How To Replace A Disc With An Angle Grinder

How to replace

Discs for an angle grinder are a consumable, they wear out rather quickly when cutting. A worn-out disc must be replaced. Let’s see how to do this using the example of our Interskol-115 angle grinder.

Grinding wheels

In general, there are special machines for sharpening tools. sharpeners. Nevertheless, the rotating disc of the angle grinder is able to correct a blunt ax or cleaver, knife or scythe. Taking into account the wishes of the masters, the industry produces sharpening discs for the angle grinder 115 and 125 mm.

Sharpening discs turn your angle grinder into a sharpener

Discs are made of coarse abrasive compressed into a thick plate (over 5 mm) with a bulge in the center. If you install such a disc on the spindle, the flange is hidden in the recess and does NOT protrude above the plane of the disc. Coarse grinding wheels are also used for cleaning welded seams.

Dissolving the tree

Blades that cut wood are very similar to circular saw blades. Actually, this is the disc for the circular, only the bore diameter of 22.2 mm is suitable for the spindle of the angle grinder.

The disc is broken, the flange is jammed

Imagine that a craftsman makes an anvil out of a steel rail, cuts out a sharp angle grinder. The disc is warped and jammed. The motor continues to run and tightens the flange firmly. All work stopped. How to change a disk if now it does not unscrew?

  • We disassemble the gearbox. Unscrew the mount and remove the gearbox housing. With a gas wrench or pliers, we hold the spindle shaft, with a horn or a second gas wrench, a steep flange. The disc is not affected by this method, you can also remove a normal, good disc. The method works even if the spindle lock is broken.
  • We use two gas keys. The method does not require disassembling the angle grinder. Carefully break out the rest of the disk to get to the bottom flange. The upper flange is clamped with the first gas wrench, with the second wrench we hook the lower one. Steep in opposite directions.
  • We heat the nut with a burner. We heat the seated nut with a portable gas burner. The nut will expand from heating and can be easily unscrewed.
  • Saw the flange with a hacksaw. Some craftsmen prefer to cut a stuck flange with a hacksaw. Barbaric way. you have to buy a new nut.
  • Lubricate the threads with penetrating grease. Pour WD-40 liquid on a stuck nut. It penetrates into narrow gaps and threaded connections. After a five-minute break, try to move the nut with a wrench.
  • Cut out the remains of the disc with a hacksaw. Break the disc with pliers as long as possible. Remove the protective cover, insert a metal hacksaw into the slot and cut out the remnants of the abrasive wheel. A delicate and reliable method. The angle grinder does not require disassembly and harsh impacts on the tool. The master must be patient, as the method will take up to an hour. The abrasive quickly erases hacksaw blades, several pieces are required. Advantage. preservation of the warranty for the angle grinder, there is a risk of breakage.

Grinding

The next most important work that the craftsmen entrust with the angle grinder is grinding and polishing. Similar processing is applied to metal, wood, plastic and other materials.

Petal circle on wood: dozens of emery petals quickly cut chips

The choice of grinding discs is very wide. If you are restoring a sideboard, a petal circle is suitable for removing layers of shellac. It covers large surfaces and cuts a lot of material in one pass.

The grinding attachment is a plastic circle to which sandpaper is attached with Velcro

The other attachment is screwed onto the spindle of the angle grinder. Sandpaper is attached to it with Velcro. For coarse cutting. P60 or P80, for finer. P120 or P180. As the grain size decreases, grinding smoothly turns into polishing.

Polishing disc made of alpaca wool

Specially for polishing there are nozzles in the form of pillows, felt or cloth discs. Before work, a polishing paste is applied to them, for example, GOI.

Sawing stone

For cutting stone, we recommend taking a special disc. they use a different abrasive. silicon carbide. It will cope with white sand-lime bricks and slate. But red brick, tile and even more concrete. they will NOT succumb to it. you need to take a diamond disc.

