How To Remove A Wheel From An Angle Grinder

Dismantling with a nail

It will be easy to remove the damaged disc with a key made from a nail. According to experts, its optimal size is not less than 100 mm. First, the nail must be driven into a U-shape. It is important that the distance between its ends matches the two holes in the flange. Then, using a hacksaw from “hundreds”, you need to carefully cut off the cap and sharp. Now the homemade wrench can be inserted into the flange, fix the spindle and unscrew the mount. If it so happens that the nut is tightened very strongly, a larger lever will be required. It is necessary to insert another “weaving” between the two vertical ends.

What is the cause of the malfunction?

Before wondering how to remove a disc from an angle grinder, experts recommend figuring out why the nut is biting on the angle grinder. It is noticed that this problem is mainly observed in angle grinders, in which a significant disk size. A disc over 18 cm is considered large. During operation, a torque is generated. Further, when the master starts cutting, a small bump occurs. In other words, a force is exerted on the disk. If the size of the equipment is less than 12 cm, then this impact will be negligible. If the disc is large, then the nut is tightened by inertia more. As a result, it is NOT possible to dismantle it in the usual way. Learn more about how to remove a disc from an angle grinder below.

How To Remove A Wheel From An Angle Grinder

Best ways to remove a disc from an angle grinder without a key

Best ways to remove a disc from an angle grinder without a key

The angle grinder is in every sense a universal tool with which you can cut wood, steel profiles Handle stones and concrete, perform roughing and grinding work, as well as sharpen hacksaws for second tools.

Each of the listed operations requires a certain circle.

For example, it is impossible to grind the surface with a thin angle grinder cut-off wheel, because the attachment will deteriorate very quickly. How to properly remove a disc from an angle grinder and put it back when severing or a wheel shelf?

How to remove a disc from an angle grinder? It can be done even without a key.

The wheels are fastened to the angle grinder using a swivel nut. As a rule, in order to remove it without problems, a special key is supplied with the tool. Nevertheless, in work, it is far from always at hand. Meanwhile, it is necessary to replace the disk right now.

On the website https://dewalt.Top/rashodnik-dewalt/abrazivnij-instrument/ You can get acquainted with the offer of abrasive consumables for the tool. Below we describe the Possible ways to remove wheels from an angle grinder, when there was no key at hand.


Use a gas wrench. To do this, grab the nut with an adjustable pipe wrench, and then carefully unscrew it, practically NOT applying any effort. The disadvantage of this method may be that you can wrinkle the nut or even break the rotation lock.

How to remove a disc from an angle grinder with a wrench?

If the special wrench, which is attached to the angle grinder, and is not lost, then it will be easier to cope with the task. For those who are interested in how to remove a disc from an angle grinder, experts advise first of all to fix the spindle. It is on it that the disc is located and is pressed with a flange. It is dismantled with an open-end wrench. To make this technically possible, the flanges are equipped with special holes into which the key pin is inserted.

To fix the spindle, you need to press the button, which is located on the housing on the back of the disc. During operation with an open-end wrench, the lock must not be released, otherwise the spindle will continue to turn. If the disc in the angle grinder turns clockwise, turn the open-end wrench counterclockwise and vice versa. It is important that the flange yields and moves. Now it can be completely unscrewed and set aside. Then the old disc is removed and replaced with a new one.

What causes the problem

  • When material resistance appears in the circle, the angular velocity of rotation will sharply decrease, and it will slow down.
  • The electric motor continues to operate at normal speed by inertia for a moment, which is why it carries the spindle and gearbox with it.
  • The nut for fixing the inertia should be even stronger tightened along the threaded connection of the spindle head, and this contributes to the pressing of the cutting disc.

And when the process of tightening the flange for fixing is completed, we have an extraordinary situation. The following factors will affect its appearance:

  • Huge disk size.
  • Very high power tool.
  • Rotor dimensions.
  • A sudden increase in the depth of cut, i.e. Resistance increases.

If this is the case, remove the disc from the angle grinder, but this can be very difficult to do. Additional measures will be required here.

A stuck nut on the disc. how to Unscrew?

Removing a disc from an angle grinder, if it is bitten for some reason, is not so easy, especially so as not to damage the cutting element or the electric tool itself. In addition, we propose to consider several ways to solve the problem.

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Replacing the disc by counter movement

This method has several advantages. you can carry out all the work without using a key and even with a broken spindle lock. When working with an angle grinder, beginners very often mistakenly believe that if the stopper is broken, it will be almost impossible to unscrew the nut. But that’s actually not the case, and you don’t even need a key. The bottom line is that the abrasive wheel needs to be rotated in different directions. Also put on heavy gloves, and hit the cutting edge of the wheel several times. This is how you can provide variable movement in different directions. As a rule, a few hard blows are usually enough to easily unscrew the stuck nut.

