The Nut On The Grinder Tightened How To Unscrew

In which direction the nut on the grinder is unscrewed In which direction the nut on the grinder is unscrewed with the angle grinder, or as it is called more popularly and in the folk way, the grinder, in our time an irreplaceable and very useful tool. Without it, neither here nor there!

Bulgarian Not Gaining Momentum Reason

As everyone knows, nothing is eternal, but sometimes the tools of brand manufacturers break, we are not talking about the so-called “consumer goods”. Not Bulgarian (). Are no exception. By the way, they began to call angle grinders a grinder during the period of the Union, since then this tool was produced in Bulgaria not from where the first models were supplied. The grinder, as a tool, has become very widespread []

Related posts How to make sure that you do not bite the nut and disc on the grinder

And a few words about preventing such unpleasant precedents again. You can use small cardboard spacers by inserting them between the disc and the nut. As a last resort, we use a disc with a smaller diameter, unless of course the nut is tightened from above. As a result, it will be possible to unscrew such a nut without any problems. It will not be clamped, it will have a bite on the thread.

The Nut On The Grinder Tightened How To Unscrew

And a little more on the topic, about a problem that I have learned from my own experience.

LBM, or grinder, is a universal tool with which you can perform a wide range of actions. It has a simple mechanism of action based on the rotation of the shaft by an electric motor. Essential for cutting metal parts, polishing surfaces and sanding various materials. One of the common problems during the operation of the grinder is biting the nut that holds the disc. This does not allow replacing the nozzle, and strong impact can damage its threads, break a key or break the body.

The secret to unscrewing the disc easily Bulgarian. [Life Situations]

This roller, It can be seen, as well as with what, correctly clamp on Bulgarian. This feature will help you get rid of.

The disc rotates clockwise.

))))))))))))))) Really? Clockwise. Nut, and the disc should rotate towards.

If you specifically bite, you can unscrew it with an adjustable wrench.

Read the same

How to unscrew the grinder disk nut (angle grinder) if it is bitten

So, if there is no way with the key, even if you insert it and hit it lightly with a hammer, then we begin to use something more serious.

The first thing you can try, but again without fanaticism, is to take a rod, insert it into the holes on the nut and, using a hammer, move the nut in the direction of its untwisting. The main thing here is not to break the button and not to rip the holes, as here

The second thing that many advise is to warm the nut. We warm up the nut. As a result, it is a little, but physically still has to expand. Resizing may or may not help

The third method is the most effective, and oddly enough, one of the safest for the grinder itself.
We take and break off the edges of the disc along the nut.

Next, we use a thin metal plate or another disc (thinner), and perhaps a second grinder with a disc. In this case, the broken disc must be turned either with a plate or a disc. We try to sharpen the disc so as not to damage the nuts holding this disc, because they will still be useful to us. So we sharpen the whole broken circle until we grind it off and the nut is unscrewed.

If you will be using a second disc or metal plate, it is best to insert them in a vise to hold them. Since it is dangerous to hold such objects with your hands. This is the most effective method!

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How to unscrew a “stubborn” nut

Thread, bolt and nut is the most common way of connecting various parts of assemblies and mechanisms. Unlike welding, it assumes the possibility of disassembly, replacement of faulty parts with new ones and then a new assembly using all the same threaded connections. Everything is good, but there is one drawback, although the bolt and nut are tightly connected, but the place of their mating tends to rust quickly, since moisture can still get there.

And it can be very difficult to unscrew a rusted nut. Therefore, whenever possible, it is advisable to lubricate the threaded connection. But lubrication is not always acceptable. But to be honest, we often neglect lubrication and regular maintenance, which includes lubrication of threaded connections. As a result, we get what? That’s right: a nut that doesn’t want to budge along the thread when we want to unscrew it. And this is the most important thing to rip it from its place, then it will easily follow the thread.

