The electric screwdriver sparks inside during operation

Prevention

To prevent or at least minimize the risk of all these problems, follow a few simple rules:

Bosch Smoking, Sparking Motor / Repair PSB / PSR Li-2

  • after work, wipe the tool and electric screwdriver attachments that you used with a damp cloth. This will prevent dust from getting inside, on the collector contacts;
  • If the resource of an electric screwdriver is not enough for your tasks, do not lean on it or press it into the surface. Purchase a tool with the appropriate power and number of revolutions;
  • use original spare parts to replace broken ones. This will protect the tool from premature global breakdown.

Preventing a problem is always easier than looking for a solution later.

A common reason that owners call “Successful Service Technique” when contacting service centers is that an electric screwdriver from Bosch (Bosch), Metabo or other production sparks and smells during operation. Often these phenomena are not signs of any malfunctions, but in any case, timely consultation with the master and a preventive inspection will help to avoid serious breakdowns and save a significant amount on repairs or purchasing a new tool.

Collector contamination

The mechanics of collector contacts contamination are as follows: the electric motor overheats, carbon deposits settle on the collector, which creates additional friction. As a result, the engine overheats again, even when operating at low speeds, the amount of carbon deposits increases, friction increases. and so on until the engine burns out at all.

The solution to the problem is obvious and consists in cleaning up contacts. Do it with the finest (zero) sandpaper:

  • Remove the manifold with an anchor.
  • Lightly sandpaper the contacts.
  • Reinsert the module.

It is best to clean with a lathe to avoid disturbing the geometry of the part. But in practice, you can get by with manual work.

Electric screwdriver sparks when stopped

If the electric screwdriver sparks with rare and small sparks, this does not necessarily indicate a malfunction. A newly purchased tool can behave this way in the first 10-15 minutes of work, while the brushes are rubbing in. If enough time has passed, and the sparking does not stop, it is better to return the electric screwdriver.

But what to do if the problem manifests itself after years of operation of the power tool, and the warranty period has long expired?

Anchor closure

If you cleaned the collector contacts, checked the condition and tightness of the brushes, and the arcing of the electric motor continues, most likely the problem is in the armature winding.

A special device for creating an alternating magnetic field helps to detect it. If you place an anchor in it, it will start to rattle, since induced currents appear in it.

If a problem is found in this module, rewinding the winding or complete replacement of the armature will help.

Whatever the reasons for the appearance of sparks in the power tool. contamination of contacts, a short circuit in the armature or clogged brushes. they cannot be ignored. Otherwise, you can wait for the final failure of the electric screwdriver.

Dust in contacts

With regular work, even at low speeds, the brushes of an electric screwdriver are erased. As a result, graphite dust is formed. It accumulates on the contacts of the electric motor. And since the graphite dust has its own resistance, an uneven distribution of current occurs, sparks appear, a characteristic smell. a complete feeling that the brushes of an electric screwdriver are burning.

If the brushes are installed correctly, they will wear out very slowly and do not lead to such problems. Take apart your instrument and see what happens there. Consider:

  • parts of the mechanism must fit tightly, without backlash;
  • if a replacement was made, a brush of an inappropriate size may have been installed;
  • foreign objects, dust, building chips could get into the grooves.

Gently remove dust from the brushes, from the grooves using a pointed tool. Replace or firmly reinstall all necessary parts to prevent further sparking.

For replacement, buy original parts from the manufacturer. In the end, it will save money and nerves.

Possible reasons

The main reason sparks appear even on a new engine is the mechanical interaction of the collector and brushes. Moving during tool operation from one collector contact to another, the brushes alternately create and break contact with each of them.

To make it easier to understand the principle, remember the situation when you pull out the plug of an electrical appliance from the outlet. When the circuit breaks, a spark is generated between the outlet and the plug. So it is in this case. Slight arcing is normal.

But if the sparks fly in a sheaf, this situation may be due to the following reasons:

  • collector contacts in carbon;
  • graphite dust from the brushes got between the contacts;
  • a short circuit occurred in the armature winding.

Why does an electric screwdriver spark?

Of no small importance is the service life of the tool, on which sparking exceeding the norm is noted. It is completely normal for a new electric screwdriver to generate sparks during operation with any brushed motor. Sparks occur as a result of a permanent break in the connection between the electrically conductive brush and the collector contacts, separated from each other by a technological gap. In this case, slightly increased sparking occurs after grinding in the brushes during the first 10-15 minutes of tool operation.