With socket head and open-end wrench


This is one of the easiest ways to remove a blade from an angle grinder without using a wrench. The nut that locks in will heat up with an industrial hair dryer or even a gas burner. After that, the flange can be unscrewed and it will be much easier to do this. But still there is a risk of damage to plastic parts in a gearbox or an angle grinder.

With a nail

To do this, the best way is to use a nail with a length of 10 cm. It should be bent into a U-shaped figure so that the ends fit freely into the holes of the clamping flange. Remove the cap and the sharp ones, and then insert the nail into the holes and unscrew the retainer. If the efforts of the hands are not enough, then a screwdriver or a nail should be added as a lever.

The use of this tool is justified by the increase in the applied torque due to the increased shoulder. It will be much easier to unscrew a jammed connection with a gas wrench, but when eliminating biting, remember that applying excessive force, there is a huge risk of damaging the spindle lock or even the clamping nut.

Using a hammer drill / hammer drill

You can unscrew the disc on an angle grinder without using a key using a perforator or even a drill, but first you must put it in the jackhammer mode. In the role of a working nozzle, a suitable size of storms should be used, usually 0.6 cm. The drill should be resting against the edge of the clamp nut hole, fix the movement of the spindle and momentarily turn everything off. This method will make it possible to turn off even very difficult snacks.

Tapping nuts

Destruction of the cutting disc

It is possible to unscrew a jammed nut by completely destroying the cutting wheel. If it already has damage, then you can manually lower it, but most often this does not work. The safest option would be to take a sheet of metal or a hacksaw and spray everything. This leaves you with a center ring and hard-to-reach pieces. When you find a suitable plate, then clamp it in a vice, grind off the rest of the grains (abrasive) on it so that only a metal ring remains. After that, it will be easily unscrewed with the simplest key.

There is also a more radical way of unscrewing a jammed clamping nut, namely sawing it. You can resort to it in the most extreme cases, and naturally, you can find a new part, but here you will need to spend your time, as well as funds. Very often, spare parts for clamping are included in the delivery of an angle grinder.

How to remove a disc from an angle grinder: methods, expert recommendations

It would seem that there is nothing difficult in replacing the disk with a new one. Nevertheless, at this stage, the master is faced with a problem. the nozzle is tightly clamped by a fixing nut that does NOT want to loosen. How to remove a stuck disc from an angle grinder? What methods are used for this? What improvised means can be used if the original key is lost? You will learn how to remove a clamped disc from an angle grinder in this article.


This is one way to remove a disc from an angle grinder without a key. The fixing nut is heated with an industrial hair dryer or gas burner. This will make the flange much easier to unscrew. However, there is a risk of damage to plastic parts of the angle grinder or gearbox.

Tapping nuts

This method is similar to the previous one, only you can use a suitable metal rod or chisel. After fixing the spindle head, tap on the edges of the clamping holes in the direction of the wheel movement. By slightly sliding the latch off the dead center, you can unscrew it by hand. However, the method is not the most harmless for the tool. the mounting holes for a standard key are damaged.

Punch or drill in slotting mode

You can unscrew the disc on an angle grinder without a key using a drill or a perforator; it will first switch it to jackhammer mode. A suitable storm is used as a working nozzle, most often 6 mm. Push the drill against the edge of the clamping nut hole, fix the movement of the spindle and briefly move it from its place. This method allows you to turn away even very difficult snacks.

With a gas wrench

The use of this tool is justified by the increase in the applied moment of force due to the increased shoulder. Using a gas wrench will make it much easier to unscrew a jammed connection. However, when eliminating biting, it is important to remember that if you apply excessive force, there is a risk of damage to the spindle lock or clamping nut.

Replacing the disc in reverse rotation

This method has several advantages. it can be carried out without a key and with a broken spindle lock. Angle grinder newbies mistakenly believe that if the stopper is broken, it is almost impossible to unscrew the nut. However, this is not the case. You will NOT even need keys.

The bottom line is that the abrasive wheel needs to be rotated in different directions. Wearing thick gloves, you need to hit the cutting edge of the circle several times. It is with this that you provide variable movement in different directions. As a rule, a couple of sharp blows are enough so that the nut can be easily unscrewed.

With a nail

For THESE purposes, a 100mm nail is best. It should be bent into a U-shape so that the ends fit freely into the holes of the clamping flange. Sharp and cap are removed. I inserted a nail into the holes, the latch is turned off. If the efforts of the hands are not enough, then add a nail or screwdriver in the form of a lever.

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Open end wrench and socket

In this case, the existing standard tools will have to be slightly modified. a 17 mm open-end wrench and a 24 mm socket. The key thickness is grinded down to 4 mm. 4 protrusions are machined on the head, falling into the holes of the lock nut.

After preparation, the key is placed in the space under the disc, and the head is put on the flange of the angle grinder and rotated in the direction opposite to the rotation of the wheel. After that, it can be easily removed and replaced.