Slicing through the metal

Cutting materials is the most common task in the repair and construction site, a simple abrasive wheel for metal will easily cut steel bar, roofing iron or plastic. These wheels are made of corundum (crystalline alumina) or electrocorundum (synthetic corundum).

How to choose the thickness of the cutting discs

Every craftsman knows that the thinner the instrument, the better. Less material goes into shavings, dust is easier, the cut comes out cleaner.

Discs for angle grinders 115 and 125 mm are produced with a thickness of 1.0-2.5 mm. Discs 150 and 200 mm. 1.8-4.0 mm thick. Pressed corundum powder reinforced with synthetic mesh.

Recommended cutting disc thickness. 1.6 mm.

Types of discs for an angle grinder: how to choose the right one

The industry manufactures angle grinders and discs for them in standard sizes: 115, 125, 150, 180 and 230 mm. an angle grinder from 180 mm is used for cutting stone. The most common size of machines for home and summer cottages is 125 mm; the most discs and attachments are produced for them.

We offer to divide the discs according to their purpose: cutting, grinding, sharpening and roughing. Let’s consider in detail each type.

Remove disc from angle grinder

First, figure out which way to unscrew the nut.

The flange must always be turned in the direction in which the disc rotates.

For this kind of work, you will need either two gas keys or two clamps.

Here’s what you need to do: Destroy the remains of the disc, with one key Fix the washer located behind the disc, unscrew the flange with the second.

To install a new disk, after cleaning the casing, you must perform the following actions:

  • Install the bottom flange in place;
  • We put a special gasket on top of it (if gaskets are not provided, you can cut them yourself. The optimal material will be cardboard or tin).
  • Install the disk;
  • We put the second gasket;
  • Top Install the top flange;
  • We wrap the upper flange by hand in the opposite direction from the rotation of the angle grinder wheel, while holding the disk itself;
  • Next, press the release button again and scroll the flange with your hand until you do NOT feel resistance;
  • At the final stage, we make the final fixation using the same open-end wrench. To do this, insert the key into the holes and scroll a little more.

After all the actions taken, you can safely continue to perform work.

One of the most frequently asked questions about mounting / dismounting tooling of an angle grinder is: “Which side does he put the disc on the angle grinder?”.

Usually, inexperienced masters ask such a question. Is it possible to set the circle on the wrong side. Yes. Firstly, if the disc is not flat, but, for example, petals, then you will NOT be able to install it incorrectly, if the petals are located incorrectly, you just distort the casing and the handle of the angle grinder. That is, the question disappears by itself.

If the circle is still flat, then you should be guided by its label, the so-called “shirt”.

If the angle grinder rotates towards itself, the disc should be installed with the “jacket” outward, if the disc rotates away from itself, then, accordingly, it must be installed with the “jacket” inward.

READ  How to Cut an Angle Grinder Corner Correctly

If you do not adhere to this algorithm, there is a high probability that the disk will fail very quickly or immediately deform.

Remove disc from angle grinder

This method is used in extreme cases.

The main question: How to choose the right disc for your angle grinder?

When choosing accessories for an angle grinder, first of all, you should decide on the type of proposed work. The choice of the type of disc will depend on this. We also want to mention that when choosing consumables, be sure to take into account the power characteristics of each specific model. Examine the labeling. Often, it is printed on the disc itself and includes a set of symbols by which you can determine the relevance of this consumables to perform the intended work.

Also, focus your attention on such a parameter as the diameter of the disc. In no case should it exceed the size of the protective cover on the particular tool model. The size range of discs is usually represented by the following diameters 115, 125, 150, 180 and 230 mm. The most common diameters are 125 mm. And 230 mm. They are optimal for most types of work and the capabilities of the tool itself.

Among the grinding discs based on bakelite, the most popular discs are 6.00 mm thick. This parameter depends on the total diameter of the disc. The relationship is as follows: the larger the disk diameter, the greater its thickness and vice versa.