It is important to find out why the brushes of an electric screwdriver Interskol, Makita, etc., which have worked for many days, months or even years, spark strongly. This can happen for the following reasons:

  • contamination of the collector contact pads with carbon deposits formed when the engine is running under heavy loads. To remove carbon deposits, you will need to carefully clean the collector with the finest emery paper;
  • accumulation of graphite dust in the gaps between the lamellas of the collector, which occurs mainly when the brushes are incorrectly positioned due to backlash. Dust is carefully removed mechanically with a sharp object;
  • if an electric screwdriver sparks inside and smokes at the same time, there is a high probability of an inter-turn short circuit in the armature, which can be accurately identified by a special device that induces an alternating magnetic field. In this case, only rewinding the winding or a complete replacement of the armature (motor) will help.

The reason the electric screwdriver sparks when stopping is that the model has an electric brake. It contributes to an almost instantaneous stop of the shaft, and the appearance of sparks is considered the norm.

You can always make sure that the tool is in good working order, get prompt and inexpensive repairs in the workshops “Successful Technique Service”!

  • 03 November 2017 12:13:57
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Sparking during the operation of machines with a collector motor is permissible, but in small sparks. A mechanical contact occurs between the brushes and the collector, leading to the formation of sparks: at the moment the brush moves along the collector from one contact to another, an open circuit occurs, thus a spark is obtained.

On a new instrument, the brushes are usually rubbed in for 10-15 minutes. If strong sparking occurs, it is necessary to find out the reason: 1. Contamination of the contacts, as a result of overheating of the motor. It is necessary to remove carbon deposits with zero abrasive paper, as it creates additional resistance and this leads to a strong spark. 2. Graphite dust between the collector contacts. It is necessary to remove dust and replace the brushes, which have already worn out in the course of work. 3. A large arc is the formation of short-circuited turns at the armature. It is necessary to rewind the armature winding, or replace with a new armature. Take care and keep your instrument clean.

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Sparking carbon brushes ~ Cleaning the armatures commutator bar on a circular saw

The device has broken down. what actions?

There are two ways to solve the problem. The first is to try to fix the breakdown on your own, having studied the information on the Internet, the second is to hand it over for repairs to any one of the 21 Umedia services. It is not the first time that we have eliminated the malfunction “sparks inside and smokes an electric screwdriver” and we want to share our experience with you, to guide you at the cost and terms indicated in the table below.

The causes of the defect sparks inside and smokes

Based on the experience of our service engineers, we can distinguish the following reasons:

  • Untimely prophylaxis and cleaning of the device
  • Lack of protection against power outages
  • Replacing consumable accessories
  • Not carefully studying the user manual or ignoring the manufacturer’s advice.
  • Not neat use

Bring your equipment to our service centers or call the masters at home and We will repair and give a guarantee. After the faulty device will work 100 percent (at full). Addresses of Yamedia services in all districts of St. Petersburg.

We will eliminate the defect for 1200 rubles excluding details

Below you can familiarize yourself with the latest repairs of our clients who have addressed the problem “sparks inside and smokes from an electric screwdriver.” The final price is presented, taking into account the replaced spare parts and diagnostics performed. All repairs are guaranteed. There are daily discounts for the service.

Click on the repair you need to find out more.

Electrical Life DefectRead
Hitachi DS 120VF3 Sparks-smokes details
Repair time: 1 day. (Issued on 2019-12-31)
Performed work: Replacing the motor, repressing the gear. Repair of the button of inclusion of speed.
Spare parts cost: 1000 rubles.
Service address: Prospekt Nauki, 21k1 (shopping center Torgovy dvor Archimedes, 1st floor, room 7A.)
Craftsman: Igor Zadirienko
Warranty period: 1 month

Average term: 10.8 days | Average price of work: 2250 rubles. | Average price of spare parts: 1250 rubles.

the electric screwdriver sparks inside and smokes

First of all, when the electric screwdriver smokes or smells of burning, you need to turn it off. The reason for this is the work of the electric screwdriver with a large overload. If it was quickly turned off, it may not have completely burned out and can be restored. the electric screwdriver must be disassembled, remove the electric motor and carefully inspect it. In the case of a pungent burning smell, it is most likely that the electric screwdriver has completely burned out. If you smell just a little, the motor windings should be carefully inspected. You also need to inspect the engine manifold. If the insulation of the winding has only darkened or the insulation breakdown is spotty, then the electric motor can still be saved. To do this, you can impregnate a point violation of the insulation with nail polish. When the winding darkens, but there is no insulation violation, you can turn on the electric screwdriver for a short time without load. It is quite possible that he will continue to work, but you need to be careful with him. Better to check the winding with a multimeter. than once I had to reanimate electric motors in this way.! [] 1

