How to Reduce Dust From An Angle Grinder

How to cut concrete angle grinder without dust. The advice of the masters

During repair or construction, it is sometimes required to carry out concrete work: cut an opening under a window, a niche, and ditch walls for wiring. Masters know how many small particles are formed. Cleaning after such events is a very laborious task. We suggest figuring out whether cutting concrete without dust is possible and how to organize this process.

Concrete is a durable material, so working with it is quite difficult. To perform cutting, most often use angle grinder (angle grinder). This tool is better known in everyday life as an “angle grinder.”

How to Reduce Dust From An Angle Grinder

A diamond wheel is used as a nozzle. Depending on the design features, they are divided into several varieties:

  • Segmented
  • Solid;
  • Combined (turbocharged).

The first option is a solid base with a segmented edge. Such a circle is low cost, but not too suitable for working with durable materials. It must also be taken into account that it is used only for dry cutting. The solid disk has a continuous diamond edge, so that no chips are formed during operation. Such a nozzle heats up quickly, so it must be cooled with a continuous water stream.

Combined or turbo-diamond disc is universal. It withstands maximum load and is suitable even for cutting reinforced concrete.

Before buying the nozzle of the right type, you need to figure out what material you have to work with. Reinforced concrete is reinforced with metal rods that the cutter may stumble upon in the process. Therefore, if it is supposed to deepen more than 10 cm, use should be made of high-strength discs, i.E. Turbocharged ones. Fresh concrete is more abrasive, with time the material hardens, its strength increases. This factor should also be considered when choosing a circle for cutting.

The disk segments are attached to the canvas with silver solder or by laser welding. The first option is more suitable for wet, the second is used only for dry cutting. When choosing a suitable diamond wheel, attention should also be paid to its diameter, which should be suitable for angle grinders. An important criterion is also the speed of the disk. It is better if it is higher than the maximum possible indicator stated in the technical specifications of “angle grinder”. This will ensure optimum operation.

Wet Concrete Cutting Technology

Using water allows you to cut concrete “angle grinder” without dust and overheating of the tool. The technology allows you to solve several problems at once:

  • Increase the life of the diamond nozzle,
  • Avoid dust
  • Increase the speed of work.

One way to ensure that the water supply is continuous is to secure the hose so that fluid enters the disc. If there is no water supply in the working area, an assistant can be involved in the process. He will use a primitive device from a plastic bottle to wet the circle. At the same time, the incision site is wetted with liquid. This must be done carefully so that water is not poured into the tool.

The method is not very applicable in multi-storey buildings, since there is a risk of flooding the neighbors from below.

How to make a casing for a vacuum cleaner with your own hands

The angle grinder with a built-in vacuum cleaner allows to get rid of the “angle grinder” small particles of material formed during the cutting process. But what if there was a need to cut concrete with a conventional tool without additional options? The simplest solution is to purchase a casing for a vacuum cleaner separately or to make a device with your own hands. You can attract an assistant who will collect the particles formed during the cut with a vacuum cleaner.

It is easy to make a convenient nozzle from a simple plastic canister, in which an automobile “frost-free” is often sold. For work, you will need a construction cutter and a container of a suitable size, the neck of which will fit in diameter to the hose of the vacuum cleaner.

The manufacturing sequence is as follows:

  • Mounting holes are cut on both sides so that you can easily change the direction of rotation of the disk.
  • A suitable slot is made under the circle.
  • To attach the cutter, an “angle grinder” cuts another hole.
  • The hose is docked with the neck of the canister and fastened with a transition ring with a clamp.
  • “Angle grinder” is laid in the casing and all elements are connected.
  • The unused hole is covered with a lid.

A good dust collector will turn out from a simple five-liter polyethylene bottle. It is attached using a standard protective casing, and the nozzle of the vacuum cleaner to the neck. This design is suitable for any kind of work, except for chipping.

Last tip: in order to make a cut evenly, marking is first applied. Then along the line are fixed wooden blocks. After this, a shallow incision is made up to 1 cm, the stops are removed and the work continues. Throughout the process, coolant is supplied to the blade of the disc. Perform all manipulations in safety glasses, a respirator and gloves.