Cut-off wheels for an angle grinder, in turn, have their own subspecies, such as:

  • Cutting wheels for metal work;
  • Abrasive wheels for working with stone;
  • Wheels for woodwork;
  • Diamond discs (mentioned above).

The purpose of each type of disc usually corresponds to its name.

Among the grinding discs, there are four main subtypes. flap, wire, diamond and bakelite-based grinding discs (straight, profile T41 and disc-shaped, profile T27).

  • The flap disc is made from sandpaper. Its main purpose. This is the elimination of existing coatings such as old paint, primer or paint coat. Also, with disks of this type, wood products are polished.
  • Wire discs are used by artisans to remove rust. They can also remove other types of stubborn dirt.
  • Diamond discs are used for stone polishing.
  • Disc discs are made of plastic or rubber and are used for polishing metal surfaces.

Discs for an angle grinder differ among themselves in the following main features:

  • Outside diameter;
  • Disc thickness;
  • The material from which the disc itself is made;
  • The characteristic of the maximum rotation speed;
  • And, of course, the area of ​​proposed work.

For the best understanding, let’s take a look at the main types of angle grinder discs and define their application:

  • Cut-off wheels. It is the most widely used consumable for angle grinder. Their main purpose is to work with metal, stone and wood. A variety of cutting wheels for an angle grinder are diamond discs. It is a heavy-duty tooling for processing high-strength materials such as reinforced concrete, tiles, porcelain stoneware, marble.
  • Grinding and roughing discs. As the name implies, this type of disc is used for grinding various materials, for example, polishing products made of stone, or for removing (roughing) the top layer, for example, removing a layer of rust or old paint coating.

Remove disc from angle grinder

This method involves the use of the famous VD-40 grease.

It is probably like electrical tape, applicable in all cases of life.

You need to spray the flange, wait about 5 minutes and try to unscrew it with a wrench.

How to remove, change a jammed disc from an angle grinder?

How to remove a disc from an angle grinder. An angle grinder (hereinafter referred to as an angle grinder), popularly referred to as an angle grinder, is probably the most demanded tool, which is present in the arsenal of almost every master, regardless of his qualifications.

This is a tool that is actively used in abrasive processing: cutting, grinding, cleaning workpieces from stone, metal and many others. It is widely used in areas such as: construction, woodworking and other similar types of work. Like any other tool, the angle grinder is also NOT divided into several classes.

This refers to the following: household, semi-professional and pro-class instrument. This classification is determined by the power resource of the tool, its performance, the presence of certain additional options, material and build quality, etc.

Consumables for an angle grinder, in addition to various types of cleaning brushes, are cut-off wheels and a variety of grinding discs. Attachments for angle grinders: how to make the right choice?

How to remove it?

Discs, especially for cutting, burn out quickly and have to be replaced.

It would be useful to remind once again about the need to disconnect the “angle grinder” from the network. Work to be done with fast rotating parts and better protect yourself.

If you need to replace a worn disk, you need to perform a number of simple operations.

  • The disc is secured to the stem stem with a threaded nut. In the set of any angle grinder there is a special key, on the horns of which a pin is fixed, which cling to the flange holes.
  • The spindle is fixed with a special button, the cotter pin of which, when pressed, enters the hole in the gearbox, thus fixing it. I pressed the button with my right hand, while with my left hand you need to Unscrew the fastening nut with a wrench. If the nut has moved out of place, unscrew it by hand. That’s it, now the disc can be removed.
  • There are times when for some reason the key was not at hand. What to do? The easiest way out is to stop working. But, as they say, this is not our method. It is also possible to unscrew the “angle grinder” clamping nut without a key. Often a pipe (gas) wrench is used for this. On such a key there is a device that spreads it. It is necessary to tighten the nut and, fixing the “angle grinder” gearbox with a button, move it from its place. Then it can be unscrewed by hand.
  • There are holes in the grove for fixing it with pins on the horns of the key, you can Unscrew it, tap with a hammer on a chisel or a bar that is pressed into the hole.
  • Sometimes it is possible to push the nut by simply tapping its edge with a hammer in the direction of twisting. However, in this case, damage to the flange may occur, especially the holes for the pins of the key; in the future, it may be impossible to apply the key to such a Nut.
  • A very good result is obtained when using a nail to make a key. It is better to choose a large nail, from 100 mm. Using a hammer and pliers, the nail is U-shaped. A hacksaw or chisel is used to cut off the tip and head of the nail. With such an improvised key, you can try to knock off the nut. You can bend the ends of such a key, then it will turn into a kind of open-end key, but this will require a lot of labor. You can also insert a gate, such as a hammer or other nail, into the arc formed by a bent nail.