If your screwdriver smokes and a characteristic smell appears, then:

  • Unplug the tool. It should not work at this moment and should not be connected to the network.
  • Make sure that the smoke is not coming from the workpiece that you are working with the screwdriver. For example, if you use the drill function and work at high speed, the wood may become hot and burn.
  • If possible, disassemble the disconnected screwdriver, getting to its electrical components (to the engine, in particular).
  • Look carefully at everything related to the winding. In case of local burning, if it is barely noticeable and has a scanty area, try to restore the varnished layer by saturating the problem area with varnish. Easier if it is on the stator. But the burning out of the varnish threatens to breakdown.
  • Remove dust and sawdust carefully.
  • If the breakdown is eliminated in this way and there is no burning smell when you turn it on again, then continue to use the screwdriver with a reduced load, lubricating it. The load scorches the varnish. Low voltage can make it work.
  • In the event of other violations (anchor, brushes, bearings, wire or the impossibility of diagnostics), appropriate repairs are required, which can be done by an experienced, if not qualified, person. If repair is not possible, choose a more powerful screwdriver.

Well, what to do. we will repair it, if you did not go to the service but came to us for advice. It is clear that for this you need to know at least the basics of electrical engineering (terms and concepts)

Cordless shura (screwdrivers) in general can rarely smoke, compared to a power tool powered from a 230 Volt network. This is due to both low voltage and lower power (speed) But for both, the main sources of smoke, I judge from my own experience, can be.

eaten brushes (you can see a lot of sparks in the ventilation holes);

turn-to-turn closure of the stator winding (smoke also comes from the ventilation holes, but the collector does not spark much);

malfunction of the on / off button (the button heats up, smells, a crackling sound is heard when turned on);

extremely unfavorable operating conditions. dirt, dust, foreign particles in the engine (smoke, noise, ventilation holes are clogged. This often happens during large-scale repairs. strobing, etc.)

Identify the source of smoke and odor and proceed with the repair.

  • The simplest thing is if the brushes are burnt out. We just change them to new ones, better original ones. It happens that the brushes wear out to the point that copper contact wire embedded in graphite begins to shuffle along the collector. sparks like from a sparkler, the smell of burning and smoke. New brushes will spark slightly more than usual at first until they reach a radius equal to the collector diameter.
  • If the winding is broken, then little will help here except rewinding, even filling with varnish. Better to change right away. Yes, and body movements for possible resuscitation of a closed engine are not worth it, a new dvigun even for Makita and Bosch costs no more than 1,000 rubles. And Interskolovskie or Prorabovskie for 300-400 rubles.
  • Very often, heating, an unpleasant smell and even smoke comes from the plastic of the power button. It has contacts, and from frequent on / off. they of course spark and heat up, heat is transferred to the plastic case, which both smells and smokes. My advice in this case is to change the entire button (to clean up and bend the contacts. what a dead poultice)
  • We’ll have to clean and rinse. Just do not follow the advice of clever people who say that you can rinse the cordless electric screwdriver by lowering the collector assembly into white spirit and working it for a few minutes. this is nonsense. For cleaning, you will need to disassemble the shura. This is usually 6-8 bolts on one side of the body. Some bolts may be under the plugs, be careful. Unsolder and remove the motor. Here it is separately and will need to be rinsed. Clean the furrows between the collector sipes. Dry thoroughly! After drying, check it for an interturn short circuit (short circuit) while it is not connected to the switch (if you do this right in the shura, you can easily burn the operating transistor of the switch. At least one wire from the engine must be unsoldered!). The engine is checked by simply connecting an electric screwdriver to a native battery. If the engine works and does not smoke, then everything is in order with it. If it smokes or even smells stronger than usual, change the engine, it is already, if not closed, then scorched. A “roasted” engine very quickly kills the battery, which usually costs five times more than the same engine.

After cleaning the housing, lubricate the bearings and assemble the electric screwdriver.