How to proceed in this case?
Firstly, do not rush, but you need to choose a wrench corresponding to the size of the rusted nut. If you tried to unscrew the nut with a simple open-end wrench and nothing came of it, then you should try using a spanner wrench. He will embrace the “nut not from three faces, like an open-end, but from all six, and the chance of ripping off the edges of the nut is much less. If this does not help, you can try to get things off the ground using a special cap head.
Secondly, you can increase the force of impact on the stubborn nut. By lengthening the wrench with some suitable pipe, we get a powerful lever that will significantly increase the effect of the wrench on the nut. We know this from the physics course, the larger the lever, the more work can be done with the same application of force.
Secondly, if physics did not help and no keys did not cope with the task of unscrewing the nut, then chemistry should be called for help. You just have to try to destroy the corrosion layer that firmly soldered the bolt and nut. This can be done using special fluids that dissolve rust. To do this, you can use a special technical aerosol WD-40 or even just kerosene or gasoline (only fire safety measures must be observed). The place of the threaded connection must be moistened with these liquids and there is a pause (10-15 minutes). After that, the nut will be more obedient.
Thirdly, you can try another method (again, back to physics). We know that when heated, bodies expand. If you heat the nut with a soldering iron, plug it in and attach the tip to the nut, then unscrewing it will be quite simple.
Hard case. This is when the edges of the nut are torn off and not a single wrench can grab it. There are exits here too. If the nut is large, then you can try to clamp it with a gas wrench and move it from its place. But here you need to be careful, otherwise it is easy to rip off the bolt itself with such a powerful key instead of a stuck nut. If the nut is small, then it is better to use a hammer and a chisel: make a notch on the nut with a chisel and, resting it (better blunt) against this notch with light hammer blows while unscrewing the nut, try to move the nut from its place.

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If necessary, you can use a file to carve new edges on a smaller nut.
Well, if all else fails, then there is only one way out to saw this stubborn nut with a hacksaw for metal or cut it off with a grinder. As they say, there is no reception against scrap. No nut can resist here! But this is the most extreme method, especially since it can not always be used (for example, if the nut is located so that it is impossible to get close to it either with a hacksaw or a grinder.
And in order not to suffer then again with the nut, it is best to lubricate the threaded connection, then it will come off the bolt, “like clockwork.”
And what can you use to unscrew a tight or rusted screw? Read the article on impact screwdriver.

A jammed nut: how to unscrew a disc on a grinder?

The angle grinder is a multifunctional but capricious tool that does not tolerate haste and carelessness. Breakdowns and breakdowns are the result of careless handling or safety violations. And the most common problem when working with a grinder is jamming of the abrasive tool between the support flange and the clamping nut. How to unscrew the disc on the grinder without damaging the parts and the tool itself?

With a hammer drill in jackhammer mode

The hammer drill must be switched to non-rotating chiseling mode. A 6 mm drill must be placed on the end of the flange or rest against the edge of the hole. The task is to unscrew the nut, to move it from its place. After that, unscrew it with your hands or with a key. During work, you need to block the rotation of the spindle.

With a gas wrench

The shoulder when using the gas wrench increases, therefore, the moment of force also increases. It is easier to unscrew stuck joints with such a tool. But if you try too hard, you risk crushing the flange or breaking the spindle rotation lock.

With open-end wrench and socket

Grind the working surface of the 17 key to 4 mm in thickness. Grind 4 projections on the surface of the 24 mm socket so that they fit into the holes in the flange.

The open-end wrench must be placed under the disc. Put the socket head on the nut of the grinder and turn it with a ratchet in the direction of rotation of the circle.

Warming up

The clamping nut must be heated with a hot air gun or gas burner to make the metal more pliable. Then unscrew it with the universal wrench or by hand. But the risk of this method is that you can spoil plastic parts and gearbox elements.

Disk destruction

Before you unscrew the nut on the grinder, you will have to completely crumble the disc. If it is already destroyed, you can break it with your hands. Solid circles can be sawn with a hacksaw or a metal blade. The inner metal ring and pieces that do not lend themselves to mechanical stress should remain from the abrasive wheel. Then you need to clamp a metal profile or any unnecessary plate in a vice, the thickness of which is less than or equal to the thickness of the disc (but not more). Then turn on the grinder and grind off the remaining abrasive to the seat sleeve. After that, the flange can be easily unscrewed with a universal key for angle grinders.

You can take care in advance that the tool does not jam in the grinder:

  • Cut washers out of cardboard or plastic and place one under the disc and the other between the disc and the flange. Even if the circle gets stuck, the plastic washer will melt when heated;
  • The face of the abrasive tool, to which the marking label is affixed, must be in contact with the support flange, not the clamping nut. With this installation, the metal ring of the circle acts as a washer and protects against jamming;
  • Weld a standard hex nut onto the flange and unscrew it with a regular wrench;
  • If possible, the wrench for the angle grinder should only be used to unscrew the clamping nut. When installing a new tool, it is better to tighten it manually or at least control the tightening force.