How to place a disc on an angle grinder correctly?

  • How to install correctly?
  • How to remove it?
  • How to change a disk if it is jammed?
  • Advice

The disk “angle grinder” (angle grinder) is one of its main working parts. It is the disc that determines the application of the instrument. With it, this machine can be used to cut, grind or polish various materials. Discs, depending on the purpose, differ from each other: from abrasive grit. for metal, steel milling cutters and circular saws. for woodworking, with diamond dusting. for stone and tiles, all kinds of brushes, brushes and emery wheels. for polishing various surfaces.

The “angle grinder” disc is a consumable material; you will NOT be able to save on it in the process of work. The disc will gradually wear out (burn out) and need to be replaced. When planning work, you need to be prepared for this and it is better to stock up in advance Several removable disks.

How to install correctly?

Installing a disk on an UMS is not so difficult. You can change it simply by following the instructions, although there are some nuances here.

First of all, you must install the disc in the correct direction. This is especially important if it is detachable. Typically, the side of the disc with the label on which the marking is indicated and, accordingly, the scope of its application, is slightly different from the opposite side. It may not appear immediately, but with prolonged intensive work, the difference will not only be noticeable. it will be obvious.

On the side on which the label is glued, a wide pressure washer is placed, and the movable nut acts on it when tightening (installing the disc). The nut slides on the polished surface of the washer, without it it will be more difficult to tighten or unscrew, since the abrasive will firmly hold the nut and more effort will be required. This is especially important if a quick replacement of the disc is required or if it is broken (jammed).

READ  How to Install the Cut-off Wheel on an Angle Grinder Correctly

With circular saws or other products that have teeth or a significant difference in two sides, the problem usually does not arise. For example, it will NOT work to fix the grinding disc on the contrary: it will simply be impossible for them to work.

Discs for stone, including diamond ones, have a special rotation indicator in the form of an arrow: When installing them, you need to fasten them Considering where the rod will rotate.

It is also important to consider the size of the disk when installing. In no case should you neglect safety and remove the protective cover. it is better to choose a disc of the appropriate diameter. Sometimes a disc from a large unit is put on a smaller “angle grinder”. However, a worn out disc, as a rule, cuts worse, the working surface is limited to about half the radius of the disc, the structure is slightly different. The disk “burns” faster, and produces less work. This operation can be justified if the stem diameter is the same. But it will NOT be possible to change back.

When installing under the disc, debris must NOT fall. Of course, the clamping nut can easily live on small objects, something will press into the surface of the circle. But imperceptible to the eye, the skew will cause a displacement of the plane of rotation and, as a result, a strong vibration of the entire mechanism, it can become a prerequisite for the destruction of the disk and, of course, it is not worth hoping for an accurate cut in this case.

The clamping nut must be unscrewed with the wrench supplied with the tool. To prevent the stem from spinning, it must be locked by pressing a special button. It is necessary to unscrew the nut while keeping the button pressed.

After twisting the nut, a disc is put on the free rod, face out, and you need to make sure that it is installed exactly in the seat.

How To Replace A Disc With An Angle Grinder

The kit for the new “angle grinder” always includes a certain amount of cardboard spacers. when installing the disc, they must be laid so that they are between the disc and the clamping elements. Such gaskets will help unscrew a broken or jammed disc.