Concrete cutting and drilling technology

  • How to cut concrete?
  • How to cut concrete?
  • How to drill concrete?

Concrete cutting is carried out during various construction works, depending on this, the appropriate tool is selected.

When carrying out repairs, it is often necessary to cut concrete, for example, for communications.

Cutting can be done for laying the cable, in order to remove the window opening (for integration with the loggia), if you need to dismantle any part of the concrete structure during the redevelopment of the room. The cutting technology itself is not very complicated, but it requires certain knowledge and skills, as well as physical strength.

How to cut concrete?

At home, for cutting concrete, an angle grinder (angle grinder) with diamond disks is most often used. But, before starting work, it is necessary to determine the quality of the concrete coating, since the choice of tools will depend on this. Old concrete is much harder than recently laid, therefore, Turbo diamond disks are used for cutting it, having a wave casing that perfectly cope not only with this task, but without special problems cutting metal reinforcement, often present in cement screed.

For cutting concrete, it is customary to use diamond blades.

The concrete contains various fillers that give the surface a certain type of strength. So, river sand is considered harder than sand extracted from rock, when cutting quartz and basalt, diamond nozzles can become dull, so you need to stock up on interchangeable ones. If a large screed is present in the concrete screed, for example, gravel, then diamond wheels with a soft bundle of segments are used for cutting, and the angle grinder also reduces the speed. The power of the selected tool is important: the higher it is, the better and stronger the nozzle should be. For high-power angle grinders, a disk with a higher diamond content and a higher bundle of segments is selected, otherwise the blade can become dull quickly.

Diamond blades made by laser welding of segments are considered the most durable and high-performance, they are mainly used for dry cutting. Cutting concrete without dust (wet method) involves the use of discs with soldered segments containing silver solder. When choosing a nozzle for a certain type of work, it is necessary to pay attention to its diameter and the size of the mounting holes, they must correspond to the technical characteristics of the tool, which will be used to cut the concrete coating.

An angle grinder will act as a tool for cutting concrete.

  • Angle grinder or wall saw;
  • Diamond coated discs;
  • Wooden slats (guides);
  • Protective clothing.

Before you begin to work, you must take care of your own safety. Be sure to use a respirator that will prevent dust from entering the lungs, do not forget about special glasses and clothing with protective inserts. The most commonly used is dust-free concrete cutting, in which a stream of water is directed to the blade, which ensures a continuous process, significantly reduces the amount of dust, increases work efficiency, and maintains the sharpness of the blade for a long time. But in some cases, wet cutting is contraindicated, for example, when a large amount of water can damage the tool or there is no water supply nearby.

Dry cutting technology is significantly different from wet cutting. During operation, the blade should not heat up, for this reason it is necessary to allow the tool to rest: the disc is removed from the cut, it is allowed to turn for 1-2 minutes at free speed or the saw is turned off. If it is necessary to perform a deep cut, then the work is carried out in several stages. The first step is to mark with a chalk on the floor a cut line along which wooden guides are installed. This ensures evenness of the cut and smooth movement of the tool.

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First, make a shallow cut of 0.5-1 cm, give the tool a rest, then cut the surface again, etc.

Use a wall saw to make vertical concrete cuts.

The operation is repeated until the desired result is achieved.

If you want to cut a vertical concrete surface, then for this purpose a special wall saw with a diamond blade is used, which has a low noise level and high performance. A special hydraulic line is connected to the tool, which ensures the flow of water to the blade, as well as a vacuum cleaner with a nozzle, which provides dust cleaning. If it is necessary to make an opening in the wall, then the work is performed as follows: first, marking is done with chalk, after which several control holes are drilled in concrete (at the corners), from which the cut is made first horizontally, then vertically.

For drilling holes in concrete, a perforator with a special drill is often used. This tool has its advantages and disadvantages. With its help, you can drill only small holes from 3 to 5 cm in diameter, which is clearly not enough if you need to make a move for the release of ventilation pipes.

Concrete wall drilling pattern.

If it is necessary to drill a deep hole, and reinforcement is present in the concrete surface, then, having stumbled upon such an obstacle, the tool may burn out.

