the back of the floor or other hard surface.
    2. The movable part of the clamping device is pulled back.
    3. The tool is inserted into the punch until it stops. In this case, the drill or drill, which must be inserted into the perforator, must be held vertically. If you neglect this requirement, you may encounter the fact that the tool will fly out or even break, and this can also lead to failure of the puncher itself.

    Given the fact that clamping chucks on modern rotary hammers are distinguished by a rather simple principle of operation, questions as to how to get a drill out of a rotary hammer, as a rule, do not arise.

    After removing the used tool from the punch to replace it with another, it is advisable to immediately clean its shank from grease and building dust. At the same time, the shank of the drill that you are going to insert must also be cleaned and pre-lubricated. Replaced in this way the tool will not harm the clamping mechanism of the punch and will last much longer.

    Using a punch, you can not only get a drilled structural element, but also perform processing using a special chisel. You can also install as a working body of such a device mixer.

    Home masters often also have questions about how to insert a drill into a screwdriver or how to change a chuck on a hammer drill. To solve the first question is quite simple, since the design of the screwdriver uses cartridges of the same design as on drills and perforators. But the question of how to properly replace the cartridge on a punch, should be approached with skill: it is not easy to carry out such a procedure without certain knowledge and skills.

    Some tips for using a drilling tool

    In order not to face the fact that a flying tool or concrete chips will harm your health, drilling work must be carried out in compliance with all safety measures. Safety glasses, gloves, earplugs or ear muffs should be used as a means of ensuring this safety. Naturally, all work must be carried out in special clothing, in which there should be no hanging elements that can be wound on the drill.

    In order to avoid overheating of the electric tool used for drilling, it is necessary to give it a rest on a regular basis. It is very important to insert the drill correctly (this must be done until the tool stops).

    If the drill stuck in the wall during drilling, it should be removed without removing the tool from its surface. To do this, you need to remove the drill from the punch and insert another, with which you need to begin to destroy the wall around the drill stuck in it.

    If the drill cannot be removed from the drill or punch, it must be clamped in a vice, and then with a hammer, using a wooden gasket, tap on the cams of the clamping mechanism. Oil can help in this matter, a few drops of which are poured into a key type cartridge.