Further, the nut is manually tightened to the stop and tightened with a special wrench. That’s it, the “angle grinder” is ready to work.

How to change a disk if it is jammed?

What to do if the wheel on the “angle grinder” is stuck? This can happen, for example, when, as a result of work, pieces of the workpiece being cut sharply clamp the rotating disc. Often this leads to its destruction.

It can be very difficult to unscrew the nut tightened as a result of rotation, if the circle is bitten.

  • One of these methods would be to use two gas keys at once. In this case, the rest of the disk is needed at the bottom with pliers. With one wrench it is necessary to clamp the part of the stem located under the disc, and with the second. Unscrew the flange.
  • Sometimes, in order to gain access of the gas wrench to the “angle grinder” rod, you have to disassemble the gearbox.
  • A simple fixture. cardboard or tin washers. saves the problem of a jammed nut. They are often sold with an “angle grinder”. But over time, they can be lost or become completely unusable. Making homemade washers is not at all difficult. However, it is better not to neglect them.

Advice

If you had to use a gas wrench, you must remember about the very powerful shoulder of such a wrench and about the effort that is applied to the “angle grinder” parts. If you do not act carefully, the spindle lock could be ripped off or the gearbox could be damaged.

All manipulations with the disc of the angle grinder must be performed with the power supply completely disconnected (the plug must be removed from the socket). Any inadvertent pressing of the start button will become a prerequisite for turning on the electric motor, and the speed of rotation of the rod is very high. In this case, injuries cannot be avoided.

Working with an “angle grinder” involves a lot of waste in the form of metal or wood shavings and dust. Before starting work, you must wear special safety glasses: they will protect your eyes from fragments of the cutting wheel itself in case of jamming and destruction.

Glasses are essential Not only as a safety element. If the eyes are protected, more attention can be paid directly to the work of the “angle grinder”, to ensure the correct cut or selection of the correct operating mode. This will allow the most effective use of consumables (cutting wheels), minimizes the occurrence of abnormal situations with a biting disc or its destruction.

A protective mask that completely covers the face will perfectly replace glasses. this is especially important for a master with impaired vision, who wears diopter glasses, on which safety glasses cannot be worn.

The disc on the “angle grinder” can be installed both “away from you” and “towards you” depending on the direction of rotation and, accordingly, the flow of chips. In work, this does not make a fundamental difference. However, the “angle grinder” with a circle “towards itself” when biting the disc tends to jump out of the cut forward, and not on the one who uses it. This is especially important when working with powerful tools, but a small angle grinder can pose a serious hazard.

A specially mounted extension cord with a plug socket, preferably without grounding, will help to quickly stop the operation of a machine that has escaped from the hands.

“Angle grinder” is a rough processing tool and it is not worth it to strive to obtain an ideal surface as a result of its work, the main thing is to make a rough cut, which later, if necessary, can be processed in other ways.

To work without clamps and jamming long metal workpieces It is better not to cut to the end, leaving 1-2 mm of metal in the cut: they will be easy to break off afterwards, this will practically NOT affect the quality of the workpiece.

It is better to place small workpieces in a vice or with a clamp to a workbench or other reliable horizontal surface. Here the pressure density depends on the quality of the cut and safety.

How to correctly place the disc on the “angle grinder” can be seen in the following.

How to change a disc to an angle grinder without a key?

Use the gas key. Using an adjustable pipe wrench, grasp the nut and carefully unscrew it, and not apply great force. Disadvantage: you can crush the nut, break the rotation lock.

Make a homemade wrench for the angle grinder. This requires a long nail (at least 100 mm). It is necessary to cut off the cap, sharp and give the Nail a U-shape. It should be bent in such a way that the racks of the “tool” fall into the holes of the flange. If the nut is tightened tightly, insert any metal bar between the posts of the nail and, grasping it with both hands, rotate the structure in the direction of the circle’s movement. At this time, you need to press and hold the spindle lock button. The method is safe, but it takes time and additional tools. a hacksaw, a vice, a hammer.