For drilling holes from 5 to 45 cm, a powerful hammer drill with a carbide crown is used. Crowns with a diameter of up to 25 cm can be used on a low-power tool. Experts do not recommend using adapters in order to install the crown from a powerful punch to a low-powered one, as this will damage the tool. In addition, working with such a tool is unsafe.

The victory crown can only cope with thin reinforcement, if during drilling it stumbles on a thick metal grate, then its teeth will certainly break off. If you need to drill a through or deep hole, then first use a victorious crown, then apply a peak, then again take a crown, etc. If necessary, install a special extension cord on the tool.

Diamond drill is the best tool for drilling concrete, with its help you can get holes of any diameter and different depths. Due to the presence of water cooling, almost no dust is formed during operation. The diamond crown easily copes with the fittings, which is important. Such a drill has a tubular design that allows you to drill very deep holes. Using the recommendations of specialists, you can easily do the cutting and drilling of concrete with your own hands.

How and what is the right way to cut concrete

In the process of repairing apartments and houses, as well as in the construction of the “new building”, one has to deal with such works as cutting concrete. If the repair is not global, but local, the question arises sharply: how to cut concrete with a diamond disk, angle grinder, without dust.

Whether it is necessary to make shtrobs in a concrete wall, cut openings for windows and doors or just make a recess. In all cases, disks for an angle grinder on concrete will be one of the best solutions. Although the least dusty, the more expensive work option would be the classic sledgehammer.

At home, with self-repair, a concrete grinder with a special diamond blade is used for cutting concrete. In some cases, if someone is repairing professionally, you can use a chipper. However, an angle grinder is a more versatile tool, and for a one-time repair it does not make sense to purchase a chipper.

Choosing diamond blades for cutting concrete

Casing for angle grinder for a vacuum cleaner

However, the main problem when cutting concrete with an angle grinder is the huge amount of accompanying dust generated during cutting. It’s good if you have a angle grinder with a built-in vacuum cleaner, and if not. And here you need to give a few examples of how to find a way out:

  • The easiest way is when one works with an angle grinder, and the other stands next to it and collects dust with an ordinary indoor vacuum cleaner.
  • As already described above, purchase a tool with a built-in vacuum cleaner.
  • Having changed the design of the casing, attach the vacuum cleaner yourself. There are many ideas on this topic on the Internet.
  • Water the diamond blade while working with water. By the way, this technique gives the effect better than a vacuum cleaner. But here again: either work together with the “watering agent”, or attach a hose with water so that water is supplied to the disk.

How to angle grinder cut concrete

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Enlarging door and window openings can be a lot of trouble. For many homeowners, carrying out these works becomes a difficult task.

Find out here how to quickly and quickly cut the required hole in concrete without excess dust.

We cut concrete ourselves

Professional teams that provide services for cutting reinforced concrete products have equipment in their arsenal that allows them to perform all work quickly and with minimal dust. It will be necessary to call specialists when it is necessary to cope with a large amount of work. Otherwise, you can try to cut a hole yourself.

To do this, you will need:

  • 4 or 5 inch angle grinder (disc diameter 100 mm or 125 mm);
  • A diamond blade of the appropriate size, it can be ordinary segmented or TURBO.

When choosing diamond blades, you should pay attention not only to the price, it is lower for conventional cutting elements. But also for productivity, this figure is significantly higher for turbo blades for diamond cutting.

Ways to Reduce Dust

For many craftsmen, dust becomes a significant obstacle when cutting concrete structures. It not only makes breathing difficult, but also significantly reduces visibility, which can affect the accuracy of the work.

Very often, craftsmen attach a vacuum cleaner to an angle grinder. During operation of the coal grinder, the included vacuum cleaner collects dust, preventing it from scattering in different directions.

There is another way that can reduce dust. It is called wet cutting. The bottom line is that water is supplied to the disk, which moistens the concrete and prevents dust from forming. When using water, special discs for wet diamond cutting must be used.

Compliance with safety when working with an angle grinder

The eruption of holes in reinforced concrete is invariably accompanied by a large amount of dust and a high level of noise.