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First of all, when the electric screwdriver smokes or smells of burning, you need to turn it off. The reason for this is the work of the electric screwdriver with a large overload. If it was quickly turned off, it may not have completely burned out and can be restored. the electric screwdriver must be disassembled, remove the electric motor and carefully inspect it. In the case of a pungent burning smell, it is most likely that the electric screwdriver has completely burned out. If you smell just a little, the motor windings should be carefully inspected. You also need to inspect the engine manifold. If the insulation of the winding has only darkened or the insulation breakdown is spotty, then the electric motor can still be saved. To do this, you can impregnate a point violation of the insulation with nail polish. When the winding darkens, but there is no insulation violation, you can turn on the electric screwdriver for a short time without load. It is quite possible that he will continue to work, but you need to be careful with him. Better to check the winding with a multimeter. than once I had to reanimate electric motors in this way.! [] 1

If your screwdriver smokes and a characteristic smell appears, then:

  • Unplug the tool. It should not work at this moment and should not be connected to the network.
  • Make sure that the smoke is not coming from the workpiece that you are working with the screwdriver. For example, if you use the drill function and work at high speed, the wood may become hot and burn.
  • If possible, disassemble the disconnected screwdriver, getting to its electrical components (to the engine, in particular).
  • Look carefully at everything related to the winding. In case of local burning, if it is barely noticeable and has a scanty area, try to restore the varnished layer by saturating the problem area with varnish. Easier if it is on the stator. But the burning out of the varnish threatens to breakdown.
  • Remove dust and sawdust carefully.
  • If the breakdown is eliminated in this way and there is no burning smell when you turn it on again, then continue to use the screwdriver with a reduced load, lubricating it. The load scorches the varnish. Low voltage can make it work.
  • In the event of other violations (anchor, brushes, bearings, wire or the impossibility of diagnostics), appropriate repairs are required, which can be done by an experienced, if not qualified, person. If repair is not possible, choose a more powerful screwdriver.

Well, what to do. we will repair it, if you did not go to the service but came to us for advice. It is clear that for this you need to know at least the basics of electrical engineering (terms and concepts)

Cordless shura (screwdrivers) in general can rarely smoke, compared to a power tool powered from a 230 Volt network. This is due to both low voltage and lower power (speed) But for both, the main sources of smoke, I judge from my own experience, can be.

eaten brushes (you can see a lot of sparks in the ventilation holes);

turn-to-turn closure of the stator winding (smoke also comes from the ventilation holes, but the collector does not spark much);

malfunction of the on / off button (the button heats up, smells, a crackling sound is heard when turned on);

extremely unfavorable operating conditions. dirt, dust, foreign particles in the engine (smoke, noise, ventilation holes are clogged. This often happens during large-scale repairs. strobing, etc.)

Identify the source of smoke and odor and proceed with the repair.

  • The simplest thing is if the brushes are burnt out. We just change them to new ones, better original ones. It happens that the brushes wear out to the point that copper contact wire embedded in graphite begins to shuffle along the collector. sparks like from a sparkler, the smell of burning and smoke. New brushes will spark slightly more than usual at first until they reach a radius equal to the collector diameter.
  • If the winding is broken, then little will help here except rewinding, even filling with varnish. Better to change right away. Yes, and body movements for possible resuscitation of a closed engine are not worth it, a new dvigun even for Makita and Bosch costs no more than 1,000 rubles. And Interskolovskie or Prorabovskie for 300-400 rubles.
  • Very often, heating, an unpleasant smell and even smoke comes from the plastic of the power button. It has contacts, and from frequent on / off. they of course spark and heat up, heat is transferred to the plastic case, which both smells and smokes. My advice in this case is to change the entire button (to clean up and bend the contacts. what a dead poultice)
  • We’ll have to clean and rinse. Just do not follow the advice of clever people who say that you can rinse the cordless electric screwdriver by lowering the collector assembly into white spirit and working it for a few minutes. this is nonsense. For cleaning, you will need to disassemble the shura. This is usually 6-8 bolts on one side of the body. Some bolts may be under the plugs, be careful. Unsolder and remove the motor. Here it is separately and will need to be rinsed. Clean the furrows between the collector sipes. Dry thoroughly! After drying, check it for an interturn short circuit (short circuit) while it is not connected to the switch (if you do this right in the shura, you can easily burn the operating transistor of the switch. At least one wire from the engine must be unsoldered!). The engine is checked by simply connecting an electric screwdriver to a native battery. If the engine works and does not smoke, then everything is in order with it. If it smokes or even smells stronger than usual, change the engine, it is already, if not closed, then scorched. A “roasted” engine very quickly kills the battery, which usually costs five times more than the same engine.