Tapping with a chisel. Before changing the disc, you can treat the spindle shaft with WD-40 fluid and wait at least 15 minutes. Then put sharp thin chisels at an angle to the hole of the flange nut and gently tap over the entire surface of the hole with a metal hammer. Sooner or later, thanks to gentle tapping, the nut will break off, and it will be possible to unscrew it manually. The disadvantage of this method is that you can damage the holes and spoil the flange.

Heat the nut. If it is difficult to unscrew the nut of the angle grinder by hand, you can heat it up a little with a gas burner or autogenous machine. You need to unscrew the flange with gloves so as not to burn yourself. This is the most risky of the proposed methods. Can overheat bearings and oil in the gearbox of an angle grinder.

Finally, I would like to mention a few fundamental points regarding replacing the disc with an angle grinder.

  • The angle grinder must be fitted with a suitable size disc. It is necessary to strictly observe safety precautions and in no case do NOT remove the protective cover in order to install a disc of a larger diameter. When choosing a disc, you need to take into account the model of the power tool, its power, spindle speed.
  • The disc that rotates at high speed creates defamation on the protective cover of the angle grinder. Therefore, when changing a disc, remove and clean the casing.
  • Some models of angle grinder have washers to prevent the disc from getting jammed between the flanges. At least the support flange can be fitted with a rubber washer. Instead of factory hardware, you can cut cardboard, rubber or plastic spacers. 2 gaskets need to be used: between the support flange and the disc, between the disc and the nut.
  • Do not forget: if the circle rotates clockwise, then the nut is also unscrewed clockwise and tightened counter.
  • If you don’t want to buy a new wrench, fit a Bosch quick-locking nut to your angle grinder. it can be easily unscrewed by hand.
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The main thing is that when changing a disc to an angle grinder, without violating safety precautions and performing all manipulations with the tool turned off from the network.

Disc types for angle grinder

The angle grinder is widely used in construction and repair technological operations. Angle grinder discs differ from each other:

  • Outside diameter and thickness;
  • Material and manufacturing method;
  • Purpose and maximum rotation speed.

The choice of discs for an angle grinder implies knowledge and consideration of the peculiarities of not only the workpieces being processed, but also the capabilities of the tool itself.

How to place a disc on an angle grinder correctly?

In order to correctly place the disc on the angle grinder, it should first be noted that the disc is installed on the spindle of the angle grinder using a special clamping flange with M14 thread. Let’s take a closer look at how to remove a disc from an angle grinder. In order to unscrew the disc from the angle grinder, you first need to dismantle the flange. Especially for such purposes, manufacturers complete the angle grinder with a special open-end wrench. It has a specific shape. The pins located on the horns of this key are inserted into specially provided holes on the flange.

To unscrew the flange, fix the spindle. To do this, clamp the latch, which is usually a button on the top of the case. When pressed, the cotter pin is placed in the hole of the driven disc of the gearbox, and this in turn prevents its rotation. Next, we insert the pins of the key into the specially provided holes on the flange, pressed the latch, it must be simultaneously turned counterclockwise and move the flange from its place. If the manipulations were successful and the flange gave in, you can Unscrew it by hand and put it aside.

Now let’s dismantle the disk. Often, in the process of intensive work with the tool, a certain deposit of small particles of metal and abrasive material forms on the inside of the protective casing. For optimal, stable and durable operation of the angle grinder, remove the bottom of the flange and clean the casing with a steel brush.

Remove disc from angle grinder

This method is used in extreme cases.

How to choose and replace a disc with an angle grinder

The main spare part of the angle grinder (angle grinder) is the replaceable cutting tool. A high speed abrasive disc cuts, grinds or polishes materials. For metal processing, circles are made from abrasive chips, steel cutters for stone are used for wood. metal discs with diamond dust. Special attachments. squeegees, flap emery wheels additionally expand the capabilities of your angle grinder. Next, we will learn what types of disks are, how to properly remove the old one and install a new one, and also consider the possible problems that arise during the replacement process and ways to solve them.