Therefore, it is necessary to use personal protective equipment:

  • A mask that protects the eyes from dust and debris;
  • Respirator. Provides free breathing in the dust cloud;
  • Special anti-noise headphones. They are able to protect against strong industrial noise, but they make it possible to hear the interlocutor’s speech and other quiet sounds;
  • Protective overalls and mittens. Their use will help protect the skin from injury from large particles of concrete.

Observance of the necessary safety measures will allow carrying out work even with a large emission of dust.

In the, we look how to cut an angle grinder and concrete puncher:

Source No. 1: http://rezka-betona.Kiev.Ua/

What does angle grinder consist of and how does it work?

The angle grinder is easy to understand. It is powered by a normal 220 V network. Due to this, an asynchronous, single-phase motor is started by pressing a button. From the engine there is a shaft on the gear, which starts by rotation. Part of the shaft extends beyond the body of the angle grinder, where the corresponding disk is mounted. Depending on the size of the rotary gears, the number of revolutions changes. The power of the engine of the instrument plays a role, otherwise the angle grinder will heat up due to a mismatch between the motor power and the load, it will quickly fail. For example, if you need a powerful angle grinder to work in potentially difficult conditions and heavy loads, then Boch is a good fit. Accordingly, a cheap model will not be able to meet these requirements and will not allow it to load its superpowers. Due to the gears, an angle of 90 ° is set. The tool body is made of impact resistant material. But in order to disassemble the angle grinder, it is necessary to diagnose it, determining the probable degree of failure.

What is required

Before you begin, you need to prepare, namely, have at hand:

  • Tester;
  • Straight and Phillips screwdrivers;
  • Knife;
  • Pliers;
  • Tweezers;
  • Electrical tape;
  • A brush or brush to remove dirt in hard to reach places;
  • Rags that do not leave small particles of tissue;
  • Alcohol;
  • File;
  • Sand paper;
  • Grease (a special tool is used to lubricate parts, not engine oil).

It is possible that something additional will be needed. It depends on the model of the angle grinder. For example, some manufacturers use bolts with a special head to prevent unauthorized penetration into the tool, which is not a problem, because all kinds of screwdrivers (nozzles) are available for sale.

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The main safety rule is to disconnect the power from the network during repairs.

There are a number of the most common instrument malfunctions, knowing the causes and methods of elimination of which it will be possible to repair the angle grinder with your own hands.

Symptoms and causes of malfunctions

Sparking collector brushes

The collector mounted on the rotor looks like a group of contacts that are erased by rotation, friction and burn out due to sparking. The angle grinder brushes themselves are made on the basis of graphite, so their wear becomes so fast. It is possible to determine the malfunction visually, in the area of ​​the grating strong sparking will be visible. In addition, it will be problematic to bring angle grinders to maximum speed. It is not worth delaying the repair of the tool, because every little thing brings serious troubles. When used with worn brushes, the tool warms up, which can lead to network penetration. As a result, an electric shock is inevitable, and this is injury and destruction of an angle grinder.

Depending on the size, model, manufacturer, angle grinder, there are several ways to remove the brushes. On some, they are removed without disassembling the tool body due to special holes. Remove the plugs to allow access. On other angle grinders, the back cover (an element separate from the main body) is unscrewed, which allows you to get to the brushes. There are more complex models of grinders, where the main body is disassembled in order to extract the elements.

Regardless of the method, after removing worn out brushes, the seat is cleaned of soot, rubbed and treated with alcohol. New parts are installed back to removal. The brush should not be tightly in the slot, a slight backlash is provided. Otherwise, it will be in the so-called jammed state, i.E. Either the spring mechanism will not be able to move it during rotation, or the brush will hit the rotor, which will lead to heating and rapid wear of the tool.

After performing tool repair and reassembly, the angle grinder can be checked for performance. With proper replacement, the result will be noticeable, excessive sparking will noticeably decrease.