After cleaning the housing, lubricate the bearings and assemble the electric screwdriver.

Service cost by manufacturer

This defect occurs with the following manufacturers:

Where to repair in St. Petersburg?

Location: Front entrance from Valor. Nearest addresses. Prospectuses: Leninsky, Kuznetsova, Heroes, Peterhof highway; Streets: Valor, Marshal Kazakov, Marshal Zakharov.

Location: On the 2nd floor of the shopping mall “Yugo-Zapad” near the Media-Markt. Nearest addresses. Metro Kirovsky Zavod, Avtovo; Leninsky Avenue, Stachek; Marshal Kazakov street, Marshal Zakharov street, Valor

Location: on the 2nd floor. FIX-PRICE neighbors. Nearest addresses. Metro: Bukharestskaya, Mezhdunarodnaya; Prospectuses: Glory, Vitebsky; Addresses: Sofiyskaya, Salova, Bela Kuna, Fucik, Budapest, Paris, Turku

Location: In TC Cosmos, 2nd floor. Nearest addresses. Prospectuses: Kolomyazhsky, Bogatyrsky, Testers, Korolev; Streets: Parashutnaya, Gakkelevskaya, Staroderevenskaya, Planernaya, Sharova, Dolgoozernaya

Metro station: Komendantsky prospect

Location: On the 1st floor in the Plovdiv shopping center, near the ticket office. Nearest addresses. Metro: Park Pobedy, Mezhdunarodnaya, Moskovskaya; Prospectuses: Vitebsky, Cosmonauts; Streets: Tipanova, Titova, Basseinaya

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Location: Entrance from the parking lot. 6 steps up. Nearest addresses. Metro: Kupchino, Zvezdnaya; Avenues: Vitebsky, Slavy, Danube; Addresses: Sofiyskaya, Bukharestskaya, Malaya Balkanskaya, Oleko Dundicha, Budapestskaya, Kupchinskaya

Location: How to get through? Shop “Magnet”, checkout area, signboard YUmedia Serivis. Nearest addresses. Metro: Ploshchad Muzhestva, Vyborgskaya, Chornaya Rechka; Avenues: Lesnoy, 1st Murinsky, Polyustrovsky, Bolshoi Sampsonievsky; Streets: Kantemirovskaya, Kharchenko, Litovskaya, Vyborgskaya

Location: In T.Ts. Trade yard Archimedes, 1st floor, room 7A. Nearest addresses. Metro: Polytechnicheskaya, Ploshchad Muzhestva; Avenues: Science, Civil Invictus, North; Streets: Vernost, Butlerova, Gzhatskaya, Favorsky, Karpinsky

Location: Two end entrances to the “Magnet Cosmetic” store. Nearest addresses. Avenues: Novgorodsky, Vitebsky, Moskovsky Streets: Shkolnaya, Pushkinskaya, Okulovskaya.

Location: On the 2nd floor of the Term shopping mall. Nearest addresses. Metro: Dybenko, Bolshevikov; Avenues: Dalnevostochny, Podvoisky, Iskrovsky, Tovarishchesky; Streets: Dybenko, Antonova Ovseenko, Oktyabrskaya embankment, Podvoisky

Location: On the 2nd floor in the shopping center Rzhevka room.07b. Nearest addresses. Prospectuses: Irinovsky, Kosygina, Industrialny, Mentors; Streets: Communes, Leaders, Enthusiasts, Shock Workers

Location: On the ground floor, section 015. Nearest addresses. Avenues: Bogatyrsky, Ispytatel, Sizova, Streets: Tupolevskaya, Gakkelevskaya, Baikonurskaya, Staroderevenskaya

Location: Entrance to the basement, near Magnet. Nearest addresses. Prospectuses: Severny, Prosveshcheniya, Lunacharsky; Streets: Kirishskaya, Toksovskaya, Luzhskaya, Ushinsky, Kirishskaya

Metro station: Grazhdansky prospect

Location: On the 2nd floor in the Morskoy shopping center. Nearest addresses. Metro: Vasileostrovskaya, Primorskaya; Avenues: Morskaya embankment, Vasileostrovsky; Streets: Shipbuilders, Cash, Uralskaya

Location: Entrance from Saperny lane. Nearest addresses. Prospectuses: Liteiny, Suvorovsky, Nevsky, Ligovsky; Streets: Zhukovsky, Nekrasov, Vosstaniya, Radishchev, Mayakovsky

Location: In TC Paktor (Bada Boom). 5 minutes from the metro Ozerki. Siqueiros, Yesenin, Vyborg highway, Toreza Avenue

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Repair of such a malfunction is carried out by removing dust with any sharpened equipment and changing brushes to more suitable in size.

electric, screwdriver, sparks, operation

Sparking Brushes On an electric screwdriver. CTLN.RU

What you need is your drill sparks on your brushes and you don’t know what to do under the circumstances. This article will tell you why this is happening, whether it is necessary to fix it, if necessary, then how.