Rules for safe work with angle grinders (grinder)

This article lists the main mistakes when working with angle grinders (grinders), as well as measures to eliminate them. We will tell you about the causes of dangerous situations associated with the use of this tool, as well as how to avoid them.

Even the seemingly most innocuous instrument, under certain circumstances, becomes dangerous not only to health, but also to life. In this regard, we will tell you about the most common cases of incorrect operation of the grinder, which can lead to injury.

The grinder, regardless of size, is considered the most dangerous tool for several reasons:
1. A relatively large open area of ​​the rotating element (disk).
2. Lack of a reliable anchor point.
3. Sharp discs (abrasive).
4. High rotational speed for small models and high power for large ones.

The number of injuries from it exceeds other factors several times (the closest competitor is winter ice). To work fully and safely with it, a certain skill is required, which is acquired during work.

Rule # 1. Skill Comes First

The danger of this tool is determined primarily by the principle of operation. Cutting occurs when the rotating disc contacts the workpiece. In this case, the point of contact is the only stationary support, since the tool itself is held by the operator on the weight. Under these conditions, even a slight misalignment can cause a sudden uncontrolled jerk.

How to play it safe.
If you have to work with a grinder for the first time, start with low-power models (disc diameter 115-125 mm). This will help you master the principle of distributing the loads of the included tool. Refuse work that seems dangerous to you.

Rule # 2. Attention to Disc

About 90% of accidents are caused by problems with an abrasive disc (or cut-off wheel), which serves as an activator and a cutter at the same time. Working with a defective abrasive disc is common.

This visible defect forms a jag which, when it comes into contact with metal at speed, will cause a sharp jerk. In this case, the operator will not have time to extinguish it due to the high rotation speed. In the best case, after a jerk, the disc will fail. In the worst case, the disc will either fly to pieces at a speed of up to 300 km / h (bullet speed), or the tool will simply be pulled out of the hands with minimal consequences.

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This defect may not be noticeable at first glance, but immediately felt when turned on it starts chattering. A broken disc can break even before contacting the workpiece. Often a break (of a thin disc of 1.51.8 mm) occurs during operation, when a grinder with a disc lies on the ground and is accidentally stepped on. If this happened to you or in front of your eyes, inform the operator (since he can be sure that everything is in order with the disk).

How to play it safe.
Only a check before installation and control literally before each launch will give a guarantee of reliability (factory defects are rare). If a team is working, the operator of the grinder works only with it and monitors his tool. Discs from a reliable manufacturer (LugaAbrasiv, BOSH, Kronomax) have greater tear resistance than cheap counterparts.

Rule number 3. Each operation has its own disk

A huge number of cutting and grinding wheels are produced at dozens of large and small factories for literally every task. The habitual desire to save money and the desire to do everything with one disk can lead to a hospital bed.

Disk misuse:

Cut by weight or by weight of a workpiece or a loaded structure.
One of the most dangerous cases. The metal is quite strong and does not deform up to 8085% of the cut. Then a sharp movement can occur when the element tends to separate under its own weight. At this point, as a rule, the disc clamps, and the operator requires a lot of composure, strength and dexterity to hold the tool in his hands. Especially if it is work at a height. It is performed by the most experienced workers who are able to measure the distribution of loads in the structure by eye.

How to play it safe.
Seven times measure cut once. Check the strength of the base, support. Figure out in advance where the instrument can lead. Not saving time on preparing the workplace is about health and life. Try to position the workpiece so that the smaller (short) part is suspended.

Rule number 5. Control before and after surgery

There are points not directly related to cutting or grinding that you need to pay attention to:
1. Installing the disc. The tool shaft has a thread for a mounting nut. The desire to fix the disc more reliably sometimes suggests tightening it with a special wrench from the kit. This wrench is for loosening the nut. A tightly tightened nut is hard to unscrew, the key breaks off, knocking your hands. For normal fixation, it is enough to pull it up by hand along with the disc.
2. Turning on the instrument. Before starting, the disc must not come into contact with anything (except the shaft). Otherwise, an uncontrolled jerk is possible. Do not drive the blade into the cut before engaging.
3. Idling. Changing positions, walking and communicating with colleagues with a working tool in their hands is a direct path to injury. Turn it off after every operation.
4. Completion of the operation. After cutting or sanding, stop the blade on the wood. Do not put a grinder with a rotating disc.