Stop angle grinder and failure to start

Does not turn on. A frequently encountered malfunction problem is an angle grinder. Often the problem is the lack of tension. To begin with, it is recommended to make sure that the connection to the network, the presence of current. After the case is disassembled, the angle grinder and with the help of a multimeter check the integrity of the contacts from the mains voltage to the button input. For example, in Hitachi, the power cord at the entrance to the case has a kink weakness, which is visually difficult to determine without a multimeter. Properly, it means that you need to check further. The button is put into on mode and the device calls the output. If the signal goes, then the reason is not in it. A number of models of grinders are equipped with speed controllers, therefore, the signal on it is checked, for which it is translated to the maximum position. One of the causes of a malfunction can be brushes, their wear or loss of contact to them. Using a multimeter, the voltage is checked and they should be inspected for wear. If a problem is detected at any stage, it involves the replacement or repair of components. Then the angle grinder is checked for operability.

Spindle lock button failure

This button is located in the area of ​​the gearbox, designed for the convenience of replacing discs with an angle grinder. The failure of the button occurs due to its pressing during the rotation of the disk, as well as an attempt to remove the jammed disk. It’s not worth repairing the button, it’s more advisable to replace it entirely.

Engine shutdown during operation

In contrast to the failure to turn on, the angle grinder stop has other reasons. With the greatest probability, such an incident occurs when the brushes are lowered or the bearings are jammed. In the first case, the brushes are dismantled, inspected for wear, the nests are cleaned of dust, dirt, and then replaced. You should also diagnose brush holders for their integrity, replace if necessary. The bearing will have to be removed from the rotor, rinsed, cleaned, inspected for suitability for further use, lubricated. If the bearing is quite suitable, then you can try it again for performance. In case of failure, the bearing will have to be replaced.

Unnatural heating angle grinder

The angle grinder has a tendency to heat, because the engine is functioning inside, the rotor rotates, the gears are in contact. Instructions for the instrument contain recommended load times, periods for rest. Non-compliance leads to natural overheating. For exact confidence, you can turn to the Internet to read recommendations, watch a how to work with angle grinders of different sizes and manufacturers.

The second reason may be a backlash formed on the axis of the sleeve, seats, bearings. Parts are in constant friction, so wear becomes the cause of increased heat. The consequences of untimely diagnosis, repair, replacement of parts will lead to the destruction of elements, breakdown of the angle grinder.

Inability to increase speed

One of the reasons is the wear of the brushes, as described above. The cause of the malfunction can also be the speed controller block. The operating condition is checked with a multimeter. It is treated by replacement. Before blaming the electrical RPM for a breakdown, you should study the instructions for the tool, since not all models have this function.

Gear malfunction

This is part of the angle grinder in which the gears are located. Depending on the power, two different types of gears are installed in the angle grinders:

  • Spur-up. Up to 1100 W;
  • Helical. Over 1100 watts.

The second option has great strength, withstands high loads. Such gears are installed, as a rule, on large angle grinders, professional models.

The first signs of the output and the construction of the gearbox is sound. At startup, there is a creak, rattle, crunch. Further use of the tool will lead to instant cutting of the gear teeth. For a detailed diagnosis, analysis is carried out, inspection for the integrity of the gear mechanisms and the degree of wear. After replacement for new parts.

Strong sparking in the collector area

The rotating parts of the engine, the angle grinder, the so-called anchors, are subject to natural wear during the operation of the tool. This is what causes significant sparking from under the brushes of the collector. Here, the insulation of the armature or the shorting of the winding may be violated. Before proceeding with the repair of the angle grinder, the condition of parts suspected of breakage is thoroughly checked. The procedure can be done with your own hands, but the work is quite complicated, therefore, when deciding, it should be concluded that it is advisable to carry out self-repair of parts or install new ones. Repair of the anchor may be necessary due to the running condition or distortion of the bearings, untimely replacement, when due to this there is a gradual wear of the lamellas or plates.

Bearing failure

In addition to grinders, bearings are equipped with many tools, equipment, mechanisms. The cause of a bearing that is about to fail is known to many craftsmen, especially motorists. This is a buzz. During rotation, a play is formed between the shaft and the bearing, which causes noise. An additional signal is vibration when working with a tool, which increases with the destruction of parts. The problem requires immediate replacement, otherwise destruction occurs, which due to high revolutions, small metal fragments can disrupt the internal state of the gearbox and damage the angle grinder. Dismantling and installation is a simple job, so it is recommended not to delay the replacement. Cheaper to prevent than to regret.