Immediately it should be noted that the presence of the indicated sparking in due time of work is a completely permissible phenomenon. True, only if the sparks are small and there are not so many of them. When they pour directly, this may indicate a malfunction.

On the contrary, your drill is already out of warranty, that is, the option to try to fix what remains to be done by our client himself.

But first, let’s describe the prerequisites for this phenomenon.

Sparks, including on a serviceable engine, arise due to mechanical action between the brushes and the collector. The brush, moving along the collector from its 1st contact to another, alternately forms and breaks a connection with all of them. Next, remember what happens if you pull out any working electrical appliance from the outlet. usually at that moment a spark jumps between the plug and the outlet. If brushing is the same.

Therefore, a small sparking even on a working electric motor is permissible, since a connection and a gap appear here all the time.

Now let’s move on to strong arcing. It appears in the main for the following reasons:

  • contamination of collector contacts with carbon deposits
  • ingress of graphite dust between the collector contacts
  • turn-to-turn circuit in the armature winding

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1) Carbon deposits come out when the motor overheats. The presence of carbon deposits leads to even more friction, which leads to even more rapid overheating and even more carbon formation. Which leads to a breakdown in a short time.

Should an electric screwdriver spark

Greetings! People who have experience in repairing screwdrivers?

Mine has long begun to drop the speed on the power train with a slightest load, and yesterday I generally tightened a couple of screws and started to smoke.

I disassembled it today, cleaned everything, removed the brush assembly, washed everything inside. There are still plenty of brushes. I connected a purely motor, and the brushes sparkle strongly and start to smoke.

Tell me if it can be repaired why it can spark so much?

well, it’s understandable I would like to get by with a little blood. all the more, it is not a fact that the transmissions are in order. it has been torn apart in a crunch for a long time.

What is faulty in the gearbox can be determined only after parsing and defiktovka. In full, even the gearbox is working, but simply the shift lock has worked out, so the speeds flew out. The same crunch can be when the speeds are not switched on. But replacing the engines is a little blood Because to look in it, the malfunction is such a matnya, the ovchilka of manufacture is not worth shorter. If a Ketai motor for 12 volts costs in the region of 500-600 rubles. Well, let’s boshshsh, about a little more than a ruble. It was necessary to measure the resistance on the collector when I disassembled the engine. Was this the point to disassemble ?! In general, that the engine should also be judged only after measurements

So, your drill sparks on your brushes and you don’t know what to do in such a situation. This article will tell you why this is happening, whether it needs to be fixed, and if necessary, how.

It should be noted right away that the presence of this sparking during operation is a perfectly acceptable phenomenon. This is true only if the sparks are small and there are not so many of them. If they pour directly, then this may indicate a malfunction.

If your drill is already out of warranty, then you can try to fix everything yourself.

But first, let’s describe the reasons for this phenomenon.

Collector contamination

The mechanics of collector contacts contamination are as follows: the electric motor overheats, carbon deposits settle on the collector, which creates additional friction. As a result, the engine overheats again, even when operating at low speeds, the amount of carbon deposits increases, friction increases. and so on until the engine burns out at all.

The solution to the problem is obvious and consists in cleaning up contacts. Do it with the finest (zero) sandpaper:

  • Remove the manifold with an anchor.
  • Lightly sandpaper the contacts.
  • Reinsert the module.

It is best to clean with a lathe to avoid disturbing the geometry of the part. But in practice, you can get by with manual work.

What to do if the electric screwdriver sparks and smells? The brushes of the electric screwdriver Bosch (Bosch), Metabo, Interskol, Makita, etc.

A common reason that owners call “Successful Service Technique” when contacting service centers is that an electric screwdriver from Bosch (Bosch), Metabo or other production sparks and smells during operation. Often these phenomena are not signs of any malfunctions, but in any case, timely consultation with the master and a preventive inspection will help to avoid serious breakdowns and save a significant amount on repairs or purchasing a new tool.

Your Drill Spews Sparks? You Can Fix That.