We remove the cutting disc in a non-standard way

LBM is the most dangerous power tool

The discs on the grinder are fixed with a nut, which is twisted in the same direction in which the spindle of the power tool rotates. And when the rotation stops abruptly, the locking nut self-tightens.

In order to unscrew it later, you need an effort that significantly exceeds that that arose with a wedge, and it is simply impossible to do this with a native or gas wrench.

There is not enough strength to unscrew the nut, and the key will come off

You need to act differently namely, remove the cutting disc from under the nut, and then nothing will interfere with the unscrewing of the latter.

Step # 3

Unscrew and remove unnecessary remains of the consumable

The obstacle has been removed, now you can unscrew the nut and remove what is left of the cutting disc. The nut can be unscrewed easily, in most cases this can be done by hand, without the use of tools.

Preventive measures

A cardboard washer will allow you to unscrew the nut after any emergency situations

This method is simple and convenient, but still it is more convenient not to break anything, but simply unscrew it. In addition, there are times when the discs are simply clamped hard. It takes a long time to break a cleaning abrasive with a thickness of 5 mm, and then grind it under the nut, because there is a method to avoid the situation when it will be impossible to unscrew the nut with a wrench.

To do this, you only need to make a spacer washer from cardboard.

Cheap and cheerful

The tool is ready for use.

Break not build

We break the remains of the cutting disc with pliers. We remove as much as possible.

How to unscrew a nut on a grinder without a key: a simple life hack

Remove all abrasive

For the next step, you will need a metal plate that is less thick than the disc. We turn on the grinder, and with this plate we grind off the remnants of the abrasive, which is located under the fixing nut. Don’t forget about safety precautions.

What are the ways to unscrew the tightened nut on the grinder?

LBM, or grinder, is a universal tool with which you can perform a wide range of actions. It has a simple mechanism of action based on the rotation of the shaft by an electric motor. Essential for cutting metal parts, polishing surfaces and sanding various materials. One of the common problems during the operation of the grinder is biting the nut that holds the disc. This does not allow replacing the nozzle, and strong impact can damage its threads, break a key or break the body.

  1. Reasons for biting
  2. How to unscrew if it is delayed?
  3. How to avoid snacking?
  4. Conclusions

How to avoid snacking?

To avoid trouble when changing the grinder nozzle, it is recommended to prepare in advance for work. To do this, you can insert a small spacer between the disc and the nut. Suitable material is cardboard, a piece of linoleum or plastic.

If the fastener is constantly tightening too tightly, it is advisable to use a circle with a smaller diameter. It is also important to monitor the cleanliness of the tool, timely treat the thread with oil, WD-40.

Reasons for biting

As a rule, such a problem occurs on angle grinders with a working surface diameter in the range of 150-180 mm. When a strong torque occurs, the disc bites. This leads to the fact that the attachment cannot be removed with a conventional wrench, even with the application of serious physical effort.

The second common reason is the use of a grinder disc that does not correspond to the factory parameters of the tool. This leads to a disruption in the operation of the entire mechanism and jamming. In rare cases, the nut does not lend itself to loosening when rust appears on its threads. This most often occurs during long-term use of the instrument or storage without changing the tip.

How to unscrew if it is delayed?

Remember! Unscrew in the direction of rotation of the disc. Those. If the disc rotates clockwise, then you need to unscrew the nut clockwise.

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The easiest way to unscrew the disc mount is to place the wrench and then hit it several times with a moderate hammer.

If that doesn’t work, there are alternative methods for solving the problem:

  • Warm up the fastening mechanism with a torch, which will lead to the expansion of the metal. As a result, the structure will become mobile;
  • Use a small metal plate to grind the disc down to the nut itself. Continue grinding until its surface touches the nut and begins to twist it;
  • Insert the steel pipe into the holes of the nut, use it as a lever to unscrew the tightened nut. Do not apply too much force so as not to break the thread;
  • Lubricate the threads with machine oil such as WD-40. Wait 3-5 minutes and then try unscrewing the mount with a wrench. Using this method, you can get rid of rust inside the landing shaft;
  • If you need to remove a circle that has not been used for a long time, you can start tightening the fasteners even more. After that, try again to weaken it;
  • Boiled or rusted threads on angle grinders can be treated with turpentine, vinegar, white spirit or rust remover. After processing, you need to wait at least 30 minutes, and then try again to unscrew the nut.