Soft Start Failure

When the soft start controller fails, the angle grinder becomes extremely uncomfortable. Correction of the soft start module is possible only with knowledge of the electrical circuits. The average person may not even try to bring the regulator to life, it’s easier to install a new one.

Troubleshooting

Repairing a faulty tool should not be confusion, blind dismantling, in the hope that it should work now. Before proceeding with the repair, it is necessary to accurately identify the preceding failure of the action or inaction. It happens that about how the angle grinder went into the closet, it worked perfectly, and then suddenly refused. In this case, not excessive use is to blame, but coking with dust that has got inside the instrument, which after a long lie and shake has led to a malfunction. Any mistake has its name. Therefore, to identify the problem, a causal relationship should be established. In addition, this approach will prevent the risk of replacing serviceable parts, which will save money.

You can highlight the main causes that caused the breakdown of the angle grinder:

  • Violation of the integrity of the network wire. Fracture, grinding, eating insulation by rodents. Before use, it is recommended to inspect the power wire for damage, cuts.
  • As has been said, dusting the interior of an instrument. The work process involves a lot of dust, which is sucked into the angle grinder by the principle of a vacuum cleaner. Over time, the units of the unit become clogged, the button, the performance is violated. If the angle grinder is stored in a room with high humidity, the collected dirt, dust, debris begins to take on an increasingly solid form, which becomes a threat to the integrity of the entire tool system. After the next work, it is necessary to clean with a brush, and in terms of prevention, periodically open the body of the angle grinder for full service.
  • High humidity also leads to oxidation of the contacts, acts on the engine, which subsequently leads to disruption of the normal operation of the tool.
  • Non-compliance with the operating rules is often the main reason for the failure of any tool. If we saw, then to the victory, if we drill, then until the hands begin to burn. The angle grinder is designed not only for metal processing, but also for cutting stone, concrete, brick, granite, etc. In each case, the use of the tool is different in time. The load depending on the density of the material is not the same. Excessive effort will surely subsequently make itself felt.
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Mechanical malfunctions

With regard to this category of problems, this should include the breakdown of the insides of the gearbox angle grinder. It is wear and tear, bearing failure that is mechanical damage during the operation of the tool.

It is worth noting that recommendations for correction are standard based on the general structure of grinders. A separate model of the tool may have its own characteristics, additional elements, advanced parts. Some parts cannot be repaired at all, they are manufactured in such a way that they are only replaced. As for the tool for work, then every home master has it, so do not immediately refuse to do it yourself.

Repair Steps

Bearing Repair

Anyone who has encountered replacing bearings on a vehicle is well aware of the process of replacing them. First, the case is disassembled by an angle grinder, allowing access to the gearbox. Opening it, dirty grease is observed, which is removed, visible parts are cleaned. The task is to remove the part from the cage and remove it from the shaft. You can use special pullers, but often this is carried out with a punch using improvised materials. The inner part can be removed by screwing the tap into the ferrule. Gradual rotation forces the tap to rest, gradually squeezing the clip from its saddle. The inner bearing is removed by pounding. It must be installed so that the angle grinder hangs on the bearing. You can use a yew or other device. It is important that the emphasis is reliable. After that, using a punch, extraction is carried out by striking the shaft end. The main thing is not to violate the integrity of the latter, so a soft metal drift is used.

Having disassembled, it is cleaned of dirt, old grease, small metal particles, washed with alcohol. Before installing new parts, clean grease is applied. Assembly is carried out back to removal. Pressing is carried out using a tube of suitable diameter. Do not hammer in bearings directly by striking it with a hammer. After installation, free play and lack of backlash are checked. The angle grinder is assembled and a trial run is performed.

Gearbox repair

Analysis of the gearbox angle grinder is necessary for repairs and preventive maintenance. The gearbox is disassembled periodically, cleaning and lubrication are carried out. In this case, all parts are checked for wear, backlash.