Replacing a disk in normal mode

Regularly working with an angle grinder, you need to constantly change the wheels, which are consumables. If the tool is already inconvenient to work, then the worn out abrasive wheel should be replaced.

Important! Be sure to check the disconnection from the mains to avoid personal injury.

How to remove a disc from an angle grinder: in normal mode and after jamming

Working with any mechanisms, one should always expect emergency situations, which cannot always be solved in accordance with the recommendations of the manufacturers. The angle grinder is no exception. Excessive clamping of the cutting disc may occur during operation. This problem occurs especially often with large, powerful models, with a power of more than 2 kW. What to do if the disc is bitten on an angle grinder or the nut does not unscrew.We will deal with this issue further.

Solution to the problem

If the nut does not lend itself to the standard way of unscrewing (using a special wrench), you can resort to the following methods:

  • Use a pipe wrench instead of a special angle grinder.
  • I put the angle grinder on my “back” and put a standard wrench, hitting it hard with a hammer. Attention! During this operation, it is not recommended to press the locking button, and to prevent the spindle from rotating, it is necessary to hold the disk with your hand.
  • Similarly to the previous method, only a barb or center punch must be placed in the holes for the spikes of the key. Attention! On the locking button Do not press, but hold it around by hand.
  • Similar to the previous two methods, but the blows must be applied with a perforator without a rotation mode. Attention! The release button. do not press, but hold the disc with your hand.

If these gentle methods did not lead to success, you can resort to drastic methods:

    Completely break the cutting disc with pliers. Grind the rest of the circle down to the nut itself. While the machine is in operation, grind off the remnants of the cutting disc with a metal plate that is thinner than the disc and can freely pass into the gap between the cork nut and the thrust washer.

After the circle has ground to the center ring, the lock nut will be unscrewed in the standard way. Attention! This method requires great care. Also, this method is not suitable for wheels that are NOT erased (diamond, grinding, brush, etc.).

  • To increase the size of the clamping nut by thermal expansion, using: an electric arc, a gas torch, a blowtorch, a blow dryer, and alcohol ignited in key holes. After heating, the nut is easily unscrewed in a standard way.
  • As you can see, before permanently cutting off the stuck nut with another angle grinder, you can try to remove the disc using less traumatic tools.

    The essence of the problem

    There is no problem with idle rotation of the cutting wheel, especially if the wheel is light and the tool has a soft start function.

    After a set of revolutions at the moment when the cutting wheel comes into contact with the surface being processed, the following chain of instant actions occurs:

    • The disc, meeting enormous resistance of the material being processed, loses speed, that is, it slows down.
    • The rotor of the engine for the first moments continues to rotate by inertia at the same speed and pulls the gears of the reducer, which carry the spindle along.
    • The thread of the spindle head is screwed more strongly into the lock nut, which is pressed into the cutting wheel.

    That’s it, an abnormal situation has appeared (excessive tightening of the corkscrew nut), which is caused by the following factors:

    • Large diameter cutting discs.
    • High power electric motor.
    • The massiveness of the rotor.
    • Large depth of cut (working load).

    Unscrew the nut securing the cutting disc, it is now hard.

    How to remove a disc from an angle grinder

    Any work, especially with mechanisms, often leads to emergency situations, the solution of which is not provided by the manufacturer. But ingenuity, sleight of hand, resourcefulness and knowledge of basic physics will help you cope with most difficult cases.

    The angle grinder loves to surprise with over-clamping the cut-off wheel. An angle grinder with powerful motors (the power consumption of which exceeds 2000 W) is especially tried in this matter.

    How to play it safe

    If the problem of excessive self-tightening of the nut has already occurred, then the repetition of this situation can be prevented in three ways, which have different degrees of effectiveness:

    • Install the cutting disc “face” (picture) to the gearbox.
    • Place a thick washer made of paper, cardboard, linoleum, plastic, etc. under the clamping nut.
    • You will not use a standard nut to mount the disc, but purchased or manufactured separately. It is a set of a hex nut and a non-removable, freely rotating washer of a larger diameter. Unscrew it in all cases much easier than the one that comes with the angle grinder.

    You can also apply several THESE methods at the same time.

    Owners of low-power (up to 1800 W) and light angle grinders need not worry. This problem does not threaten them.

    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.
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    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.

    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?

    What to do if the disc is jammed (bitten) on the angle grinder?

    Everyone who has experience of intensive work with an angle grinder has probably at least once encountered such a situation.

    This usually happens if the disc is pinching between parts, it stops or breaks, and the angle grinder motor continues to rotate and thus permanently tightens the nut.

    So what can you do if you bit a disc on an angle grinder?

    Each master has his own secrets. Especially for you, we learned a few of them and now we will share the most common ways to get out of the situation.

    Remove disc from angle grinder

    This method is used in extreme cases.

    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.

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

    News. 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 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.