If a situation arises when you are left without a key, you can cut down the stuck mount with a chisel or grind it off with a second grinder with a disc for working on metal. After that, you will have to restore the thread, as well as look for a spare nut. If the circle still does not lend itself, you can try to combine different methods. For example, treat the shaft with machine oil, and then start unscrewing the nozzle using a lever or knocking the mechanism with a hammer.


LBM is a simple and useful tool for home or professional use. The most common problem while working with it is biting the nut that holds the disc. This can be dealt with by mechanical action on the mechanism (blows to the mount, using a lever and grinding the disc), and chemical treatment of threads with oil or rust solvent.

A simple way to unscrew the nut of the grinder angle grinder

To unscrew the nut, the first thing to do is to break the remnants of the broken cutting disc at the root.

This can be done very simply with pliers. Do not forget about protective equipment: glasses and gloves, as various small splinters fly.

In the end, there should be this:

Now we need to find a piece of metal that will be thinner in thickness than the grinder’s disc.

We turn on the angle grinder and with this piece we grind off the remains of the disk between the nuts.

After everything has grinded off inside, the nut is unscrewed not only with a key, but even by hand.

Here is a very simple and very fast way. In addition, it is safe for the grinder’s bearings, since if the nut does not unscrew, most people immediately take a hammer in their hand and start trying to unscrew the nut by tapping.

An easy way to unscrew the grinder nut with your own hands

Quite a common problem for those who use a grinder angle grinder, the cutting disc has broken and the clamping nut is tightly clamped. And the most interesting thing is that sometimes it is almost impossible to unscrew the nut either with a special angle grinder, or with a gas one, or something else. And if it is possible to do this, then it takes enormous efforts and wasted time. I will show you an easy way to save your time and effort to unscrew this grinder nut without unnecessary difficulties.

What to do to prevent this from happening again?

In order not to get into this situation anymore, you can put a plastic, paper or cardboard washer under the nut before clamping a new disc. And in such a case, the nut can always be unscrewed without problems.

Cut stones or discs are now not always of the proper quality and therefore breaking them becomes a frequent problem. Of course, the human factor of misuse is not excluded. But now, if you find yourself in a similar story, you know what to do. Until next time!

An easy way to unscrew the grinder nut

The situation when, when using a grinder (angle grinder), the cutting disc breaks and the clamping nut is clamped strongly, is not uncommon. This usually happens due to improper operation of the mechanism; the reason may also be a poor quality disc.

At the same time, the clamping force of the nut is such that it does not lend itself to either a special angle grinder or a gas key, no matter how large it is. If one manages to cope with the problem with these tools, then a lot of time and a lot of effort are put in.

But there are ways that simplify the process of unscrewing the nut, which does not require significant effort and time. About one of them further.

Beginning with destruction, breaking whatever remains from the broken disc to the edges of the clamping nut. Do this with pliers, not forgetting about the precautions you need to wear glasses, gloves to protect your hands and eyes from small fragments.

Next, they are looking for a metal plate, which should be thinner than the disc clamped on the grinder. Turn on the device and begin to grind the plate with the remnants of a disk clamped between the nuts. When nothing remains of the disc, the clamping nut is turned off even by hand.

The method is simple, it allows you to quickly solve the problem. It is safe for the device, since it does not overload the bearings, as is the case when solving a problem with a wrench and a hammer.

But in order not to encounter the described situation at all, it is necessary to take measures in advance to exclude its strong clamping after the cutting disc breaks. They are very simple to place a washer made of paper, cardboard or plastic under the nut. Its presence eliminates the strong clamping of the nut, which is always easily unscrewed with any key.

In general, appreciating the described method well, many Internet users, having familiarized themselves with it, believe that it is better to try to unscrew the nut in the traditional way with a wrench. To increase the effort, they propose to increase the shoulder of application of forces, and to do everything after clamping the disk (what is left of it) in a vice. The latter excludes any impact on the bearings and other parts, grinder units, therefore fears of overloading them will be untenable.

They explain their position by the fact that the grinder has high power, therefore it is problematic to hold a metal plate in your hands. There is a great concern that hands could be seriously injured.

Some of those who have read are advised to purchase a special nut, for example, from Bosch, which eliminates such problems.