Gearbox parsing sequence

The gear housing must be disassembled and then visible grease removed. Shaking the shaft determines the condition of the bearings. If there is play, they must be replaced. Next, the snap ring located on the shaft is dismantled, the nut is removed, then the gear. A proven method is used to extract the shaft from the housing by tapping in a suspended state. In order not to damage the parts, it is better to hammer out through a piece of wood. The circlip is removed and, following the recommendations for replacing the bearings, subsequent work is carried out, including the reverse assembly procedure. Before assembly, all elements are cleaned of old grease, washed with alcohol or kerosene, and then again lubricated.

Dismantling gears

Depending on the product model, the factory setting of gears is arranged differently. The drive is mounted on a thread or through a key. The slave is attached with a thread or similarly with a keyed connection. The process of removing gears depends on this.

Spindle Lock Repair

It is supposed to replace the latch completely with a block, which consists of a rubber ring, a spring and a plastic button, but you can try to repair it. The gearbox is opened, the spindle block is disassembled. After the spring, it is necessary to put the button on the inside, which is inserted into place on the outside of the case by an angle grinder. The spindle itself is mounted on the inside of the gearbox. By pressing, both parts are connected until they click.

Electrical part

The article has already mentioned problems with the power system and how to solve them. In addition, a breakage or shorting of the stator, rotor, as well as a violation of the collector lamellas, can occur. Troubleshooting or repair is a complicated procedure than the technical replacement of parts. You need to have experience, knowledge of the arrangement of electrical circuits, be able to use a multimeter, understand the principle of operation of the electric motor.

Stator Repair

One of the rare breakdowns that can cause careless care of the instrument, as well as its repeated overheating. A short circuit or an open circuit occurs. A spontaneous increase in speed of the angle grinder during operation indicates a faulty stator. The problem is fixed by installing a new stator, although you can rewind it if you wish, the ability. Dismantling differs in the model of an angle grinder, but the general order is as follows:

  • Gearbox removal;
  • Rotor removal;
  • Dismantle of a protective plate;
  • Unscrewing the stator from the body angle grinder;
  • Shutdown wiring;
  • Extraction by tapping a piece of wood on the body.

Rotor Repair

Causes of rotor malfunction can cause it to fail. Plus the impact of dust, dirt, the use of cutting, abrasive and other nozzles that are not designed for a particular model, an angle grinder. A breakdown is characterized by a change in sound during operation of the instrument, an increase in sparking, and smoke appears at the last stage. It is recommended not to repair the rotor itself, it is more advisable to replace it entirely.

Things to remember before starting work with the angle grinder

Precautions when working with multi-turn tools are not superfluous. It is strictly forbidden to start work with a feeling of tiredness, as well as in any type of intoxication. Tool management requires precise coordination of their actions. Before the start of the angle grinder, safety glasses, gloves are put on, overalls are convenient for work, which does not allow sparks, residues of heated metal to get on the open skin. It is forbidden to carry out work without a protective casing on an angle grinder. In some cases, a respirator must be used to protect the respiratory system. During operation, the position of the wire is monitored to prevent accidental damage. A check is made for malfunctions, the state of the nozzle used, and its integrity. It is worth remembering that a mistake can lead to serious injuries, and death also happens.

When buying a tool, you need to pay attention to a number of indicators, because buying “at random” is nothing but a careless attitude in terms of preparing for work. Why do I need an angle grinder, what kind of work, what size will be suitable. The weight of an angle grinder plays a huge role. On the market, Makita has the lowest weight among its relatives. Interskol is a bit heavier, but it has a good build quality and affordable price.

Care and Prevention

The life expectancy of a power tool directly depends on the degree of operation, the frequency of maintenance, timely diagnosis, troubleshooting at an early stage and commissioning. You should always use the recommendations of the manufacturer of the tool, which informs the consumer about the best options for a particular model. No need to force the instrument beyond measure, hoping that this is the best Japanese model. Although the leaders in quality and reliability are Japanese and German models such as Hitachi, Boch and Makita. However, any tool suffers from overload. In addition, it is recommended to periodically disassemble the angle grinder to clean from dirt, dust, debris, subsequently changing the lubrication of the running parts. Do not store the angle grinder in wet rooms, which will significantly affect the internal condition of the tool. Elementary rules of care will allow for a long time to use a good, high-quality tool, giving pleasure to a real master.