Remove disc from angle grinder

How to change the disc to an angle grinder to avoid disassembling the tool and intensive impact on it? To do this, Krosh disc, as far as possible, dismantle the protective cover of the angle grinder and remove the rest of the wheel with a hacksaw.

When carrying out all the above manipulations Do not forget about safety precautions.

Take care of yourself and the safety of your instrument.

Make it a rule that the replacement of cutting and grinding wheels with an angle grinder is carried out with working gloves, and the work itself must be carried out in special protective glasses.

Grinding wheels

In general, there are special machines for sharpening tools. sharpeners. Nevertheless, the rotating disc of the angle grinder is able to correct a blunt ax or cleaver, knife or scythe. Taking into account the wishes of the masters, the industry produces sharpening discs for the angle grinder 115 and 125 mm.

Sharpening discs turn your angle grinder into a sharpener

Discs are made of coarse abrasive compressed into a thick plate (over 5 mm) with a bulge in the center. If you install such a disc on the spindle, the flange is hidden in the recess and does NOT protrude above the plane of the disc. Coarse grinding wheels are also used for cleaning welded seams.

How to remove it?

Discs, especially for cutting, burn out quickly and have to be replaced.

It would be useful to remind once again about the need to disconnect the “angle grinder” from the network. Work to be done with fast rotating parts and better protect yourself.

If you need to replace a worn disk, you need to perform a number of simple operations.

  • The disc is secured to the stem stem with a threaded nut. In the set of any angle grinder there is a special key, on the horns of which a pin is fixed, which cling to the flange holes.
  • The spindle is fixed with a special button, the cotter pin of which, when pressed, enters the hole in the gearbox, thus fixing it. I pressed the button with my right hand, while with my left hand you need to Unscrew the fastening nut with a wrench. If the nut has moved out of place, unscrew it by hand. That’s it, now the disc can be removed.
  • There are times when for some reason the key was not at hand. What to do? The easiest way out is to stop working. But, as they say, this is not our method. It is also possible to unscrew the “angle grinder” clamping nut without a key. Often a pipe (gas) wrench is used for this. On such a key there is a device that spreads it. It is necessary to tighten the nut and, fixing the “angle grinder” gearbox with a button, move it from its place. Then it can be unscrewed by hand.
  • There are holes in the grove for fixing it with pins on the horns of the key, you can Unscrew it, tap with a hammer on a chisel or a bar that is pressed into the hole.
  • Sometimes it is possible to push the nut by simply tapping its edge with a hammer in the direction of twisting. However, in this case, damage to the flange may occur, especially the holes for the pins of the key; in the future, it may be impossible to apply the key to such a Nut.
  • A very good result is obtained when using a nail to make a key. It is better to choose a large nail, from 100 mm. Using a hammer and pliers, the nail is U-shaped. A hacksaw or chisel is used to cut off the tip and head of the nail. With such an improvised key, you can try to knock off the nut. You can bend the ends of such a key, then it will turn into a kind of open-end key, but this will require a lot of labor. You can also insert a gate, such as a hammer or other nail, into the arc formed by a bent nail.

What are cardboard pads for?

This is very simple and very important. To ensure that the flange can always be easily unscrewed, a gasket must be placed between the abrasive disc and the flange. Or two. on each side of the disc.

These circles ensure the flange does NOT get stuck

These discs can come with an angle grinder or you can cut them yourself.

For the spindles of angle grinders, factories produce thin and thick abrasive discs, metal cutting wheels, nylon brushes. All these spare parts turn the angle grinder into a versatile tool and unleash its potential in unexpected ways. For example, an angle grinder turns into a sharpener. It is not difficult to change the disc, but the master must be aware of some features of the process in order not to get into a difficult situation.